Commit Graph

4415 Commits

Author SHA1 Message Date
Stephane Eranian
3090ffb5a2 perf: Disable PERF_RECORD_MMAP2 support
For now, we disable the extended MMAP record support (MMAP2).

We have identified cases where it would not report the correct mapping
information, clone(VM_CLONE) but with separate pids.  We will revisit
the support once we find a solution for this case.

The patch changes the kernel to return EINVAL if attr->mmap2 is set. The
patch also modifies the perf tool to use regular PERF_RECORD_MMAP for
synthetic events and it also prevents the tool from requesting
attr->mmap2 mode because the kernel would reject it.

The support will be revisited once the kenrel interface is updated.

In V2, we reduce the patch to the strict minimum.

In V3, we avoid calling perf_event_open() with mmap2 set because we know
it will fail and require fallback retry.

Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20131017173215.GA8820@quad
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-17 16:27:14 -03:00
Arnaldo Carvalho de Melo
3b16ff8967 perf scripting perl: Fix build error on Fedora 12
Cast __u64 to u64 to silence this warning on older distros, such as
Fedora 12:

    CC       /tmp/build/perf/util/scripting-engines/trace-event-perl.o
  cc1: warnings being treated as errors
  util/scripting-engines/trace-event-perl.c: In function ‘perl_process_tracepoint’:
  util/scripting-engines/trace-event-perl.c:285: error: format ‘%lu’ expects type ‘long unsigned int’, but argument 2 has type ‘__u64’
  make[1]: *** [/tmp/build/perf/util/scripting-engines/trace-event-perl.o] Error 1
  make: *** [install] Error 2
  make: Leaving directory `/home/acme/git/linux/tools/perf'
  [acme@fedora12 linux]$

Reported-by: Waiman Long <Waiman.Long@hp.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tom.zanussi@linux.intel.com>
Cc: Waiman Long <Waiman.Long@hp.com>
Link: http://lkml.kernel.org/n/tip-nlxofdqcdjfm0w9o6bgq4kqv@git.kernel.org
Link: http://lkml.kernel.org/r/1381265120-58532-1-git-send-email-Waiman.Long@hp.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-17 16:24:26 -03:00
Arnaldo Carvalho de Melo
6ef068cb8e perf evlist: Introduce perf_evlist__strerror_tp method
Out of 'perf trace', should be used by other tools that uses
tracepoints.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ramkumar Ramachandra <artagnon@gmail.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-lyvtxhchz4ga8fwht15x8wou@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-17 14:35:20 -03:00
Felipe Pena
c88b05b2cd tools/testing/selftests: fix uninitialized variable
The err variable is intended to receive the timer_create() return before
checking it

Signed-off-by: Felipe Pena <felipensp@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-10-16 21:35:53 -07:00
Arnaldo Carvalho de Melo
ba209f8563 perf trace: Improve event processing exit
We need to differentiate SIGCHLD from SIGINT, the later should cause as
immediate as possible exit, while the former should wait to process the
events that may be perceived in the ring buffer after the SIGCHLD is
handled.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-vf6n57ewm3mjy2sz6r491hus@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-16 16:12:24 -03:00
Arnaldo Carvalho de Melo
c522739d72 perf trace: Use vfs_getname hook if available
Initially it tries to find a probe:vfs_getname that should be setup
with:

 perf probe 'vfs_getname=getname_flags:65 pathname=result->name:string'

or with slight changes to cope with code flux in the getname_flags code.

In the future, if a "vfs:getname" tracepoint becomes available, then it
will be preferred.

This is not strictly required and more expensive method of reading the
/proc/pid/fd/ symlink will be used when the fd->path array entry is not
populated by a previous vfs_getname + open syscall ret sequence.

As with any other 'perf probe' probe the setup must be done just once
and the probe will be left inactive, waiting for users, be it 'perf
trace' of any other tool.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-ujg8se8glq5izmu8cdkq15po@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-16 11:18:24 -03:00
Arnaldo Carvalho de Melo
97119f37bb perf trace: Split fd -> pathname array handling
So that the part that grows the array as needed is untied from the code
that reads the /proc/pid/fd symlink and can be used for the vfs_getname
hook that will set the fd -> path translation too, when available.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-ydo5rumyv9hdc1vsfmqamugs@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-16 11:05:01 -03:00
Masami Hiramatsu
1b286bdd5b perf probe: Fix to initialize fname always before use it
Fix perf probe --list to initialize fname local var always before
use it. This may cause a SEGV if there is a probe which is in
the function body but not in any inline function.

Problem introduced in:

	commit e08cfd4bda
	Author: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
	Date:   Mon Sep 30 18:21:44 2013 +0900

	    perf probe: Fix to find line information for probe list

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20131011122317.9662.29736.stgit@kbuild-fedora.novalocal
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-15 14:37:38 -03:00
Arnaldo Carvalho de Melo
6650b181cc perf scripting perl: Fix build error on Fedora 12
Cast __u64 to u64 to silence this warning on older distros, such as
Fedora 12:

    CC       /tmp/build/perf/util/scripting-engines/trace-event-perl.o
  cc1: warnings being treated as errors
  util/scripting-engines/trace-event-perl.c: In function ‘perl_process_tracepoint’:
  util/scripting-engines/trace-event-perl.c:285: error: format ‘%lu’ expects type ‘long unsigned int’, but argument 2 has type ‘__u64’
  make[1]: *** [/tmp/build/perf/util/scripting-engines/trace-event-perl.o] Error 1
  make: *** [install] Error 2
  make: Leaving directory `/home/acme/git/linux/tools/perf'
  [acme@fedora12 linux]$

Reported-by: Waiman Long <Waiman.Long@hp.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tom.zanussi@linux.intel.com>
Cc: Waiman Long <Waiman.Long@hp.com>
Link: http://lkml.kernel.org/n/tip-nlxofdqcdjfm0w9o6bgq4kqv@git.kernel.org
Link: http://lkml.kernel.org/r/1381265120-58532-1-git-send-email-Waiman.Long@hp.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-15 08:34:00 -03:00
Chenggang Qin
784f3390f9 perf symbols: Fix a mmap and munmap mismatched bug
In function filename__read_debuglink(), while the ELF file is opend and
mmapped in elf_begin(), but if this file is considered to not be usable
during the following code, we will goto the close(fd) directly. The
elf_end() is skipped.  So, the mmaped ELF file cannot be munmapped. The
mmapped areas exist during the life of perf.

This is a memory leak.  This patch fixed this bug.

Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Chenggang Qin <chenggang.qcg@taobao.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Chenggang Qin <chenggang.qcg@taobao.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Yanmin Zhang <yanmin.zhang@intel.com>
Link: http://lkml.kernel.org/r/1381451279-4109-1-git-send-email-chenggang.qin@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-14 12:21:23 -03:00
Chenggang Qin
d4f74eb891 perf symbols: Fix a memory leak due to symbol__delete not being used
In function symbols__fixup_duplicate(), while duplicated symbols are
found, only the rb_node is removed from the tree. The symbol structures
themself are ignored.  Then, these memory areas are lost.

Signed-off-by: Chenggang Qin <chenggang.qcg@taobao.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Yanmin Zhang <yanmin.zhang@intel.com>
Link: http://lkml.kernel.org/r/1381451279-4109-3-git-send-email-chenggang.qin@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-14 12:21:20 -03:00
Adrian Hunter
1d5077bdd9 perf annotate: Another fix for annotate_browser__callq()
The target address is provided by objdump and is not necessary a memory
address.  Add a helper to get the correct address.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1381747424-3557-8-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-14 12:21:18 -03:00
Adrian Hunter
fc1b691d76 perf buildid-cache: Add ability to add kcore to the cache
kcore can be used to view the running kernel object code.  However,
kcore changes as modules are loaded and unloaded, and when the kernel
decides to modify its own code.  Consequently it is useful to create a
copy of kcore at a particular time.  Unlike vmlinux, kcore is not unique
for a given build-id.  And in addition, the kallsyms and modules files
are also needed.  The tool therefore creates a directory:

	~/.debug/[kernel.kcore]/<build-id>/<YYYYmmddHHMMSShh>

which contains: kcore, kallsyms and modules.

Note that the copied kcore contains only code sections.  See the
kcore_copy() function for how that is determined.

The tool will not make additional copies of kcore if there is already
one with the same modules at the same addresses.

Currently, perf tools will not look for kcore in the cache.  That is
addressed in another patch.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/525BF849.5030405@intel.com
[ renamed 'index' to 'idx' to avoid shadowing string.h symbol in f12,
  use at least one member initializer when initializing a struct to
  zeros, also to fix the build on f12 ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-14 12:20:38 -03:00
Adrian Hunter
1179e11bbb perf annotate: Fix annotate_browser__callq()
When following a call, annotate_browser__callq() uses the current
symbol's map to look up the target ip.  That will not work if the target
ip is on a map with a different mapping (i.e.  start - pgoff is
different).

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1381747424-3557-3-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-14 10:29:27 -03:00
Adrian Hunter
0544d4225c perf symbols: Add ability to find kcore in build-id cache
When no vmlinux is found, tools will use kallsyms and, if possible,
kcore.  Add the ability to find kcore in the build-id cache.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1381747424-3557-7-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-14 10:29:25 -03:00
Adrian Hunter
9a17d7268d perf tools: Add copyfile_mode()
Add a function to copy a file specifying the permissions to use for the
created file.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1381747424-3557-5-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-14 10:29:23 -03:00
Adrian Hunter
6e427ab02c perf annotate: Find kcore symbols on other maps
Use the new map_groups__find_ams() method to find kcore symbols on other
maps.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1381747424-3557-4-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-14 10:29:20 -03:00
Ingo Molnar
231486a522 tools/perf/build: Simplify the autodep inclusion rule
Namhyung Kim noticed that the autodep .d file inclusion rule was
unnecessarily complicated:

  > > +-include *.d */*.d
  >
  > Hmm.. this */*.d part is really needed?

Only include *.d files.

Reported-by: Namhyung Kim <namhyung@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-14 10:29:18 -03:00
Ingo Molnar
046fa7ae20 tools/perf/build: Improve the 'stackprotector' feature test
Namhyung Kim noticed that the stackprotector testcase was incomplete:

  > The flag being checked should be -"W"stack-protector instead of
  > -"f"stack-protector.  And the gcc manpage says that -Wstack-protector is
  > only active when -fstack-protector is active.  So the end result should
  > look like
  >
  >         $(BUILD) -Werror -fstack-protector -Wstack-protector

Add -Wstack-protector.

Reported-by: Namhyung Kim <namhyung@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-14 10:29:15 -03:00
Ingo Molnar
01287e2cb7 tools/perf/build: Remove the volatile-register-var feature check
Namhyung Kim noticed that the volatile-register-var feature check
is superfluous:

 > The gcc manpage says this warning is enabled by -Wall, and we add -Wall
 > to CFLAGS before doing feature checks.  So all gcc versions that support
 > -Wvolatile-register-var enables it by default without this check and
 > older gcc versions will always fail the feature check.

Remove it - this will further speed up feature checks.

Reported-by: Namhyung Kim <namhyung@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-14 10:29:13 -03:00
Ingo Molnar
5f36978ca5 tools/perf/build: Simplify the libelf logic
Ulrich Drepper and Namhyung Kim reported that the libelf logic in
config/Makefile is duplicated in part.

Remove the duplication, and also remove the now unused FLAGS_LIBELF
variable.

Reported-by: Ulrich Drepper <drepper@gmail.com>
Reported-by: Namhyung Kim <namhyung@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-14 10:29:11 -03:00
Ingo Molnar
0dc0974219 tools/perf/build: Fix DPACKAGE definitions for the libbfd et al testcases
Namhyung Kim reported these duplicate DPACKAGE definitions:

  test-libbfd:
       $(BUILD) -DPACKAGE='perf' -DPACKAGE=perf -lbfd -ldl

Fix all affected places and use Namhyung's suggestion that the
definition should look like a normal C string: -DPACKAGE='"perf"'.

Reported-by: Namhyung Kim <namhyung@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-14 10:29:09 -03:00
Ingo Molnar
fcf9258501 tools/perf/build: Pass through DEBUG parameter
Arnaldo reported that 'make DEBUG=1' does not work anymore.

The reason is that 'Makefile' only passes it through to
'Makefile.perf' via the environment, but 'Makefile.perf'
checks that it's a command line option:

    ifeq ("$(origin DEBUG)", "command line")
      PERF_DEBUG = $(DEBUG)
    endif

So pass it through properly, and also clean up DEBUG parameter
handling while at it and fix a couple of annoyances:

 - DEBUG=0 used to be interpreted as 'debugging on'. Turn it
   into 'debugging off' instead.

 - Same was the case for 'DEBUG=' - turn that into debug-off
   as well.

 - Pass in just a clean, sanitized 'DEBUG' value and get rid of
   the intermediate, unnecessary PERF_DEBUG variable.

Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-14 10:29:07 -03:00
Ingo Molnar
3fb66335e1 tools/perf/build: Fix non-existent build directory handling
Arnaldo reported that non-existent build directories were not
recognized  properly. The reason is readlink failure causing 'O'
to become empty.

Solve it by passing through the 'O' variable unmodified if
readlink fails.

