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27702bcfe8
linux/tools/perf
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Arnaldo Carvalho de Melo 27702bcfe8 perf trace: Support syscall name globbing 
So now we can use:

  # perf trace -e pkey_*
   532.784 ( 0.006 ms): pkey/16018 pkey_alloc(init_val: DISABLE_WRITE) = -1 EINVAL Invalid argument
   532.795 ( 0.004 ms): pkey/16018 pkey_mprotect(start: 0x7f380d0a6000, len: 4096, prot: READ|WRITE, pkey: -1) = 0
   532.801 ( 0.002 ms): pkey/16018 pkey_free(pkey: -1                ) = -1 EINVAL Invalid argument
  ^C[root@jouet ~]#

Or '-e epoll*', '-e *msg*', etc.

Combining syscall names with perf events, tracepoints, etc, continues to
be valid, i.e. this is possible:

  # perf probe -L sys_nanosleep
  <SyS_nanosleep@/home/acme/git/linux/kernel/time/hrtimer.c:0>
      0  SYSCALL_DEFINE2(nanosleep, struct timespec __user *, rqtp,
                        struct timespec __user *, rmtp)
         {
                struct timespec64 tu;

      5         if (get_timespec64(&tu, rqtp))
      6                 return -EFAULT;

                if (!timespec64_valid(&tu))
      9                 return -EINVAL;

     11         current->restart_block.nanosleep.type = rmtp ? TT_NATIVE : TT_NONE;
     12         current->restart_block.nanosleep.rmtp = rmtp;
     13         return hrtimer_nanosleep(&tu, HRTIMER_MODE_REL, CLOCK_MONOTONIC);
         }

  # perf probe my_probe="sys_nanosleep:12 rmtp"
  Added new event:
    probe:my_probe       (on sys_nanosleep:12 with rmtp)

  You can now use it in all perf tools, such as:

	perf record -e probe:my_probe -aR sleep 1

  #
  # perf trace -e probe:my_probe/max-stack=5/,*sleep sleep 1
     0.427 ( 0.003 ms): sleep/16690 nanosleep(rqtp: 0x7ffefc245090) ...
     0.430 (         ): probe:my_probe:(ffffffffbd112923) rmtp=0)
                                       sys_nanosleep ([kernel.kallsyms])
                                       do_syscall_64 ([kernel.kallsyms])
                                       return_from_SYSCALL_64 ([kernel.kallsyms])
                                       __nanosleep_nocancel (/usr/lib64/libc-2.25.so)
     0.427 (1000.208 ms): sleep/16690  ... [continued]: nanosleep()) = 0
  #