Reported-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/20131009150023.GA10167@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-14 10:29:05 -03:00
Arnaldo Carvalho de Melo
4e98771274 perf symbols: Add map_groups__find_ams()
Add a function to find a symbol using an ip that might be on a different
map.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1381747424-3557-2-git-send-email-adrian.hunter@intel.com
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-14 10:29:02 -03:00
Adrian Hunter
afba19d9dc perf symbols: Workaround objdump difficulties with kcore
The objdump tool fails to annotate module symbols when looking at kcore.

Workaround this by extracting object code from kcore and putting it in a
temporary file for objdump to use instead.

The temporary file is created to look like kcore but contains only the
function being disassembled.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1381320078-16497-3-git-send-email-adrian.hunter@intel.com
[ Renamed 'index' to 'idx' to avoid shadowing string.h's 'index' in Fedora 12,
  Replace local with variable length with malloc/free to fix build in Fedora 12 ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-14 10:29:00 -03:00
Adrian Hunter
52afdaf9f0 perf symbols: Validate kcore module addresses
Before using kcore we need to check that modules are in memory at the
same addresses that they were when data was recorded.

This is done because, while we could remap symbols to different
addresses, the object code linkages would still be different which would
provide an erroneous view of the object code.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1381320078-16497-2-git-send-email-adrian.hunter@intel.com
[ Rename basename to base_name to avoid shadowing libgen's basename in fedora 12 ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-14 10:28:58 -03:00
Jiri Olsa
3e6a147dee perf tools: Separate lbfd check out of NO_DEMANGLE condition
We fail build with NO_DEMANGLE with missing -lbfd externals error.
The reason is that we now use bfd code in srcline object:
  perf tools: Implement addr2line directly using libbfd

So we need to check/add -lbfd always now.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-14 10:28:56 -03:00
Felipe Pena
1df9297c85 perf tests: Fix memory leak in dso-data.c
Fix for a memory leak on test_file() function in dso-data.c.

Signed-off-by: Felipe Pena <felipensp@gmail.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1381370438-4209-1-git-send-email-felipensp@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-14 10:28:54 -03:00
David Ahern
a949fffb84 perf tools: Fix old GCC build error in 'get_srcline'
trace-event-parse.c:parse_proc_kallsyms()

    Old GCC (4.4.2) does not see through the code flow of get_srcline() and
gets confused about the status of 'file' and 'line':

    CC       /tmp/build/perf/util/srcline.o
  cc1: warnings being treated as errors
  util/srcline.c: In function ¿get_srcline¿:
  util/srcline.c:226: error: ¿file¿ may be used uninitialized in this function
  util/srcline.c:227: error: ¿line¿ may be used uninitialized in this function
  make[1]: *** [/tmp/build/perf/util/srcline.o] Error 1
  make: *** [install] Error 2
  make: Leaving directory `/home/acme/git/linux/tools/perf'
  [acme@fedora12 linux]$

Help out GCC by initializing 'file' and 'line'.

Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Link: http://lkml.kernel.org/n/tip-h8k7h49z3cndqgjdftkmm9f8@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-14 10:28:52 -03:00
David Ahern
bf2575c121 perf trace: Add summary option to dump syscall statistics
When enabled dumps a summary of all syscalls by task with the usual
statistics -- min, max, average and relative stddev. For example,

make - 26341 :       3344   [ 17.4% ]      0.000 ms

                read :   52    0.000     4.802     0.644   30.08
               write :   20    0.004     0.036     0.010   21.72
                open :   24    0.003     0.046     0.014   23.68
               close :   64    0.002     0.055     0.008   22.53
                stat : 2714    0.002     0.222     0.004    4.47
               fstat :   18    0.001     0.041     0.006   46.26
                mmap :   30    0.003     0.009     0.006    5.71
            mprotect :    8    0.006     0.039     0.016   32.16
              munmap :   12    0.007     0.077     0.020   38.25
                 brk :   48    0.002     0.014     0.004   10.18
        rt_sigaction :   18    0.002     0.002     0.002    2.11
      rt_sigprocmask :   60    0.002     0.128     0.010   32.88
              access :    2    0.006     0.006     0.006    0.00
                pipe :   12    0.004     0.048     0.013   35.98
               vfork :   34    0.448     0.980     0.692    3.04
              execve :   20    0.000     0.387     0.046   56.66
               wait4 :   34    0.017  9923.287   593.221   68.45
               fcntl :    8    0.001     0.041     0.013   48.79
            getdents :   48    0.002     0.079     0.013   19.62
              getcwd :    2    0.005     0.005     0.005    0.00
               chdir :    2    0.070     0.070     0.070    0.00
           getrlimit :    2    0.045     0.045     0.045    0.00
          arch_prctl :    2    0.002     0.002     0.002    0.00
           setrlimit :    2    0.002     0.002     0.002    0.00
              openat :   94    0.003     0.005     0.003    2.11

Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1381289214-24885-3-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-14 10:28:50 -03:00
David Ahern
813335b8b2 perf util: Add findnew method to intlist
Similar to other findnew based methods if the requested object is not
found, add it to the list.

v2: followed format of other findnew methods per acme's request

Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1381289214-24885-2-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-14 10:28:48 -03:00
Ramkumar Ramachandra
87f918685a perf trace: Improve the error messages
Currently, execution of 'perf trace' reports the following cryptic
message to the user:

$ perf trace
Couldn't read the raw_syscalls tracepoints information!

Typically this happens because the user does not have permissions to
read the debugfs filesystem. Also handle the case when the kernel was
not compiled with debugfs support or when it isn't mounted.

Now, the tool prints detailed error messages:

$ perf trace
Error:	Unable to find debugfs
Hint:	Was your kernel was compiled with debugfs support?
Hint:	Is the debugfs filesystem mounted?
Hint:	Try 'sudo mount -t debugfs nodev /sys/kernel/debug'

$ perf trace
Error:	No permissions to read /sys/kernel/debug//tracing/events/raw_syscalls
Hint:	Try 'sudo mount -o remount,mode=755 /sys/kernel/debug/'

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Link: http://lkml.kernel.org/r/1380863851-14460-1-git-send-email-artagnon@gmail.com
[ Added ready to use commands to fix the issues as extra hints, use the
  current debugfs mount point when reporting permission error, use
  strerror_r instead of the deprecated sys_errlist, as reported by David Ahern ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-14 10:24:04 -03:00
Ramkumar Ramachandra
d366c53e1d perf timechart: Add example in the documentation
While at it, update the synopsis to show both forms.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung@gmail.com>
Link: http://lkml.kernel.org/r/1380791716-10325-1-git-send-email-artagnon@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-11 12:18:13 -03:00
Ingo Molnar
8a5411e9a3 perf tools: Implement summary output for 'make install'
'make install' used to show all the install lines, which is way too
verbose to be really informative to the user.

Implement summary output instead:

  comet:~/tip/tools/perf> make install
    BUILD:   Doing 'make -j12' parallel build
    SUBDIR   Documentation
    INSTALL  Documentation-man
    INSTALL  binaries
    INSTALL  libexec
    INSTALL  perf-archive
    INSTALL  perl-scripts
    INSTALL  python-scripts
    INSTALL  bash_completion-script
    INSTALL  tests

'make install V=1' will still show the old, detailed output.

Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: http://lkml.kernel.org/r/1381312169-17354-5-git-send-email-mingo@kernel.org
[ Fixed conflict with libperf-gtk patches in acme/perf/core, cope with 'trace' alias ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-11 12:18:11 -03:00
Ingo Molnar
3fae82db55 perf tools: Align perf version output to other build messages
Before:

  CC util/pmu.o
  CC util/parse-events.o
PERF_VERSION = 3.12.rc4.g1b30c
  CC util/parse-events-flex.o
  GEN perf-archive

After:

  CC util/pmu.o
  CC util/parse-events.o
  PERF_VERSION = 3.12.rc4.g1b30c
  CC util/parse-events-flex.o
  GEN perf-archive

Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1381312169-17354-4-git-send-email-mingo@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-11 12:18:10 -03:00
Ingo Molnar
65fb09922d tools: Harmonize the various build messages in perf, lib-traceevent, lib-lk
The various build lines from libtraceevent and perf mix up during a
parallel build and produce unaligned output like:

    CC builtin-buildid-list.o
    CC builtin-buildid-cache.o
    CC builtin-list.o
  CC FPIC            trace-seq.o
    CC builtin-record.o
  CC FPIC            parse-filter.o
    CC builtin-report.o
    CC builtin-stat.o
  CC FPIC            parse-utils.o
  CC FPIC            kbuffer-parse.o
    CC builtin-timechart.o
    CC builtin-top.o
    CC builtin-script.o
  BUILD STATIC LIB   libtraceevent.a
    CC builtin-probe.o
    CC builtin-kmem.o
    CC builtin-lock.o

To solve this, harmonize all the build message alignments to be similar
to the kernel's kbuild output: prefixed by two spaces and 11-char wide.

After the patch the output looks pretty tidy, even if output lines get
mixed up:

  CC      builtin-annotate.o
  FLAGS:  * new build flags or cross compiler
  CC      builtin-bench.o
  AR      liblk.a
  CC      bench/sched-messaging.o
  CC FPIC event-parse.o
  CC      bench/sched-pipe.o
  CC FPIC trace-seq.o
  CC      bench/mem-memcpy.o
  CC      bench/mem-memset.o
  CC FPIC parse-filter.o
  CC      builtin-diff.o
  CC      builtin-evlist.o
  CC      builtin-help.o

Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1381312169-17354-3-git-send-email-mingo@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-11 12:18:08 -03:00
Ingo Molnar
8ec19c0eba perf tools: Implement summary output for 'make clean'
'make clean' used to show all the rm lines, which isn't really
informative in any way and spams the console.

Implement summary output:

  comet:~/tip/tools/perf> make clean
   CLEAN libtraceevent
   CLEAN liblk
   CLEAN config
   CLEAN core-objs
   CLEAN core-progs
   CLEAN core-gen
   CLEAN Documentation
   CLEAN python

'make clean V=1' will still show the old, detailed output.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1381312169-17354-2-git-send-email-mingo@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-11 12:18:06 -03:00
Ingo Molnar
cee972c0e6 perf tools: Fix redirection printouts
Fix the duplicate util/util printout Arnaldo reported:

       $ make V=1 O=/tmp/build/perf -C tools/perf/ util/srcline.o
   ...
       # Redirected target util/srcline.o =>     /tmp/build/perf/util/util/srcline.o

Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20131010054256.GA23716@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-11 12:18:04 -03:00
Arnaldo Carvalho de Melo
78645cf3ed perf trace: Initial beautifier for ioctl's 'cmd' arg
[root@zoo linux]# trace -e ioctl | grep -v "cmd: 0x" | head -10
      0.386 ( 0.001 ms): trace/1602 ioctl(fd: 1<pipe:[127057]>, cmd: TCGETS, arg: 0x7fff59fcb4d0          ) = -1 ENOTTY Inappropriate ioctl for device
   1459.368 ( 0.002 ms): inotify_reader/10352 ioctl(fd: 18<anon_inode:inotify>, cmd: FIONREAD, arg: 0x7fb835228bcc  ) = 0
   1463.586 ( 0.002 ms): inotify_reader/10352 ioctl(fd: 18<anon_inode:inotify>, cmd: FIONREAD, arg: 0x7fb835228bcc  ) = 0
   1463.611 ( 0.002 ms): inotify_reader/10352 ioctl(fd: 18<anon_inode:inotify>, cmd: FIONREAD, arg: 0x7fb835228bcc  ) = 0
   3740.526 ( 0.002 ms): awk/1612 ioctl(fd: 1<pipe:[128265]>, cmd: TCGETS, arg: 0x7fff4d166b90          ) = -1 ENOTTY Inappropriate ioctl for device
   3740.704 ( 0.001 ms): awk/1612 ioctl(fd: 3</proc/meminfo>, cmd: TCGETS, arg: 0x7fff4d1669a0          ) = -1 ENOTTY Inappropriate ioctl for device
   3742.550 ( 0.002 ms): ps/1614 ioctl(fd: 1<pipe:[128266]>, cmd: TIOCGWINSZ, arg: 0x7fff591762b0      ) = -1 ENOTTY Inappropriate ioctl for device
   3742.555 ( 0.003 ms): ps/1614 ioctl(fd: 2<socket:[19550]>, cmd: TIOCGWINSZ, arg: 0x7fff591762b0     ) = -1 ENOTTY Inappropriate ioctl for device
   3742.558 ( 0.002 ms): ps/1614 ioctl(cmd: TIOCGWINSZ, arg: 0x7fff591762b0                            ) = -1 ENOTTY Inappropriate ioctl for device
   3742.572 ( 0.002 ms): ps/1614 ioctl(fd: 1<pipe:[128266]>, cmd: TCGETS, arg: 0x7fff59176220          ) = -1 ENOTTY Inappropriate ioctl for device
 [root@zoo linux]#

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-afajwap3mr60dfl4qpdl1pxn@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-11 12:18:02 -03:00
Arnaldo Carvalho de Melo
975b7c2f40 perf trace: Prepare the strarray scnprintf method for reuse
Right now when an index passed to that method has no string associated
it'll print the index as a decimal number, prepare it so that we can use
it to print it in hex as well, for ioctls, for instance.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-nsvy06sqj64qvnkmzvwxsx2v@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-11 12:18:00 -03:00
Arnaldo Carvalho de Melo
03e3adc9f4 perf trace: Allow specifying index offset in strarrays
So that the index passed doesn't have to start at zero, being
decremented from an offset specified when declaring the strarray before
being used as the real array index.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-k1ce6uqyt4qar9edrj3mevod@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-11 12:17:59 -03:00
Adrian Hunter
316d70d6db perf symbols: Make a separate function to parse /proc/modules
Make a separate function to parse /proc/modules so that it can be
reused.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1381221956-16699-2-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-11 12:17:57 -03:00
David Ahern
2969b12993 perf intlist: Add priv member
Allows commands to leverage intlist infrastructure for opaque
structures.

For example an upcoming perf-trace change will use this as a means of
tracking syscalls statistics by task.

Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1380395584-9025-6-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-11 12:17:55 -03:00
David Ahern
896cbb56bf perf trace: Use new machine method to loop over threads
Use the new machine method that loops over threads to dump summary data.

Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1380395584-9025-3-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-11 12:17:53 -03:00
David Ahern
35feee19f9 perf machine: Add method to loop over threads and invoke handler
Loop over all threads within a machine - including threads moved to the
dead threads list -- and invoked a function.

This allows commands to run some specific function on each thread (eg.,
dump statistics) yet hides how the threads are maintained within the
machine.

Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1380395584-9025-2-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-11 12:17:51 -03:00
David Ahern
5e2485b1a2 perf trace: Add record option
The record option is a convience alias to include the -e raw_syscalls:*
argument to perf-record. All other options are passed to perf-record's
handler. Resulting data file can be analyzed by perf-trace -i.

Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1380395584-9025-5-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-11 12:17:49 -03:00
David Ahern
8fb598e5a3 perf trace: Fix comm resolution when reading events from file
Task comm's are getting lost when processing events from a file. The
problem is that the trace struct used by the live processing has its
host machine and the perf-session used for file based processing has its
host machine.  Fix by having both references point to the same machine.

Before:

     0.030 ( 0.001 ms): :27743/27743 brk( ...
     0.057 ( 0.004 ms): :27743/27743 mmap(len: 4096, prot: READ|WRITE, flags: ...
     0.075 ( 0.006 ms): :27743/27743 access(filename: 0x7f3809fbce00, mode: R ...
     0.091 ( 0.005 ms): :27743/27743 open(filename: 0x7f3809fba14c, flags: CLOEXEC ...
...

After:
     0.030 ( 0.001 ms): make/27743 brk( ...
     0.057 ( 0.004 ms): make/27743 mmap(len: 4096, prot: READ|WRITE, flags: ...
     0.075 ( 0.006 ms): make/27743 access(filename: 0x7f3809fbce00, mode: R ...
     0.091 ( 0.005 ms): make/27743 open(filename: 0x7f3809fba14c, flags: CLOEXEC ...
...

Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1380395584-9025-4-git-send-email-dsahern@gmail.com
[ Moved creation of new host machine to a separate constructor: machine__new_host() ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-11 12:17:48 -03:00
David Ahern
4bbe5a61f2 perf stat: Add units to nanosec-based counters
Ingo pointed out that the task-clock counter should have the units
explicitly stated since it is not a counter.

Before:

perf stat -a -- sleep 1

 Performance counter stats for 'sleep 1':

      16186.874834 task-clock          #   16.154 CPUs utilized
...

After:

perf stat -a -- sleep 1

 Performance counter stats for 'system wide':

      16146.402138 task-clock (msec)   #   16.125 CPUs utilized
...

Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1380400080-9211-4-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-11 12:17:46 -03:00
David Ahern
ac3063bd47 perf stat: Don't require a workload when using system wide or CPU options
The "perf stat" command can do system wide counters or one or more cpus.
For these options do not require a workload to be specified.

v2: use perf_target__none per Namhyung's comment.

Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/52497F3C.9070908@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-11 12:17:44 -03:00
David Ahern
62d3b617c0 perf stat: Fix misleading message when specifying cpu list or system wide
The "perf stat" tool displays the command run in its summary output
which is misleading when using a cpu list or system wide collection.

Before:

perf stat -a -- sleep 1

 Performance counter stats for 'sleep 1':

16152.670249 task-clock                #   16.132 CPUs utilized
         417 context-switches          #    0.002 M/sec
           7 cpu-migrations            #    0.030 K/sec
...

After:

perf stat -a -- sleep 1

 Performance counter stats for 'system wide':

16206.931120 task-clock                #   16.144 CPUs utilized
         395 context-switches          #    0.002 M/sec
           5 cpu-migrations            #    0.030 K/sec
...

or

perf stat -C1 -- sleep 1

 Performance counter stats for 'CPU(s) 1':

   1001.669257 task-clock                #    1.000 CPUs utilized
         4,264 context-switches          #    0.004 M/sec
             3 cpu-migrations            #    0.003 K/sec
...

Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1380400080-9211-2-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-11 12:17:42 -03:00
Jiri Olsa
a65cb4b9f8 perf evlist: Fix perf_evlist__mmap_read event overflow
The perf_evlist__mmap_read used 'union perf_event' as a placeholder for
event crossing the mmap boundary.

This is ok for sample shorter than ~PATH_MAX. However we could grow up
to the maximum sample size which is 16 bits max.

I hit this overflow issue when using 'perf top -G dwarf' which produces
sample with the size around 8192 bytes.  We could configure any valid
sample size here using: '-G dwarf,size'.

Using array with sample max size instead for the event placeholder. Also
adding another safe check for the dynamic size of the user stack.

TODO: The 'struct perf_mmap' is quite big now, maybe we could use some
lazy allocation for event_copy size.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: David Ahern <dsahern@gmail.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1380721599-24285-1-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-11 12:17:40 -03:00
Petr Holasek
b81a48ea87 perf bench: Fix failing assertions in numa bench
Patch adds more subtle handling of -C and -N parameters in
parse_{cpu,node}_setup_list() functions when there isn't enough NUMA
nodes or CPUs present.  Instead of assertion and terminating benchmark,
partial test is skipped with error message and perf will continue to the
next one.

Fixed problem can be easily reproduced on machine with only one NUMA
node:

 # Running numa/mem benchmark...

  # Running main, "perf bench numa mem -a"

...

 # Running RAM-bw-remote, "perf bench numa mem -p 1 -t 1 -P 1024 -C 0 -M 1 -s
perf: bench/numa.c:622: parse_setup_node_list: Assertion `!(bind_node_0 < 0 ||
		bind_node_0 >= g->p.nr_nodes)' failed.
Aborted

Signed-off-by: Petr Holasek <pholasek@redhat.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Petr Benas <pbenas@redhat.com>
Link: http://lkml.kernel.org/r/1380821325-4017-1-git-send-email-pholasek@redhat.com
Signed-off-by: Petr Benas <pbenas@redhat.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-11 12:17:38 -03:00
Ramkumar Ramachandra
f3c236b0c7 perf tools: Ignore 'perf timechart' output file
The default output file produced by the 'perf timechart' tool is called
output.svg, add it to .gitignore.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Link: http://lkml.kernel.org/r/1380789636-4512-1-git-send-email-artagnon@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-11 12:17:37 -03:00
Ramkumar Ramachandra
3e7a081796 perf stat: Don't print bogus data on -e instructions
When only the instructions event is requested:

$ perf stat -e instructions git s
M  builtin-stat.c

 Performance counter stats for 'git s':

       917,453,420 instructions              #    0.00  insns per cycle

       0.213002926 seconds time elapsed

The 0.00 insns per cycle comment in the output is totally bogus and
misleading. It happens because update_shadow_stats() doesn't touch
runtime_cycles_stats when only the instructions event is requested. So,
omit printing the bogus data altogether.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1380616604-4077-1-git-send-email-artagnon@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-11 12:17:35 -03:00
Ramkumar Ramachandra
c458fe62ca perf stat: Don't print bogus data on -e cycles
When only the cycles event is requested:

$ perf stat -e cycles dd if=/dev/zero of=/dev/null count=1000000
1000000+0 records in
1000000+0 records out
512000000 bytes (512 MB) copied, 0.26123 s, 2.0 GB/s

 Performance counter stats for 'dd if=/dev/zero of=/dev/null count=1000000':

       911,626,453 cycles                    #    0.000 GHz

       0.262113350 seconds time elapsed

The 0.000 GHz comment in the output is totally bogus and misleading. It
happens because update_shadow_stats() doesn't touch runtime_nsecs_stats;
it is only written when a requested counter matches a SW_TASK_CLOCK. In
our case, since we have only requested HW_CPU_CYCLES,
runtime_nsecs_stats is unavailable. So, omit printing the comment
altogether.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1380539585-23859-3-git-send-email-artagnon@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-11 12:17:33 -03:00
Jiri Olsa
820042233b perf tools: Move start conditions to start of the flex file
Moving start conditions to start of the flex file so it's clear what the
INITIAL condition rules are.

Plus adding default rule for INITIAL condition. This prevents default
space to be printed for events like:

$ ./perf stat -e "cycles        " kill 2>/dev/null
        $
^^^^^^^^

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1380299398-10839-1-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-11 12:17:31 -03:00
Jiri Olsa
e2137086be perf tools: Add missing -ldl for gtk build
If we build perf with NO_LIBPYTHON=1 NO_LIBPERL=1 the '-ldl' is not
added to libs build fails if we have gtk2 code in, because it depends on
it.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1380221754-29865-1-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-11 12:17:29 -03:00
Adrian Hunter
f4be904d2f perf machine: Use snprintf instead of sprintf
To avoid buffer overruns.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1379845338-29637-2-git-send-email-adrian.hunter@intel.com
[ Split from aa7fe3b ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-11 12:17:27 -03:00
Ingo Molnar
a9faa0cab6 perf bench sched: Add --threaded option
Allow the measurement of thread versus process context switch
performance.

The default stays at 'process' based measurement, like lmbench's lat_ctx
benchmark.

Sample output:

 comet:~/tip/tools/perf> taskset 1 ./perf bench sched pipe
 # Running sched/pipe benchmark...
 # Executed 1000000 pipe operations between two processes

     Total time: 4.138 [sec]

       4.138729 usecs/op
         241620 ops/sec
 comet:~/tip/tools/perf> taskset 1 ./perf bench sched pipe --threaded
 # Running sched/pipe benchmark...
 # Executed 1000000 pipe operations between two threads

     Total time: 3.667 [sec]

       3.667667 usecs/op
         272652 ops/sec

Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Link: http://lkml.kernel.org/r/20130917114256.GA31159@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-11 12:17:25 -03:00
Arnaldo Carvalho de Melo
b52bc23414 perf trace: Add 'trace' alias to 'perf trace'
Make 'perf trace' more accessible by aliasing it to just 'trace':

  [root@zoo linux]# trace --duration 15 -a -e futex sleep 1
   110.092 (16.188 ms): libvirtd/1166 futex(uaddr: 0x185b344, op: WAIT|PRIV, val: 174293                    ) = 0
   110.101 (15.903 ms): libvirtd/1171 futex(uaddr: 0x185b3dc, op: WAIT|PRIV, val: 139265                    ) = 0
   111.594 (15.776 ms): libvirtd/1165 futex(uaddr: 0x185b344, op: WAIT|PRIV, val: 174295                    ) = 0
   111.610 (15.969 ms): libvirtd/1169 futex(uaddr: 0x185b3dc, op: WAIT|PRIV, val: 139267                    ) = 0
   113.556 (16.216 ms): libvirtd/1168 futex(uaddr: 0x185b3dc, op: WAIT|PRIV, val: 139269                    ) = 0
   291.265 (199.508 ms): chromium-brows/15830 futex(uaddr: 0x7fff2986bcb4, op: WAIT_BITSET|PRIV|CLKRT, val: 1, utime: 0x7fff2986bab0, val3: 4294967295) = -1 ETIMEDOUT Connection timed out
     360.354 (69.053 ms): chromium-brows/15830 futex(uaddr: 0x7fff2986bcb4, op: WAIT_BITSET|PRIV|CLKRT, val: 1, utime: 0x7fff2986bab0, val3: 4294967295) = -1 ETIMEDOUT Connection timed out
  [root@zoo linux]#

I.e. looking for futex calls that take at least 15ms, system wide, during a one
second window. Now to get callchains into 'trace' to figure out what are those
locks :-)

Requested-by: Ingo Molnar <mingo@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-ch4smqz8b5fmgrte7c5e4fuw@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-11 12:17:10 -03:00
Arnaldo Carvalho de Melo
75b757ca90 perf trace: Show path associated with fd in live sessions
For live sessions we can just access /proc to map an fd to its path, on
a best effort way, i.e. sometimes the fd will have gone away when we try
to do the mapping, as it is done in a lazy way, only when a reference to
such fd is made then the path will be looked up in /proc.

This is disabled when processing perf.data files, where we will have to
have a way to get getname events, be it via an on-the-fly 'perf probe'
event or after a vfs_getname tracepoint is added to the kernel.

A first step will be to synthesize such event for the use cases where
the threads in the monitored workload exist already.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-1r1ti33ye1666jezu2d8q1c3@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 17:43:18 -03:00
Arnaldo Carvalho de Melo
3d903aa74a perf trace: Beautify mlock & friends 'addr' arg
Printing it as an hex number.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-gd68zmnwbbofsv5m6w18intw@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 17:42:54 -03:00
David Ahern
b6e8f8f467 perf trace: Handle MSG_WAITFORONE not defined
Needed for compiles on Fedora 12 for example.