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-elycoi8wy6y0w9dkj7ox1mzz@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-09-01 14:45:58 -03:00
..
arch perf report: Fix module symbol adjustment for s390x 2017-08-11 16:06:32 -03:00
bench perf tools: Use __maybe_unused consistently 2017-06-19 15:27:06 -03:00
Documentation perf trace: Support syscall name globbing 2017-09-01 14:45:58 -03:00
jvmti perf jit: fix typo: "incalid" -> "invalid" 2017-06-27 11:55:06 -03:00
pmu-events perf vendor events: Add Skylake server uncore event list 2017-08-22 12:25:11 -03:00
python perf python: Add tracepoint example 2016-07-12 16:23:35 -03:00
scripts perf script python: Add support for sqlite3 to call-graph-from-sql.py 2017-08-15 17:03:38 -03:00
tests perf test: Add test cases for new data source encoding 2017-08-22 13:23:10 -03:00
trace perf trace beauty: Beautify pkey_{alloc,free,mprotect} arguments 2017-08-28 16:44:47 -03:00
ui perf report: Calculate the average cycles of iterations 2017-08-30 10:03:27 -03:00
util perf syscalltbl: Support glob matching on syscall names 2017-09-01 14:45:48 -03:00
.gitignore perf tools: Ignore generated files pmu-events/{jevents,pmu-events.c} for git 2017-03-13 10:59:36 -03:00
Build perf trace: Only build tools/perf/trace/beauty/ when building 'perf trace' 2017-07-18 23:13:52 -03:00
builtin-annotate.c perf annotate browser: Support --show-nr-samples option 2017-08-18 11:15:09 -03:00
builtin-bench.c perf tools: Remove unused 'prefix' from builtin functions 2017-03-27 11:58:09 -03:00
builtin-buildid-cache.c perf buildid-cache: Cache debuginfo 2017-07-18 23:14:11 -03:00
builtin-buildid-list.c perf tools: Include errno.h where needed 2017-04-19 13:01:51 -03:00
builtin-c2c.c perf tools: Replace error() with pr_err() 2017-06-27 11:22:31 -03:00
builtin-config.c tools include: Adopt strstarts() from the kernel 2017-07-20 15:46:10 -03:00
builtin-data.c perf data: Add doc when no conversion support compiled 2017-07-28 16:30:45 -03:00
builtin-diff.c perf config: Do not die when parsing u64 or int config values 2017-06-27 11:44:58 -03:00
builtin-evlist.c perf tools: Remove unused 'prefix' from builtin functions 2017-03-27 11:58:09 -03:00
builtin-ftrace.c tools include: Adopt strstarts() from the kernel 2017-07-20 15:46:10 -03:00
builtin-help.c tools include: Adopt strstarts() from the kernel 2017-07-20 15:46:10 -03:00
builtin-inject.c perf tools: Add feature header record to pipe-mode 2017-07-18 23:14:36 -03:00
builtin-kallsyms.c perf tools: Including missing inttypes.h header 2017-04-19 13:01:46 -03:00
builtin-kmem.c mm, tree wide: replace __GFP_REPEAT by __GFP_RETRY_MAYFAIL with more useful semantic 2017-07-12 16:26:03 -07:00
builtin-kvm.c perf tools: Remove poll.h and wait.h from util.h 2017-04-24 13:43:34 -03:00
builtin-list.c perf tools: Remove unused 'prefix' from builtin functions 2017-03-27 11:58:09 -03:00
builtin-lock.c perf tools: Include errno.h where needed 2017-04-19 13:01:51 -03:00
builtin-mem.c perf tools: Use just forward declarations for struct thread where possible 2017-04-24 13:43:35 -03:00
builtin-probe.c perf buildid-cache: Support binary objects from other namespaces 2017-07-18 23:14:11 -03:00
builtin-record.c perf tools: Add feature header record to pipe-mode 2017-07-18 23:14:36 -03:00
builtin-report.c perf report: Group stat values on global event id 2017-08-28 16:44:44 -03:00
builtin-sched.c perf tools: Replace error() with pr_err() 2017-06-27 11:22:31 -03:00
builtin-script.c perf script: Remove some bogus error handling 2017-07-25 22:43:17 -03:00
builtin-stat.c perf stat: Use group read for event groups 2017-07-26 14:25:44 -03:00
builtin-timechart.c perf tools: Use just forward declarations for struct thread where possible 2017-04-24 13:43:35 -03:00
builtin-top.c perf top: Support lookup of symbols in other mount namespaces. 2017-07-25 22:43:16 -03:00
builtin-trace.c perf trace: Support syscall name globbing 2017-09-01 14:45:58 -03:00
builtin-version.c perf tools: Remove string.h, unistd.h and sys/stat.h from util.h 2017-04-24 13:43:33 -03:00
builtin.h perf tools: Remove stale prototypes from builtin.h 2017-04-24 13:43:33 -03:00
check-headers.sh tools include uapi: Grab a copy of linux/vhost.h 2017-08-01 13:04:56 -03:00
command-list.txt perf tools: Missing c2c command in command-list 2017-03-13 10:59:31 -03:00
CREDITS
design.txt
Makefile perf build tests: Do parallell builds with 'build-test' 2016-02-04 15:57:00 -03:00
Makefile.config perf tools: Robustify detection of clang binary 2017-08-28 16:44:46 -03:00
Makefile.perf perf trace beauty: Beautify pkey_{alloc,free,mprotect} arguments 2017-08-28 16:44:47 -03:00
MANIFEST tools include uapi: Grab a copy of linux/vhost.h 2017-08-01 13:04:56 -03:00
perf-archive.sh
perf-completion.sh
perf-read-vdso.c
perf-sys.h perf tools: Use default CPUINFO_PROC where it fits 2017-08-17 16:58:21 -03:00
perf-with-kcore.sh
perf.c tools include: Adopt strstarts() from the kernel 2017-07-20 15:46:10 -03:00
perf.h perf tests attr: Add test_attr__ready function 2017-07-18 23:14:15 -03:00