Signed-off-by: David Ahern <dsahern@gmail.com>
Link: http://lkml.kernel.org/r/1379900700-5186-2-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 17:42:37 -03:00
David Ahern
4f8c1b74c5 perf trace: Add beautifier for clock_gettime's clk_id argument
Before:
0.030 ( 0.002 ms): 2571 clock_gettime(which_clock: 1, tp: 0x7f3b45729cd0 ) = 0

After:
0.030 ( 0.002 ms): 2571 clock_gettime(which_clock: MONOTONIC, tp: 0x7f3b45729cd0 ) = 0

v2: Update to use the STRARRAY option

Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1379900700-5186-6-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 17:41:42 -03:00
Arnaldo Carvalho de Melo
46cce19ba8 perf trace: Beautify pipe2 'flags' arg
4.234 (0.005 ms): fetchmail/3224 pipe2(fildes: 0x7fffc72bcee0, flags: CLOEXEC) = 0

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-9e1jz78i6q6e0xr9fsitqbpe@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 17:41:24 -03:00
Arnaldo Carvalho de Melo
07120aa5d5 perf trace: Use socket's beautifiers in socketpair
For the address family and socket type.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-3a6cwwskobvan823pau76cm4@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 17:41:16 -03:00
Arnaldo Carvalho de Melo
4aa5823225 perf trace: Don't supress zeroed args when there is an strarray entry for it
Case in hand:

   9.682 ( 0.001 ms): Xorg/13079 setitimer(which: REAL, value: 0x7fffede42470) = 0

ITIMER_REAL is zero.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-6hnoqsjh99t4hxi3xu2nlwep@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 17:41:02 -03:00
Arnaldo Carvalho de Melo
453350dd0f perf trace: Add helper for syscalls with a single strarray arg
In such cases just stating the (arg, name, array) is enough, reducing
the size of the syscall formatters table.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-3k53p6dv2sh4ydsc5k5otoia@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 17:40:44 -03:00
Arnaldo Carvalho de Melo
5cea6ff265 perf trace: Beautify flock 'cmd' arg
4735.638 ( 0.003 ms): man/19881 flock(fd: 3, cmd: SH|NB) = 0
  4735.832 ( 0.002 ms): man/19881 flock(fd: 3, cmd: UN   ) = 0

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-amh3y88kh1nmclpwezqlarl8@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 17:37:50 -03:00
Arnaldo Carvalho de Melo
eac032c54b perf trace: Beautify epoll_ctl 'op' arg
[root@sandy ~]# perf trace -e epoll_ctl
 2.490 (0.003 ms): systemd-logind/586 epoll_ctl(epfd: 10, op: ADD, fd: 24, event: 0x7fff22314ef0) = 0
 2.621 (0.003 ms): systemd-logind/586 epoll_ctl(epfd: 10, op: DEL, fd: 24                       ) = 0
 2.833 (0.010 ms): systemd-logind/586 epoll_ctl(epfd: 10, op: ADD, fd: 24, event: 0x7fff22314cd0) = 0
 2.953 (0.002 ms): systemd-logind/586 epoll_ctl(epfd: 10, op: DEL, fd: 24                       ) = 0
 3.118 (0.002 ms): systemd-logind/586 epoll_ctl(epfd: 10, op: ADD, fd: 24, event: 0x7fff22314d20) = 0
 4.762 (0.002 ms): systemd-logind/586 epoll_ctl(epfd: 10, op: DEL, fd: 24                       ) = 0
^C[root@sandy ~]#

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-88xz9phc8cbicnxonud6if8h@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 17:36:37 -03:00
Namhyung Kim
4adcc43003 perf tools: Fix srcline sort key behavior
Currently the srcline sort key compares ip rather than srcline info.  I
guess this was due to a performance reason to run external addr2line
utility.  Now we have implemented the functionality inside, use the
srcline info when comparing hist entries.

Also constantly print "??:0" string for unknown srcline rather than
printing ip.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Reviewed-by: Jiri Olsa <jolsa@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1378876173-13363-10-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 17:26:42 -03:00
Roberto Vitillo
2f48fcd84e perf tools: Implement addr2line directly using libbfd
When the srcline sort key is used , the external addr2line utility needs
to be run for each hist entry to get the srcline info.  This can consume
quite a time if one has a huge perf.data file.

So rather than executing the external utility, implement it internally
and just call it.  We can do it since we've linked with libbfd already.

Signed-off-by: Roberto Agostino Vitillo <ravitillo@lbl.gov>
Reviewed-by: Jiri Olsa <jolsa@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1378876173-13363-9-git-send-email-namhyung@kernel.org
[ Use a2l_data struct instead of static globals ]
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 16:30:14 -03:00
Namhyung Kim
2cc9d0ef57 perf tools: Save failed result of get_srcline()
Some dso's lack srcline info, so there's no point to keep trying on
them.  Just save failture status and skip them.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Reviewed-by: Jiri Olsa <jolsa@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1378876173-13363-8-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 16:02:02 -03:00
Namhyung Kim
86c98cab5a perf annotate: Pass dso instead of dso_name to get_srcline()
This is a preparation of next change.  No functional changes are
intended.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Reviewed-by: Jiri Olsa <jolsa@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1378876173-13363-7-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 16:01:44 -03:00
Namhyung Kim
58d91a0068 perf tools: Do not try to call addr2line on non-binary files
No need to call addr2line since they don't have such information.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Reviewed-by: Jiri Olsa <jolsa@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1378876173-13363-6-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 16:01:05 -03:00
Namhyung Kim
f048d548f8 perf annotate: Factor out get/free_srcline()
Currently external addr2line tool is used for srcline sort key and
annotate with srcline info.  Separate the common code to prepare
upcoming enhancements.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Reviewed-by: Jiri Olsa <jolsa@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1378876173-13363-5-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 15:59:39 -03:00
Namhyung Kim
909b143162 perf hists: Free srcline when freeing hist_entry
We've been leaked srcline of hist_entry, it should be freed also.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Reviewed-by: Jiri Olsa <jolsa@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1378876173-13363-4-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 15:58:28 -03:00
Namhyung Kim
89da393c17 perf annotate: Reuse path from the result of addr2line
In the symbol__get_source_line(), path and src_line->path will have same
value, but they were allocated separately, and leaks one.  Just share
path to src_line->path.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Reviewed-by: Jiri Olsa <jolsa@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1378876173-13363-3-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 15:58:20 -03:00
Namhyung Kim
963ba5fd5d perf sort: Fix a memory leak on srcline
In the hist_entry__srcline_snprintf(), path and self->srcline are
pointing the same memory region, but they are doubly allocated.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Reviewed-by: Jiri Olsa <jolsa@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1378876173-13363-2-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 15:58:07 -03:00
Namhyung Kim
fc67297b16 perf tools: Separate out GTK codes to libperf-gtk.so
Separate out GTK codes to a shared object called libperf-gtk.so.  This
time only GTK codes are built with -fPIC and libperf remains as is.  Now
run GTK hist and annotation browser using libdl.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Reviewed-by: Pekka Enberg <penberg@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1379053663-13706-1-git-send-email-namhyung@kernel.org
[ Fix it up wrt Ingo's tools/perf build speedups ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 15:55:25 -03:00
Willy Tarreau
fc2be6968e perf symbols: Add new option --ignore-vmlinux for perf top
Running "perf top" on a machine with possibly invalid or non-matching
vmlinux at the various places results in no symbol resolving despite
/proc/kallsyms being present and valid.

Add a new option --ignore-vmlinux to explicitly indicate that we do not
want to use these kernels and just use what we have (kallsyms).

Signed-off-by: Willy Tarreau <w@1wt.eu>
Cc: Ingo Molnar <mingo@redhat.com>
Link: http://lkml.kernel.org/r/20130914083259.GA3418@1wt.eu
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:42:20 -03:00
Jiri Olsa
dd96c46b5c perf tools: Adding throttle event data struct support
Moving 'struct throttle_event' out of python code and making it global
as any other event.

There's no usage of throttling events in any perf commands so far
(besides python support), but we'll need this event data backup for
upcoming test.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1378031796-17892-5-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:39:18 -03:00
Jiri Olsa
b22d54b09a perf evlist: Introduce perf_evlist__new_default function
Adding new common function to create evlist with default event. It
spares some code lines in automated tests.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1378031796-17892-4-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:24:34 -03:00
Jiri Olsa
27050f530d perf tools: Add possibility to specify mmap size
Adding possibility to specify mmap size via -m/--mmap-pages
by appending unit size character (B/K/M/G) to the
number, like:
  $ perf record -m 8K ls
  $ perf record -m 2M ls

The size is rounded up appropriately to follow perf
mmap restrictions.

If no unit is specified the number provides pages as
of now, like:
  $ perf record -m 8 ls

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1378031796-17892-3-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:24:20 -03:00
Jiri Olsa
994a1f78b1 perf tools: Check mmap pages value early
Move the check of the mmap_pages value to the options parsing time, so
we could rely on this value on other parts of code.

Related changes come in the next patches.

Also changes perf_evlist::mmap_len to proper size_t type.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1378031796-17892-2-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:24:10 -03:00
Davidlohr Bueso
f37376cd72 perf lock: Account for lock average wait time
While perf-lock currently reports both the total wait time and the
number of contentions, it doesn't explicitly show the average wait time.
Having this value immediately in the report can be quite useful when
looking into performance issues.

Furthermore, allowing report to sort by averages is another handy
feature to have - and thus do not only print the value, but add it to
the lock_stat structure.

Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Cc: Aswin Chandramouleeswaran <aswin@hp.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1378693159-8747-8-git-send-email-davidlohr@hp.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:24:01 -03:00
Davidlohr Bueso
60a25cbc4a perf lock: Limit bad rate precision
Two decimal precision should be enough for this.

Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Cc: Aswin Chandramouleeswaran <aswin@hp.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1378693159-8747-7-git-send-email-davidlohr@hp.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:23:54 -03:00
Davidlohr Bueso
375eb2be55 perf lock: Redo __cmd_report
This function should be straightforward, and we can remove some trivial
logic by moving the functionality of read_events() into __cmd_report() -
thus allowing a new session to be properly deleted.

Since the 'info' subcommand also needs to process the recorded events,
add a 'display_info' flag to differentiate between report and info
commands.

Furthermore, this patch also calls perf_session__has_traces(), making
sure that we don't compare apples and oranges, fixing a segfault when
using an perf.data file generated by a different subcommand. ie:

./perf mem record sleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.017 MB perf.data (~724 samples) ]

./perf lock report
Segmentation fault (core dumped)

Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Cc: Aswin Chandramouleeswaran <aswin@hp.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1378693159-8747-5-git-send-email-davidlohr@hp.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:23:48 -03:00
Davidlohr Bueso
0a98c7febf perf lock: Plug some memleaks
Address some trivial leaks.

Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Cc: Aswin Chandramouleeswaran <aswin@hp.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1378693159-8747-4-git-send-email-davidlohr@hp.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:23:39 -03:00
Davidlohr Bueso
b33492ade4 perf lock: Return proper code in report_lock_*_event
The report_lock_*_event() functions return -1 when lock_stat_findnew(),
thread_stat_findnew() or get_seq() return NULL. These functions only
return this value when failing to allocate memory, this return -ENOMEM
instead.

Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Cc: Aswin Chandramouleeswaran <aswin@hp.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1378693159-8747-3-git-send-email-davidlohr@hp.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:23:32 -03:00
Davidlohr Bueso
02ad0702e5 perf lock: Remove dead code
No need for break statements after goto jumps.

Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Cc: Aswin Chandramouleeswaran <aswin@hp.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1378693159-8747-2-git-send-email-davidlohr@hp.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:23:21 -03:00
Jiri Olsa
918512b435 perf tools: Unify page_size usage
Making page_size global from the util object.

Removing the not needed one.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1379003976-5839-4-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:22:55 -03:00
Jiri Olsa
5283ec23a0 perf tools: Remove unused trace-event-* code
Removing unused trace-event-* code.

Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1379003976-5839-3-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:15:28 -03:00
Ricardo Ribalda Delgado
9cd00941f8 perf symbols: Support for Openembedded/Yocto -dbg packages
On OpenEmbedded the symbol files are located under a .debug folder on
the same folder as the binary file.

This patch adds support for such files.

Without this patch on perf top you can see:

no symbols found in /usr/lib/gstreamer-1.0/libtheoraenc.so.1.1.2, maybe
install a debug package?

84.56%  libtheoraenc.so.1.1.2       [.] 0x000000000000b346

With this patch symbols are shown:

19.06%  libtheoraenc.so.1.1.2       [.] oc_int_frag_satd_thresh_mmxext
9.76%   libtheoraenc.so.1.1.2       [.] oc_analyze_mb_mode_luma
5.58%   libtheoraenc.so.1.1.2       [.] oc_qii_state_advance
4.84%   libtheoraenc.so.1.1.2       [.] oc_enc_tokenize_ac
...

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Waiman Long <Waiman.Long@hp.com>
Link: http://lkml.kernel.org/r/1379512574-25912-1-git-send-email-ricardo.ribalda@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:12:41 -03:00
Ramkumar Ramachandra
6e0dc374a2 perf completion: Use more comp words
The completion words $words and $cword are available, so we might as
well use them instead of directly accessing COMP_WORDS.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/r/1372941691-14684-8-git-send-email-artagnon@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:12:31 -03:00
Ramkumar Ramachandra
c3fb6717e9 perf completion: Strip dependency on bash-completion
The bash-completion package defines the _get_comp_words_by_ref function.
There is no need to depend on it, as we can reimplement it like git.git
has.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Link: http://lkml.kernel.org/r/1372941691-14684-7-git-send-email-artagnon@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:12:24 -03:00
Ramkumar Ramachandra
4685a6cfae perf completion: Strip function_exists ()
Use "type" to check existence consistently.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/r/1372941691-14684-6-git-send-email-artagnon@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:12:06 -03:00
Ramkumar Ramachandra
7b6c48e16e perf completion: Strip dependency on _filedir
_filedir is defined in the bash-completion package, but there is no need
to depend on it.  Instead, call complete with multiple -o arguments
before the -F argument like in git.git's completion script.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/r/1372941691-14684-4-git-send-email-artagnon@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:11:55 -03:00
Ramkumar Ramachandra
30079d1d5e perf completion: Update __ltrim_colon_completions
The function is taken from the bash-completion package; update it to use
the latest version where colon_word doesn't miss quoting.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/r/1372941691-14684-3-git-send-email-artagnon@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:11:48 -03:00
Ramkumar Ramachandra
1ba6e01782 perf completion: Don't dictate perf install location
The statement

  have perf

limits the locations in which to look for the perf program.  Moreover,
it depends on the bash-completion package to be installed.  Replace it
with a call to `type perf`.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/r/1372941691-14684-2-git-send-email-artagnon@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:11:40 -03:00
Arnaldo Carvalho de Melo
50c95cbd70 perf trace: Add option to show process COMM
Enabled by default, disable with --no-comm, e.g.:

 181.821 (0.001 ms): deja-dup-monit/10784 recvmsg(fd: 8, msg: 0x7fff4342baf0, flags: PEEK|TRUNC|CMSG_CLOEXEC ) = 20
 181.824 (0.001 ms): deja-dup-monit/10784 geteuid(                                                           ) = 1000
 181.825 (0.001 ms): deja-dup-monit/10784 getegid(                                                           ) = 1000
 181.834 (0.002 ms): deja-dup-monit/10784 recvmsg(fd: 8, msg: 0x7fff4342baf0, flags: CMSG_CLOEXEC            ) = 20
 181.836 (0.001 ms): deja-dup-monit/10784 geteuid(                                                           ) = 1000
 181.838 (0.001 ms): deja-dup-monit/10784 getegid(                                                           ) = 1000
 181.705 (0.003 ms): evolution-addr/10924 recvmsg(fd: 10, msg: 0x7fff17dc6990, flags: PEEK|TRUNC|CMSG_CLOEXEC) = 1256
 181.710 (0.002 ms): evolution-addr/10924 geteuid(                                                           ) = 1000
 181.712 (0.001 ms): evolution-addr/10924 getegid(                                                           ) = 1000
 181.727 (0.003 ms): evolution-addr/10924 recvmsg(fd: 10, msg: 0x7fff17dc6990, flags: CMSG_CLOEXEC           ) = 1256
 181.731 (0.001 ms): evolution-addr/10924 geteuid(                                                           ) = 1000
 181.734 (0.001 ms): evolution-addr/10924 getegid(                                                           ) = 1000
 181.908 (0.002 ms): evolution-addr/10924 recvmsg(fd: 10, msg: 0x7fff17dc6990, flags: PEEK|TRUNC|CMSG_CLOEXEC) = 20
 181.913 (0.001 ms): evolution-addr/10924 geteuid(                                                           ) = 1000
 181.915 (0.001 ms): evolution-addr/10924 getegid(                                                           ) = 1000
 181.930 (0.003 ms): evolution-addr/10924 recvmsg(fd: 10, msg: 0x7fff17dc6990, flags: CMSG_CLOEXEC           ) = 20
 181.934 (0.001 ms): evolution-addr/10924 geteuid(                                                           ) = 1000
 181.937 (0.001 ms): evolution-addr/10924 getegid(                                                           ) = 1000
 220.718 (0.010 ms): at-spi2-regist/10715 sendmsg(fd: 3, msg: 0x7fffdb8756c0, flags: NOSIGNAL                ) = 200
 220.741 (0.000 ms): dbus-daemon/10711  ... [continued]: epoll_wait()) = 1
 220.759 (0.004 ms): dbus-daemon/10711 recvmsg(fd: 11, msg: 0x7ffff94594d0, flags: CMSG_CLOEXEC              ) = 200
 220.780 (0.002 ms): dbus-daemon/10711 recvmsg(fd: 11, msg: 0x7ffff94594d0, flags: CMSG_CLOEXEC              ) = 200
 220.788 (0.001 ms): dbus-daemon/10711 recvmsg(fd: 11, msg: 0x7ffff94594d0, flags: CMSG_CLOEXEC              ) = -1 EAGAIN Resource temporarily unavailable
 220.760 (0.004 ms): at-spi2-regist/10715 sendmsg(fd: 3, msg: 0x7fffdb8756c0, flags: NOSIGNAL                ) = 200
 220.771 (0.023 ms): perf/26347 open(filename: 0xf2e780, mode: 15918976                               ) = 19
 220.850 (0.002 ms): perf/26347 close(fd: 19                                                          ) = 0

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-6be5jvnkdzjptdrebfn5263n@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:11:33 -03:00
Arnaldo Carvalho de Melo
49af9e93ad perf trace: Beautify eventfd2 'flags' arg
61.168 ( 0.004 ms): 24267 eventfd2(flags: CLOEXEC|NONBLOCK) = 9

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-3hg8eajdzil077501c8f5jkw@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:11:21 -03:00
Arnaldo Carvalho de Melo
b2cc99fdaa perf trace: Beautify send/recv syscall 'flags' arg
[root@sandy ~]# perf trace -a -e recvmmsg,recvmsg,recvfrom,sendto,sendmsg,sendmmsg
  6.901 (0.002 ms): 589 recvmsg(fd: 51, msg: 0x7fff35673420, flags: CMSG_CLOEXEC) = -1 EAGAIN Resource temporarily unavailable
  6.966 (0.008 ms): 589 sendmsg(fd: 50, msg: 0x7fff35673230, flags: NOSIGNAL    ) = 961
  6.984 (0.004 ms): 979 sendmsg(fd: 3, msg: 0x7fff5b484940, flags: NOSIGNAL     ) = 945

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-h25k5k50nac0ej5cl5iwgvae@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:11:13 -03:00
Arnaldo Carvalho de Melo
22ae5cf1c9 perf trace: Don't print zeroed args
This way we make the output more compact.

If somebody complain (and provide a sane reason why we would like to see
zeroes) we can make it an optional, ~/.perfconfig configurable knob.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-myqozw43hk8z2r5hsupzdk82@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:11:06 -03:00
David Ahern
7704805920 perf trace: Remove duplicate mmap entry in syscall_fmts array
Entries in syscall_fmts need to be in alphabetical order, and the
duplicate entry breaks bsearch on new entries around this duplicate
entry.

Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1378319865-55695-2-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:10:56 -03:00
David Ahern
4bb09192d3 perf trace: Add option to show full timestamp
Current timestamp shown for output is time relative to firt sample. This
patch adds an option to show the absolute perf_clock timestamp which is
useful when comparing output across commands (e.g., perf-trace to
perf-script).

Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1378319865-55695-1-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:10:49 -03:00
Arnaldo Carvalho de Melo
c045bf02e4 perf trace: Beautify rlmimit resources
On the getrlimit, setrlimit and prlimit64 syscalls.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-pups75313afhn7p96qwhzs9v@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:10:42 -03:00
Arnaldo Carvalho de Melo
511089994e perf trace: Beautify access 'mode' arg
Removing the _OK suffix and using RWX when all three bits are set, for
instance.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-ypaz9k43lyqy94679feqnv8x@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:10:35 -03:00
Arnaldo Carvalho de Melo
a28b24b278 perf trace: Beautify socket 'type' arg
Taking into account the fact that the SOCK_ types can be overriden for
ABI reasons on MIPS and also masking and interpreting the socket flags
(NONBLOCK and CLOEXEC), printing whatever is left in the flags bits
as an hex number, or'ed.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-cbn57082gq9v0sbsd67edwjq@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:10:28 -03:00
Arnaldo Carvalho de Melo
e10bce815d perf trace: Beautify socket 'family' arg
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-8xuaupgmy82v7sha3l09oaux@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:10:20 -03:00
Arnaldo Carvalho de Melo
8bad5b0abf perf trace: Beautify signal number arg in several syscalls
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-ek8w714ramabyl5jqqvjlbyb@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:10:14 -03:00
Arnaldo Carvalho de Melo
eb5b1b1475 perf trace: Beautify rt_sigprocmask 'how' arg
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-e2epkc38e3x0uqmi1xie4tgc@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:10:06 -03:00
Arnaldo Carvalho de Melo
80f587d5f9 perf trace: Beautify fcntl 'cmd' arg
This is just for the low hanging fruit 'cmd' arg, a proper beautifier
will as well use arg->mask to ignore the third arg for some of the
cmds.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-phhvcyi9vdnxw9l11tbquvru@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:09:58 -03:00
Arnaldo Carvalho de Melo
efe6b882cd perf trace: Use strarray for ltrace's whence arg
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-5f9jhbq8my4ojarhtlygveox@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:09:46 -03:00
Arnaldo Carvalho de Melo
1f115cb72e perf trace: Allow passing parms to arg formatters
So that we can have generic formatters that act upon specific
parameters.

Start using them with a simple string table that assumes entries
will be indexes to a string table, like with the 'which' parm
for the set and getitimer syscalls

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-r0dqhapr8j6150v1wctgg340@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:09:28 -03:00
Arnaldo Carvalho de Melo
01533e9720 perf trace: Put syscall formatter parms into struct
So that we can add more state to formatters without having to modify
all of them.

Example is to pass a table to a generic string formatter, like for
setitimer 'which' arg.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-zyi2esmas5wfrxznh0x0fkiz@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-09 11:08:15 -03:00
Jiri Olsa
165108a92f tools/perf/build: Clean up feature_print_code()
Remove DUMMY by making sure 'feature_print' is evaluated and thus
all messages are printed.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Link: http://lkml.kernel.org/r/20131008155110.GA15558@krava.redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:49:04 +02:00
Ingo Molnar
aa4acf6cf1 tools/perf/build: Pass through LDFLAGS to feature tests
David Ahern reported that when passing in LDFLAGS=-static then
the feature checks still succeed - causing build failures down
the line because the static libraries are missing.

Solve this by passing through LDFLAGS to the feature-check
Makefile.

Reported-by: David Ahern <dsahern@gmail.com>
Tested-by: David Ahern <dsahern@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/20131007155129.GA1066@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:49:03 +02:00
Ingo Molnar
20c99e8217 tools/perf/build: Harmonize the style of the feature testcases
The various testcases used different styles, which was not really
visible as long as they hid in feature-tests.mak. Now that they
are out in the open make them prettier.

( Also delete the leftover, empty feature-tests.mak file. )

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-drDWk8xltndjdsespzjbhu6w@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:49:03 +02:00
Ingo Molnar
1f7c645ab4 tools/perf/build: Fix O=/some/dir perf.o type of targets
If someone specifies a single target, mixed with O=, the following way:

    hubble:~/tip/tools/perf> make O=/tmp/perf util/stat.o
    BUILD: Doing 'make -j8' parallel build
    gcc  -Wbad-function-cast -Wdeclaration-after-statement -Wformat-security -Wformat-y2k [...]

The build might even fail, if a target depends on other targets:

    hubble:~/tip/tools/perf> make O=/tmp/perf perf.o
    ...
    perf.c: In function ‘handle_options’:
    perf.c:155:21: error: ‘PERF_HTML_PATH’ undeclared (first use in this function)

The correct way to invoke such targets is:

    hubble:~/tip/tools/perf> make O=/tmp/perf /tmp/perf/perf.o
    BUILD: Doing 'make -j8' parallel build
    GEN /tmp/perf/common-cmds.h
    CC /tmp/perf/perf.o

But that's unnecessary typing and it's also easy to mistakenly build into the
source directory.

To fix this remove the generic suffix rules and add redirection to $(OUTPUT)
for the most popular .o targets.

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-mk0oiukmhgSbrll6chrPkkqr@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:49:02 +02:00
Ingo Molnar
b102420b50 tools/perf/build: Fix non-canonical directory names in O=
This was a long-standing bug, relative pathnames like O=dir did not fully
work in the build system:

    $ make O=localdir clean

    SUBDIR Documentation
    ../../scripts/Makefile.include:3: *** O=localdir does not exist.  Stop.
    make[1]: *** [clean] Error 2
    make: *** [clean] Error 2

Fix this by canonizing the directory before passing it to Makefile.perf.

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-hchMp1hozn9tqgswWcooxcru@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:49:01 +02:00
Ingo Molnar
684f434cc0 tools/perf/build: Exclude MAKEFLAGS from nested invocation
In case the user specifies MAKEFLAGS as an environment variable,
or uses 'make -jN' explicitly, the options can conflict and result in:

    BUILD: Doing 'make -j8' parallel build
    make[1]: warning: -jN forced in submake: disabling jobserver mode.
    GEN common-cmds.h
    make[1]: *** write jobserver: Bad file descriptor.  Stop.

Make sure we invoke the main makefile in a pristine state.

Users who want to do something non-standard can use the:

  make -f Makefile.perf

method to invoke the makefile.

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-uen6hzTvkqqngqwjma9yoEgw@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:49:01 +02:00
Ingo Molnar
1c2d1d8cf4 tools/perf/build: Make sure autodep feature binaries honor the O= setting
Arnaldo noticed that the feature-check binaries are generated in the
config/check-features/ directory even if O= is specified.

Implement $(OUTPUT) logic for config/check-features/Makefile.

Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-NLwlnv5prsubuey0vfocebym@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:49:00 +02:00
Ingo Molnar
b016a0dd08 tools/perf/build: Pass through all targets to Makefile.perf
Jiri reported that 'make .o' stopped working:

  > [jolsa@krava perf]$ make -f Makefile perf.o
  > cc    -c -o perf.o perf.c
  > In file included from builtin.h:4:0,
  >                  from perf.c:9:
  > util/util.h:74:24: fatal error: lk/debugfs.h: No such file or directory
  > compilation terminated.
  > make: *** [perf.o] Error 1

This is due to GNU make having built-in rules for popular targets such
as *.o. Clear them out so that all targets as passed through to Makefile.perf.

Reported-by: Jiri Olsa <jolsa@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Link: http://lkml.kernel.org/n/tip-5wkuvmlaaxtfgepKcvRij8sh@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:59 +02:00
Ingo Molnar
3ca576a481 tools/perf/build: Collapse the test-all.c testcase
Simplify test-all.c by including it all the testcases via #include.

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-pcZlwqq5ou7Ebvkekvhtzfbm@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:59 +02:00
Ingo Molnar
1e3f30fae7 tools/perf/build: Clean up various testcases
Prepare to include them into test-all.c directly, by making sure
that they build cleanly and without warnings.

Also make sure they make a certain amount of sense and don't crash
when executed.

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-Mn9gsdutzopoowk3xurqpsxE@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:58 +02:00
Ingo Molnar
0648f839ff tools/perf/build: Remove unused config/feature-tests.mak
Also remove try-cc et al. These got obsoleted by the split-out feature checks in
config/feature-checks/.

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-Y6ailbiranadqlrl8Dfivjbi@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:57 +02:00
Ingo Molnar
1c47661a93 tools/perf/build: Split out feature checks: 'liberty', 'liberty-z', 'cplus-demangle'
Note that these are rarely executed tests, so we call feature_check() explicitly
and don't have them in CORE_FEATURE_CHECKS.

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-pvumlx6mbtfxffgrlwO2mRcx@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:56 +02:00
Ingo Molnar
73a725f000 tools/perf/build: Standardize the various messages output by parallel make
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-mky0rtpwxi3ivxsvdjoOEmhr@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:56 +02:00
Ingo Molnar
bd69cc286d tools/perf/build: Flip Makefile.parallel and Makefile.perf
To make it more apparent that there is not change in functionality we introduced
Makefile.parallel separately and now flip it with the main Makefile, which
moves into Makefile.perf.

The renames are:

   Makefile.parallel => Makefile
   Makefile          => Makefile.perf

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-igRfuw9ugbnnpixLd6wpptzl@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:55 +02:00
Ingo Molnar
2cfbe880f0 tools/perf/build: Automatically build in parallel, based on number of CPUs in the system
Implement automatic parallel builds when building in tools/perf:

  $ time make

  # [ perf build: Doing 'make -j12' parallel build. ]

  Auto-detecting system features:

  ...

  real    0m9.265s
  user    0m59.888s
  sys     0m6.082s

On GNU make achieving this is not particularly easy, it requires a separate
makefile, which then invokes the main Makefile.

( Note: this patch adds Makefile.parallel to show the concept - the two
  makefiles will be flipped in the next patch to avoid having to specify -f
  to get parallelism in the default build. )

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-dvBjwqiTyzrufzkz8oanhpf9@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:54 +02:00
Ingo Molnar
b3b64a1223 tools/perf/build: Improve printout-of auto-detected features
Change the print-out of auto-detected features by making sure that
repeat invocations of 'make' when all features are successfully
detected do not produce the (rather lengthy) autodetection printout.

( When one or more features are missing then we still print out the
  feature detection table, to make sure people are aware of the
  resulting limitations. )

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-qd8sMsshcjomxqx9bQcufmaa@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:54 +02:00
Ingo Molnar
f1138ec66e tools/perf/build: Speed up auto-detection
The detection of certain rarely detected features can be delayed
to when they are actually needed.

So speed up the common case of auto-detection by pre-building only
a core set of features and populating only their feature-flags.

[ Features not listed in CORE_FEATURES need to built explicitly
  via the feature_check() function. ]

(Also order the feature names alphabetically, while at it.)

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-xQkuveknd0gqla1dfxrqKpkl@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:53 +02:00
Ingo Molnar
de0f03fb8d tools/perf/build: Invoke feature-checks 'clean' target from the main Makefile
config/Makefile is not included for the 'clean' target, so invoke the
config/feature-checks/Makefile 'clean' target from Makefile.perf.

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-sh2cGvmsjbrazarlqre7pVwt@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:52 +02:00
Ingo Molnar
31f6be65e0 tools/perf: Fix double/triple-build of the feature detection logic during 'make install' et al
Linus reported the following perf build system bug:

  'Another annoyance during that make was that "make install" seems to
   want to re-make the thing I just built. That's absolutely horrible, [...]'

The thing that got re-built were 'only' the (numerous) feature checks,
not the whole project - but still it was mighty annoying as the feature
checks took 9+ seconds even on reasonably fast boxes.

Even with the autodep patches where feature detection is much faster
it wastes resources, wastes screen real estate and confuses users if
we execute feature detection twice.

There were two sources for these unnecessary re-builds of the feature
checks:

 - Unnecessary nested invocations of $(MAKE), apparently to be able
   to do conditional compilation dependent on documentation tools
   presence. Use straight dependencies instead, with no nesting.

 - A direct invocation of $(MAKE) to rebuild the PERF-VERSION-FILE.
   This is apparently done to be able to include it into the
   Makefile:

    -include $(OUTPUT)PERF-VERSION-FILE

   but that's entirely pointless for two reasons: 1) the version file
   gets regenerated by the initial build pass anyway, 2) including it
   is futile, given its contents:

    #define PERF_VERSION "3.12.rc3.g8510c7"

   'make' will interpret that as a comment line...

   So just remove this part of the doc-generation logic.

With these things fixed a 'make install' now rebuilds only what is needed.

A repeated 'make install' on an already built tree is super fast now,
it finishes in under 0.3 seconds:

  #
  #  After the patch:
  #

  $ time make install

  ...

  real    0m0.280s
  user    0m0.162s
  sys     0m0.054s

Prior all the autodep changes and prior this fix, a repeat 'make install'
took 24.1 seconds (!) on the same system:

  #
  #  Before the patches:
  #

  $ time make install

  ...

  real    0m24.109s
  user    0m21.171s
  sys     0m2.449s

Which almost entirely was caused by fixable build system fat.
We are now literally ~86 times faster.

A fresh rebuild and install now takes just 11.4 seconds:

  #
  #  After the patch:
  #

  $ make clean
  $ time make -j16 install

  ...

  real    0m11.457s
  user    1m43.411s
  sys     0m7.610s

Without the patches it took 27.8 seconds:

  #
  #  Before the patches:
  #

  $ make clean
  $ time make -j16 install

  ...

  real    0m27.801s
  user    1m59.242s
  sys     0m9.749s

So even in the complete rebuild case we are now ~2.5 times faster.

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-x4qjnxjGrgxpribq8sdakfTp@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:51 +02:00
Ingo Molnar
c9404c6650 tools/perf/build: Speed up the final link
libtraceevent.a and liblk.a rules have always-missed dependencies,
which causes python.so to be relinked at every build attempt - even
if none of the affected code changes.

This slows down re-builds unnecessarily, by adding more than a second
to the build time:

  comet:~/tip/tools/perf> time make

  ...

    SUBDIR /fast/mingo/tip/tools/lib/lk/
    make[1]: `liblk.a' is up to date.
    SUBDIR /fast/mingo/tip/tools/lib/traceevent/
    LINK perf
    GEN python/perf.so

  real    0m1.701s
  user    0m1.338s
  sys     0m0.301s

Add the (trivial) dependencies to not force a re-link.

This speeds up an empty re-build enormously:

  comet:~/tip/tools/perf> time make

  ...

  real    0m0.207s
  user    0m0.134s
  sys     0m0.028s

[ This adds some coupling between the build dependencies of
  libtraceevent and liblk - but until those stay relatively
  simple this should not be an issue. ]

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-wvmlrurufuk6mo1ovtNigguT@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:51 +02:00
Ingo Molnar
c72e3f04b4 tools/perf/build: Speed up git-version test on re-make
util/PERF-VERSION-GEN is currently executed on every build attempt,
and this script can take a lot of time on trees that are at a
significant git-distance from Linus's tree:

  $ time util/PERF-VERSION-GEN

  real    0m4.343s
  user    0m4.176s
  sys     0m0.140s

It also takes a lot of time if the Git repository is network attached, etc.,
because the commands it uses:

        TAG=$(git describe --abbrev=0 --match "v[0-9].[0-9]*" 2>/dev/null )

has to count commits from the nearest tag and thus has to access (and
decompress) every git commit blob on the relevant version path.

Even on Linus's tree it takes 0.28 seconds on a fast box to count all the
commits and get the git version string:

  $ time util/PERF-VERSION-GEN

  real    0m0.279s
  user    0m0.247s
  sys     0m0.025s

But the version string only has to be regenerated if the git repository's
head commit changes. So add a dependency of ../../.git/HEAD and touch
the file every time it's regenerated, so that Make's build rules can
pick it up and cache the result:

  make: `PERF-VERSION-FILE' is up to date.

  real    0m0.184s
  user    0m0.117s
  sys     0m0.026s

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-wvmlrurufuk6mo1ovtNigguT@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:50 +02:00
Ingo Molnar
baa9c30e1e tools/perf/build: Speed up auto-detection of features by adding a 'test-all' target
Concatenate all feature checks into test-all.c.

This can be built and checked faster than all the individual tests.

If test-all fails then we still check all the individual features, so
this is a pure speedup, it should have no effects on functionality.

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-5hlcb2qorzwfwrWTjiygjjih@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:49 +02:00
Ingo Molnar
fb1c9185e3 tools/perf: Turn strlcpy() into a __weak function
The strlcpy() feature check slows every build unnecessarily - so make it
a __weak function so it does not have to be auto-detected.

If the libc (or any other library) has an strlcpy() implementation it will
be used - otherwise our fallback is active.

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-zjbrcupapu08ePsyYhhhxiwk@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:49 +02:00
Ingo Molnar
7a10822a30 tools/perf: Clean up util/include/linux/compiler.h
Use the standard CPP style we use in the kernel:

 #ifndef foo
 # define foo bar
 #endif

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-iqyVrrHqpn0eiwenvgwrh8lf@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:48 +02:00
Ingo Molnar
4cc9117a35 tools/perf/build: Split out feature check: 'backtrace'
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-ihnwe6cvglVkudyvcavP1wql@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:47 +02:00
Ingo Molnar
34ef21622f tools/perf/build: Split out feature check: 'on-exit'
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-gmywXandzfxnlcbzlX6bkpw1@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:46 +02:00
Ingo Molnar
d0707c9172 tools/perf/build: Split out feature check: 'strlcpy'
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-ektO8cgvupthhyqqczSok2sr@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:46 +02:00
Ingo Molnar
3b7646e45d tools/perf/build: Split out feature check: 'libbfd'
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-cdxdfv7Corpfvjg9Skezhvjn@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:45 +02:00
Ingo Molnar
95d061c8a9 tools/perf/build: Split out feature check: 'libpython-version'
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-raHmlqlnv0zexsrPau8hhane@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:44 +02:00
Ingo Molnar
9734163b6e tools/perf/build: Split out feature check: 'libpython'
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-9wfutfb8ufFHrddrwlejqrai@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:44 +02:00
Ingo Molnar
7181a6714e tools/perf/build: Split out feature check: 'libperl'
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-ggucqbwFwpxyuxde6dm7itHq@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:43 +02:00
Ingo Molnar
c7a79e96dc tools/perf/build: Split out feature check: 'gtk2-infobar'
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-oumjyVjonjvgH8ts4mftagel@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:42 +02:00
Ingo Molnar
7ef9e055ce tools/perf/build: Split out feature check: 'gtk2'
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-gfwzurn7wywiviLp7Swyyqsy@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:41 +02:00
Ingo Molnar
b9498b508a tools/perf/build: Split out feature check: 'libslang'
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-FGmpkydfwqlkaw7yy8ewjpza@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:41 +02:00
Ingo Molnar
d795a658eb tools/perf/build: Split out feature check: 'libaudit'
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-orhejqtjao3vf4wxwBUdzhaz@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:40 +02:00
Ingo Molnar
058f952de9 tools/perf/build: Split out feature check: 'libunwind'
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-vTiatsVyva3tfgh3vhxaidxl@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:39 +02:00
Ingo Molnar
308e1e700a tools/perf/build: Clean up the libunwind logic in config/Makefile
Nest the rules properly. No change in functionality.

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-jjlmizjmhockUs04wqnScnkl@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:38 +02:00
Ingo Molnar
b7bcef6f8e tools/perf/build: Split out feature check: 'libelf-getphdrnum'
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-wa9qstb8erbjreLxiHepzjfw@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:37 +02:00
Ingo Molnar
8869b17ee0 tools/perf/build: Split out feature check: 'libelf-mmap'
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-9fxnxjcmrgbSvipxlwsdQ8fg@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:37 +02:00
Ingo Molnar
fb3d333b3f tools/perf/build: Clean up the mmap logic in config/Makefile
Nest the rules properly. No change in functionality.

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-wwktuHl4Ra5lyrrretkxmxqf@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:36 +02:00
Ingo Molnar
8295d4e272 tools/perf/build: Split out feature check: 'dwarf'
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-dsx0fn9mjwfprizboANvtuup@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:36 +02:00
Ingo Molnar
e12762cfd9 tools/perf/build: Split out feature check: 'glibc'
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-nqnnsptw7ivOzhzbNjiun7ds@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:35 +02:00
Ingo Molnar
8f7f8005f5 tools/perf/build: Split out feature check: 'libelf'
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-qznhihaasbysfqO7ffvRsf9q@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:34 +02:00
Ingo Molnar
50eed7a71e tools/perf/build: Clean up the libelf logic in config/Makefile
Nest the rules properly. No change in functionality.

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-dDgivr9xtjrof2vmoyOfwxkj@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:34 +02:00
Ingo Molnar
78e9d65508 tools/perf/build: Split out feature check: 'bionic'
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-xjfVewprrfhlo2wuzbnpVb1k@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:33 +02:00
Ingo Molnar
1ea6f99efd tools/perf/build: Split out feature check: 'fortify-source'
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-wicrcLCy2wkalka7iwsuzgpb@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:32 +02:00
Ingo Molnar
c25104452d tools/perf/build: Split out feature check: 'volatile-register-var'
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-5dOevlybbwvbk3zTbcxrrqet@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:32 +02:00
Ingo Molnar
430be5ab0a tools/perf/build: Split out feature check: 'stackprotector'
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-eyLYjhskzn6qxkoyjtjic4ap@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:31 +02:00
Ingo Molnar
90ac5422b6 tools/perf/build: Split out feature check: 'stackprotector-all'
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-gupddm9clctVYws3lyexfdhg@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:30 +02:00
Ingo Molnar
3ae069cfda tools/perf/build: Split out feature check: 'libnuma'
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-vixsrpggxFjhz7kppqgrGr6s@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:30 +02:00
Ingo Molnar
8b6eb56a95 tools/perf/build: Add 'autodep' functionality, generate feature test dependencies automatically
Use GCC's -MD feature to generate a dependency file for each feature test .c file,
and include that .d file in the config/feature-checks/Makefile.

This allows us to do two things:

 - speed up feature tests
 - detect removal or changes in build dependencies - including system libraries/headers

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-Jfma8pmPnnqzpxjbs3hpgmsj@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:29 +02:00
Ingo Molnar
b6aa997941 tools/perf/build: Add feature check core code
Start the split-out of the feature check code by adding a list of features to be
tested, and rules to process that list by building its matching feature-check
file in config/feature-checks/test-<feature>.c.

Add 'hello' as the initial feature.

This structure will allow us to build split-out feature checks in parallel and
thus speed up feature detection dramatically.

No change in functionality: no feature check is used by the build rules yet.

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-pixkihgscFaohfFigq5yt9gs@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:28 +02:00
Ingo Molnar
89fe808ae7 tools/perf: Standardize feature support define names to: HAVE_{FEATURE}_SUPPORT
Standardize all the feature flags based on the HAVE_{FEATURE}_SUPPORT naming convention:

		HAVE_ARCH_X86_64_SUPPORT
		HAVE_BACKTRACE_SUPPORT
		HAVE_CPLUS_DEMANGLE_SUPPORT
		HAVE_DWARF_SUPPORT
		HAVE_ELF_GETPHDRNUM_SUPPORT
		HAVE_GTK2_SUPPORT
		HAVE_GTK_INFO_BAR_SUPPORT
		HAVE_LIBAUDIT_SUPPORT
		HAVE_LIBELF_MMAP_SUPPORT
		HAVE_LIBELF_SUPPORT
		HAVE_LIBNUMA_SUPPORT
		HAVE_LIBUNWIND_SUPPORT
		HAVE_ON_EXIT_SUPPORT
		HAVE_PERF_REGS_SUPPORT
		HAVE_SLANG_SUPPORT
		HAVE_STRLCPY_SUPPORT

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-u3zvqejddfZhtrbYbfhi3spa@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-09 08:48:28 +02:00
Ingo Molnar
429eb05101 Merge branch 'perf/urgent' into tools/perf/build 2013-10-08 11:51:31 +02:00
Namhyung Kim
b314e5cfd1 perf session: Fix infinite loop on invalid perf.data file
perf-record updates the header in the perf.data file at termination.
Without this update perf-report (and other processing built-ins) it
caused an infinite loop when perf report (or something like) called.

This is because the algorithm in __perf_session__process_events()
depends on the data_size which is read from file header.  Use file size
directly instead in this case to do the best-effort processing.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: David Ahern <dsahern@gmail.com>
Tested-by: Sonny Rao <sonnyrao@chromium.org>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Sonny Rao <sonnyrao@chromium.org>
Link: http://lkml.kernel.org/r/1380529188-27193-1-git-send-email-namhyung@kernel.org
Signed-off-by: David Ahern <dsahern@gmail.com>
[ Reworded warning as per Ingo Molnar suggestion, replaces 'perf.data'
  with session->filename, to precisely identify the data file involved ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-04 15:17:46 -03:00
Arnaldo Carvalho de Melo
027a7e86a1 perf tools: Fix installation of libexec components
Doing a fresh install on a user home directory needs to first make sure
that the ~/libexec/perf-core/ directory is present so that
'perf-archive' like scripts, 'perf test' attr config files and 'perf
script' scripts can be installed.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-z7ryi3r1b9dn9smbfnab0fdc@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-04 15:16:05 -03:00
Masami Hiramatsu
e08cfd4bda perf probe: Fix to find line information for probe list
Fix to find the correct (as much as possible) line information for
listing probes. Without this fix, perf probe --list action will show
incorrect line information as below;

  probe:getname_flags  (on getname_flags@ksrc/linux-3/fs/namei.c)
  probe:getname_flags_1 (on getname:-89@x86/include/asm/current.h)
  probe:getname_flags_2 (on user_path_at_empty:-2054@x86/include/asm/current.h)

The minus line number is obviously wrong, and current.h is not related
to the probe point. Deeper investigation discovered that there were 2
issues related to this bug, and minor typos too.

The 1st issue is the rack of considering about nested inlined functions,
which causes the wrong (relative) line number.

The 2nd issue is that the dwarf line info is not correct at those
points. It points 14th line of current.h.

Since it seems that the line info includes somewhat unreliable
information, this fixes perf to try to find correct line information
from both of debuginfo and line info as below.

1) Probe address is the entry of a function instance

  In this case, the line is set as the function declared line.

2) Probe address is the entry of an expanded inline function block

  In this case, the line is set as the function call-site line.
  This means that the line number is relative from the entry line
  of caller function (which can be an inlined function if nested)

3) Probe address is inside a function instance or an expanded
   inline function block

  In this case, perf probe queries the line number from lineinfo
  and verify the function declared file is same as the file name
  queried from lineinfo.

  If the file name is different, it is a failure case. The probe
  address is shown as symbol+offset.

4) Probe address is not in the any function instance

  This is a failure case, the probe address is shown as
  symbol+offset.

With this fix, perf probe -l shows correct probe lines as below;

  probe:getname_flags  (on getname_flags@ksrc/linux-3/fs/namei.c)
  probe:getname_flags_1 (on getname:2@ksrc/linux-3/fs/namei.c)
  probe:getname_flags_2 (on user_path_at_empty:4@ksrc/linux-3/fs/namei.c)

Changes at v2:
 - Fix typos in the function comments. (Thanks to Namhyung Kim)
 - Use die_find_top_inlinefunc instead of die_find_inlinefunc_next.

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20130930092144.1693.11058.stgit@udc4-manage.rcp.hitachi.co.jp
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-04 15:16:05 -03:00
Arnaldo Carvalho de Melo
47a92b8286 perf tools: Fix libaudit test
In ubuntu systems the libaudit test was always failing due to the
newline in the printf call not being escaped, which somehow didn't
prevented the test from working as expected on other systems, such
as fedora18.

Fix it by removing the newline, as this is just a test, that program is
just a compile test.

The error messages, obtained using 'make V=1':

    CHK libaudit
<stdin>: In function ‘main’:
<stdin>:5:9: error: missing terminating " character [-Werror]
<stdin>:5:2: error: missing terminating " character
<stdin>:6:1: error: missing terminating " character [-Werror]
<stdin>:6:1: error: missing terminating " character
<stdin>:7:2: error: expected expression before ‘return’
<stdin>:8:1: error: expected ‘;’ before ‘}’ token
cc1: all warnings being treated as errors
config/Makefile:241: No libaudit.h found, disables 'trace' tool, please install audit-libs-devel or libaudit-dev

After this change the test works as expected in all systems tested and the
'trace' tool is built when the needed devel packages are installed.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-0trw8qs9hafeopc0vj1sicay@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-04 15:16:05 -03:00
Namhyung Kim
d20a47e70b perf stat: Set child_pid after perf_evlist__prepare_workload()
The commit acf2892270 ("perf stat: Use perf_evlist__prepare/
start_workload()") converted to use the function but forgot to update
child_pid.  Fix it.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1380531671-28076-1-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-04 15:16:05 -03:00
David Ahern
6adb0b0ae2 perf tools: Add default handler for mmap2 events
Commands that do not implement an mmap2 handler should at least not die
with a segfault when processing files with MMAP2 events.

Signed-off-by: David Ahern <dsahern@gmail.com>
Link: http://lkml.kernel.org/r/1379900700-5186-5-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-10-04 15:16:04 -03:00
Andi Kleen
475eeab9f3 tools/perf: Add support for record transaction flags
Add support for recording and displaying the transaction flags.
They are essentially a new sort key. Also display them
in a nice way to the user.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1379688044-14173-6-git-send-email-andi@firstfloor.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-04 10:06:12 +02:00
Andi Kleen
0126d493b6 tools/perf/record: Add abort_tx,no_tx,in_tx branch filter options to perf record -j
Make perf record -j aware of the new in_tx,no_tx,abort_tx branch qualifiers.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1379688044-14173-5-git-send-email-andi@firstfloor.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-04 10:06:10 +02:00
Andi Kleen
f5d05bcec4 tools/perf: Support sorting by in_tx or abort branch flags
Extend the perf branch sorting code to support sorting by in_tx
or abort_tx qualifiers. Also print out those qualifiers.

This also fixes up some of the existing sort key documentation.

We do not support no_tx here, because it's simply not showing
the in_tx flag.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1379688044-14173-4-git-send-email-andi@firstfloor.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-04 10:06:09 +02:00
Andi Kleen
4cabc3d1cb tools/perf/stat: Add perf stat --transaction
Add support to perf stat to print the basic transactional execution statistics:
Total cycles, Cycles in Transaction, Cycles in aborted transsactions
using the in_tx and in_tx_checkpoint qualifiers.
Transaction Starts and Elision Starts, to compute the average transaction
length.

This is a reasonable overview over the success of the transactions.

Also support architectures that have a transaction aborted cycles
counter like POWER8. Since that is awkward to handle in the kernel
abstract handle both cases here.

Enable with a new --transaction / -T option.

This requires measuring these events in a group, since they depend on each
other.

This is implemented by using TM sysfs events exported by the kernel

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Arnaldo Carvalho de Melo <acme@infradead.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1377128846-977-5-git-send-email-andi@firstfloor.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-04 10:06:07 +02:00
Andi Kleen
354cc40e3b tools/perf: Fix sorting for 64bit entries
Some of the node comparisons in hist.c dropped the upper
32bit by using an int variable to store the compare
result. This broke various 64bit fields, causing
incorrect collapsing (found for the TSX transaction field)

Just use int64_t always.

Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1380637335-30110-1-git-send-email-andi@firstfloor.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-04 10:06:06 +02:00
Jean Pihet
ab255e7220 perf: parse the .debug_frame section in case .eh_frame is not present
On ARM the debug info is not present in the .eh_frame sections but
in .debug_frame instead, in dwarf format.
Use libunwind to load and parse the debug info.

Dependencies:
 . if present, libunwind >= 1.1 is needed to prevent a segfault when
   parsing the dwarf info,
 . libunwind needs to be configured with --enable-debug-frame. Note:
   --enable-debug-frame is automatically selected on ARM.

Acked-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Jean Pihet <jean.pihet@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2013-09-30 16:42:12 +01:00
Jean Pihet
405ffbd498 perf tools: Check libunwind for availability of dwarf parsing feature
The newly added dwarf unwinding feature [1] requires:
. a recent version (>= 1.1) of libunwind,
. libunwind to be configured with --enable-debug-frame.

[1] http://www.spinics.net/lists/kernel/msg1598951.html

Add the corresponding API tests in the feature check list.

Acked-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Jean Pihet <jean.pihet@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2013-09-30 16:41:59 +01:00
Will Deacon
7495f3742d ARM: perf: wire up perf_regs and unwind support for ARM
This patch hooks in the perf_regs and libunwind code for ARM.

Cc: Jean Pihet <jean.pihet@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2013-09-30 16:41:55 +01:00
Greg Kroah-Hartman
d717349368 Merge 3.12-rc3 into char-misc-next
We need/want the mei fixes in here so we can apply other updates that
are depending on them.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-29 18:27:03 -07:00
Ingo Molnar
14951f22f1 Revert "perf symbols: Demangle cloned functions"
This reverts commit de95ab5364.

Markus Trippelsdorf reported that this commit broke 'perf top':

 > I just see a gray screen with no text at all. Sometimes the
 > following error messages are printed:
 >
 >  *** Error in `perf': invalid fastbin entry (free): 0x00000000029b18c0
 >  ***
 >  *** Error in `perf': malloc(): memory corruption (fast): 0x0000000000ee0b10 ***

While this code is fixable, the commit itself fails on several levels:

 - it should have been a separate helper function
 - why the heck does it do strchr() twice
 - it casts a const char * over into char *
 - sloppy style
 - it's not even a regression fix!

So lets revert it and re-try the patch in v3.13.

Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-09-29 16:12:54 +02:00
Olaf Hering
269ce62bbc Tools: hv: use single send+recv buffer
send_buffer is used only once during registration. To reduce runtime
memory usage reuse the recv_buffer for registration. Also use
NLMSG_LENGTH instead of NLMSG_HDRLEN to take alignment into account.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 12:03:31 -07:00
Olaf Hering
58125210ab Tools: hv: cache FQDN in kvp_daemon to avoid timeouts
kvp_daemon does some operations which take an unpredicable amount of
time. In addition the kernel driver gives the kvp_daemon a 5 second
timeout to respond to message from the host. If an operation such as
getaddrinfo takes a long time and the timeout triggers then netlink
errors occour. As a result of such errors the daemon just terminates and
the service becomes unavailable.

Idendifying and fixing these shortcomings in the kernel-userland
communication protocol will be done in separate patches. This change
fixes just one obvious timeout bug.

Update kvp_get_domain_name to not return a value, better diagnostic for
the consumer of the hostname string, remove trailing newline in error
case, use snprintf to not overrun output buffer, get hostname only once
and return the cached result.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 12:03:31 -07:00
Andi Kleen
de95ab5364 perf symbols: Demangle cloned functions
The libbfd C++ demangler doesn't seem to deal with cloned functions,
like symbol.clone.NUM.

Just strip the dot part before demangling and add it back later.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/1378998998-10802-1-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-09-25 12:58:21 -03:00
Adrian Hunter
aa7fe3b0c4 perf machine: Fix path unpopulated in machine__create_modules()
In machine__create_modules() the 'path' char array was used in a call to
symbol__restricted_filename() without always being populated.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1379845338-29637-2-git-send-email-adrian.hunter@intel.com
[ Split patch removing unrelated conversion of sprintf to snprintf to perf/core ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-09-25 12:48:24 -03:00
David Ahern
6d19912c9b perf tools: Explicitly add libdl dependency
Fixes compile failure on Fedora 12.

Signed-off-by: David Ahern <dsahern@gmail.com>
Link: http://lkml.kernel.org/r/1379900700-5186-3-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-09-25 12:39:27 -03:00
Masami Hiramatsu
576b523721 perf probe: Fix probing symbols with optimization suffix
Fix perf probe to probe on some symbols which have some optimzation
suffixes, e.g. ".part", ".isra", and ".constprop".

To fix this issue, instead of using the DIE name, perf probe uses the
symbol name found by dwfl_module_addrsym().

This also involves a perf probe --vars operation update which now shows
the symbol name instead of the DIE name.

Without this patch, putting a probe on an inlined function which was
compiled with a suffixed symbol will fail like this:

  $ perf probe -v getname_flags
  probe-definition(0): getname_flags
  symbol:getname_flags file:(null) line:0 offset:0 return:0 lazy:(null)
  0 arguments
  Looking at the vmlinux_path (6 entries long)
  Using /lib/modules/3.11.0+/build/vmlinux for symbols
  found inline addr: 0xffffffff8119bb70
  Probe point found: getname_flags+0
  found inline addr: 0xffffffff8119bcb6
  Probe point found: getname+6
  found inline addr: 0xffffffff811a06a6
  Probe point found: user_path_at_empty+6
  find 3 probe_trace_events.
  Opening /sys/kernel/debug//tracing/kprobe_events write=1
  Added new events:
  Writing event: p:probe/getname_flags getname_flags+0
  Failed to write event: No such file or directory
    Error: Failed to add events. (-1)

Because the debuginfo knows only the original (non suffix) symbol name,
it uses the original symbol for probe address but the kernel (kallsyms)
knows only suffixed symbol.  Then, the kernel rejects that original
symbol.

This patch uses dwfl_module_addrsym() to get the correct (suffixed)
symbol from symtab when a probe point is found.

Reported-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20130925131616.31632.46658.stgit@udc4-manage.rcp.hitachi.co.jp
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-09-25 12:27:31 -03:00
David Ahern
384c671e33 perf trace: Add mmap2 handler
5c5e854b changed perf_event__synthesize_mmap_events to generate MMAP2
events. Since perf-trace does not have a handler for it it dies with a
segfault when trying to process files:

perf trace -i /tmp/perf.data
Segmentation fault

Signed-off-by: David Ahern <dsahern@gmail.com>
Link: http://lkml.kernel.org/r/1379900700-5186-4-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-09-24 14:15:51 -03:00
Jiri Olsa
4921e32024 perf kmem: Make it work again on non NUMA machines
The commit '2814eb0 perf kmem: Remove die() calls' disabled 'perf kmem'
command for machines without numa support. It made the command fail if
'/sys/devices/system/node' dir wasn't found.

Skipping the numa based initialization in case the directory is not
found and continue execution.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1379003976-5839-5-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-09-24 14:13:46 -03:00
Peter Zijlstra
fa73158710 perf: Fix capabilities bitfield compatibility in 'struct perf_event_mmap_page'
Solve the problems around the broken definition of perf_event_mmap_page::
cap_usr_time and cap_usr_rdpmc fields which used to overlap, partially
fixed by:

  860f085b74 ("perf: Fix broken union in 'struct perf_event_mmap_page'")

The problem with the fix (merged in v3.12-rc1 and not yet released
officially), noticed by Vince Weaver is that the new behavior is
not detectable by new user-space, and that due to the reuse of the
field names it's easy to mis-compile a binary if old headers are used
on a new kernel or new headers are used on an old kernel.

To solve all that make this change explicit, detectable and self-contained,
by iterating the ABI the following way:

 - Always clear bit 0, and rename it to usrpage->cap_bit0, to at least not
   confuse old user-space binaries. RDPMC will be marked as unavailable
   to old binaries but that's within the ABI, this is a capability bit.

 - Rename bit 1 to ->cap_bit0_is_deprecated and always set it to 1, so new
   libraries can reliably detect that bit 0 is deprecated and perma-zero
   without having to check the kernel version.

 - Use bits 2, 3, 4 for the newly defined, correct functionality:

	cap_user_rdpmc		: 1, /* The RDPMC instruction can be used to read counts */
	cap_user_time		: 1, /* The time_* fields are used */
	cap_user_time_zero	: 1, /* The time_zero field is used */

 - Rename all the bitfield names in perf_event.h to be different from the
   old names, to make sure it's not possible to mis-compile it
   accidentally with old assumptions.

The 'size' field can then be used in the future to add new fields and it
will act as a natural ABI version indicator as well.

Also adjust tools/perf/ userspace for the new definitions, noticed by
Adrian Hunter.

Reported-by: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Also-Fixed-by: Adrian Hunter <adrian.hunter@intel.com>
Link: http://lkml.kernel.org/n/tip-zr03yxjrpXesOzzupszqglbv@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-09-20 09:45:11 +02:00
Ingo Molnar
24e31f0bef perf/urgent fixes:
. Check for SIGINT in more loops, allowing tools such as 'perf report' to
   react faster to control+C.
 
 . Fix objdump line parsing offset validation in the annotate code,
   from Adrian Hunter.
 
 . Fix buildid cache handling of kallsyms with kcore, from Adrian Hunter.
 
 . Fix compile with libelf without get_phdrnum, from Adrian Hunter.
 
 . Sharpen the libaudit dependencies test, refusing to build with older
   libraries that doesn't have all the functions used by 'perf trace", fix
   from Ingo Molnar.
 
 . Fill in new definitions for madvise()/mmap() flags to fix the build in
   older systems, from Ingo Molnar.
 
 . Fix old GCC build error in older systems in the kallsyms parsing code in
   trace-event-parse.c, from Ingo Molnar.
 
 . Ignore DWARF declaration tags, allowing, for instance, that the
 
     $ perf probe -L getname
 
   command succeeds in showing the source code for the 'getname' kernel
   function, telling in which lines probes can be inserted, fix from
   Masami Hiramatsu.
 
 . Fix linux/magic.h related build breakage in some systems, fix from
   Vinson Lee.
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

Pull perf/urgent fixes from Arnaldo Carvalho de Melo:

 * Check for SIGINT in more loops, allowing tools such as 'perf report' to
   react faster to Ctrl+C, from Arnaldo Carvalho de Melo.

 * Fix objdump line parsing offset validation in the annotate code,
   from Adrian Hunter.

 * Fix buildid cache handling of kallsyms with kcore, from Adrian Hunter.

 * Fix compile with libelf without get_phdrnum, from Adrian Hunter.

 * Sharpen the libaudit dependencies test, refusing to build with older
   libraries that doesn't have all the functions used by 'perf trace", fix
   from Ingo Molnar.

 * Fill in new definitions for madvise()/mmap() flags to fix the build in
   older systems, from Ingo Molnar.

 * Fix old GCC build error in older systems in the kallsyms parsing code in
   trace-event-parse.c, from Ingo Molnar.

 * Ignore DWARF declaration tags, allowing, for instance, that the

     $ perf probe -L getname

   command succeeds in showing the source code for the 'getname' kernel
   function, telling in which lines probes can be inserted, fix from
   Masami Hiramatsu.

 * Fix linux/magic.h related build breakage in some systems, fix from
   Vinson Lee.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-09-20 06:49:29 +02:00
Vinson Lee
ce7eebe5c3 tools lib lk: Uninclude linux/magic.h in debugfs.c
The compilation only looks for linux/magic.h from the default include
paths, which does not include the source tree. This results in a build
error if linux/magic.h is not available or not installed.

For example, this build error occurs on CentOS 5.

$ make -C tools/lib/lk V=1
[...]
gcc -o debugfs.o -c -ggdb3 -Wall -Wextra -std=gnu99 -Werror -O6
-D_FORTIFY_SOURCE=2 -Wbad-function-cast -Wdeclaration-after-statement
-Wformat-security -Wformat-y2k -Winit-self -Wmissing-declarations
-Wmissing-prototypes -Wnested-externs -Wno-system-headers
-Wold-style-definition -Wpacked -Wredundant-decls -Wshadow
-Wstrict-aliasing=3 -Wstrict-prototypes -Wswitch-default -Wswitch-enum
-Wundef -Wwrite-strings -Wformat  -fPIC  -D_LARGEFILE64_SOURCE
-D_FILE_OFFSET_BITS=64 debugfs.c
debugfs.c:8:25: error: linux/magic.h: No such file or directory

The only symbol from linux/magic.h needed by debugfs.c is DEBUGFS_MAGIC,
and that is already defined in debugfs.h. linux/magic.h isn't providing
any extra symbols and can unincluded. This is similar to the approach by
perf, which has its own magic.h wrapper at
tools/perf/util/include/linux/magic.h

Signed-off-by: Vinson Lee <vlee@twitter.com>
Acked-by: Borislav Petkov <bp@suse.de>
Cc: Borislav Petkov <bp@suse.de>
Cc: Vinson Lee <vlee@freedesktop.org>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/1379546200-17028-1-git-send-email-vlee@freedesktop.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-09-19 15:08:53 -03:00
Ingo Molnar
0f9654296e perf tools: Fix old GCC build error in trace-event-parse.c:parse_proc_kallsyms()
Old GCC (4.1) does not see through the code flow of parse_proc_kallsyms()
and gets confused about the status of 'fmt':

 util/trace-event-parse.c: In function ‘parse_proc_kallsyms’:
 util/trace-event-parse.c:189: warning: ‘fmt’ may be used uninitialized in this function
 make: *** [util/trace-event-parse.o] Error 1

Help out GCC by initializing 'fmt' to NULL.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20130912131649.GC23826@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-09-19 15:08:47 -03:00
Masami Hiramatsu
0dbb1cac1d perf probe: Fix finder to find lines of given function
The commit ba28c59bc9 fixed a declaration
entry bug in probe_point_search_cb().  There are same bugs in line
finder and call_probe_finder().  This introduces a new dwarf utility
function to determine given DIE is a function definition, not
declaration.

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Prashanth Nageshappa <prashanth@linux.vnet.ibm.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: yrl.pp-manager.tt@hitachi.com
Link: http://lkml.kernel.org/r/20120423032435.8737.80064.stgit@localhost.localdomain
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2013-09-19 11:35:05 -03:00