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d01f4e8db2
linux/tools/perf
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Namhyung Kim d01f4e8db2 perf ftrace: Introduce new 'ftrace' tool 
The 'perf ftrace' command is a simple wrapper of kernel's ftrace
functionality.  It only supports single thread tracing currently and
just reads trace_pipe in text and then write it to stdout.

Committer notes:

Testing it:

  # perf ftrace -f function_graph usleep 123456
  <SNIP>
  2)               |  SyS_nanosleep() {
  2)               |    _copy_from_user() {
  <SNIP>
  2)   0.900 us    |      }
  2)   1.354 us    |    }
  2)               |    hrtimer_nanosleep() {
  2)   0.062 us    |      __hrtimer_init();
  2)               |      do_nanosleep() {
  2)               |        hrtimer_start_range_ns() {
  <SNIP>
  2)   5.025 us    |        }
  2)               |        schedule() {
  2)   0.125 us    |          rcu_note_context_switch();
  2)   0.057 us    |          _raw_spin_lock();
  2)               |          deactivate_task() {
  2)   0.369 us    |            update_rq_clock.part.77();
  2)               |            dequeue_task_fair() {
  <SNIP>
  2) + 22.453 us   |            }
  2) + 23.736 us   |          }
  2)               |          pick_next_task_fair() {
  <SNIP>
  2) + 47.167 us   |          }
  2)               |          pick_next_task_idle() {
  <SNIP>
  2)   4.462 us    |          }
  ------------------------------------------
  2)  usleep-20387  =>    <idle>-0
  ------------------------------------------

  2)   0.806 us    |  switch_mm_irqs_off();
  ------------------------------------------
  2)    <idle>-0    =>  usleep-20387
  ------------------------------------------

  2)   0.151 us    |          finish_task_switch();
  2) @ 123597.2 us |        }
  2)   0.037 us    |        _cond_resched();
  2)               |        hrtimer_try_to_cancel() {
  2)   0.064 us    |          hrtimer_active();
  2)   0.353 us    |        }
  2) @ 123605.3 us |      }
  2) @ 123606.2 us |    }
  2) @ 123608.3 us |  } /* SyS_nanosleep */
  2)               |  __do_page_fault() {
 <SNIP>

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jeremy Eder <jeder@redhat.com>
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>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/n/tip-r1hgmsj4dxny8arn3o9mw512@git.kernel.org
[ Various foward port fixes, add man page ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-01-26 11:43:01 -03:00
..
arch perf probe: Fix wrong register name for arm64 2017-01-26 11:42:43 -03:00
bench perf bench futex: Fix lock-pi help string 2016-12-20 09:37:40 -03:00
Documentation perf ftrace: Introduce new 'ftrace' tool 2017-01-26 11:43:01 -03:00
jvmti perf kvmti: Remove unused Makefile file 2016-11-14 12:42:56 -03:00
pmu-events perf vendor events: Support couple more POWER8 PVRs in mapfile 2016-10-17 13:39:47 -03:00
python perf python: Add tracepoint example 2016-07-12 16:23:35 -03:00
scripts perf/core improvements and fixes: 2016-08-04 11:02:38 +02:00
tests tools lib bpf: Add libbpf_get_error() 2017-01-26 11:42:58 -03:00
trace perf trace: Check if MAP_32BIT is defined (again) 2016-12-20 09:37:40 -03:00
ui perf hists browser: Add e/c hotkeys to expand/collapse callchain for current entry 2017-01-20 13:37:26 -03:00
util perf util: Add more debug message on failure path 2017-01-26 11:43:00 -03:00
.gitignore perf tools: Add arch/*/include/generated/ to .gitignore 2016-05-30 12:41:46 -03:00
Build perf ftrace: Introduce new 'ftrace' tool 2017-01-26 11:43:01 -03:00
builtin-annotate.c perf annotate: Add branch stack / basic block 2016-09-08 13:44:03 -03:00
builtin-bench.c
builtin-buildid-cache.c tools: Introduce str_error_r() 2016-07-12 15:19:47 -03:00
builtin-buildid-list.c
builtin-c2c.c perf c2c report: Coalesce by default only by pid,iaddr 2017-01-20 16:52:56 -03:00
builtin-config.c perf config: Mark where are config items from (user or system) 2016-11-14 13:10:37 -03:00
builtin-data.c perf data ctf: Add '--all' option for 'perf data convert' 2016-06-28 10:54:57 -03:00
builtin-diff.c perf hists: Add support for header span 2016-08-23 15:37:33 -03:00
builtin-evlist.c perf evlist: Rename for_each() macros to for_each_entry() 2016-06-23 11:26:15 -03:00
builtin-ftrace.c perf ftrace: Introduce new 'ftrace' tool 2017-01-26 11:43:01 -03:00
builtin-help.c perf kallsyms: Introduce tool to look for extended symbol information on the running kernel 2017-01-11 16:48:01 -03:00
builtin-inject.c perf symbols: Remove symbol_filter_t machinery 2016-09-05 11:14:50 -03:00
builtin-kallsyms.c perf kallsyms: Introduce tool to look for extended symbol information on the running kernel 2017-01-11 16:48:01 -03:00
builtin-kmem.c perf kmem: Add option to specify time window of interest 2016-12-01 13:03:02 -03:00
builtin-kvm.c perf kvm: Use NSEC_PER_USEC 2016-08-23 15:37:33 -03:00
builtin-list.c perf list: Support long jevents descriptions 2016-10-03 21:35:47 -03:00
builtin-lock.c
builtin-mem.c perf mem: Fix --all-user/--all-kernel options 2016-12-15 16:25:45 -03:00
builtin-probe.c perf probe: Ignore vmlinux Build-id when offline vmlinux given 2016-09-01 12:42:22 -03:00
builtin-record.c perf record: Add switch-output time option argument 2017-01-11 16:48:02 -03:00
builtin-report.c perf tools: Remove some needless __maybe_unused 2016-12-15 16:25:45 -03:00
builtin-sched.c perf sched timehist: Show total wait times for summary 2017-01-17 11:36:44 -03:00
builtin-script.c perf script: Also allow forcing reading of non-root owned files by root 2017-01-16 14:59:15 -03:00
builtin-stat.c perf tools: Remove some needless __maybe_unused 2016-12-15 16:25:45 -03:00
builtin-timechart.c perf timechart: Use NSEC_PER_U?SEC 2016-08-23 15:37:33 -03:00
builtin-top.c perf annotate: Start supporting cross arch annotation 2016-11-17 17:12:50 -03:00
builtin-trace.c perf trace: Allow specifying list of syscalls and events in -e/--expr/--event 2017-01-11 16:48:01 -03:00
builtin-version.c
builtin.h perf ftrace: Introduce new 'ftrace' tool 2017-01-26 11:43:01 -03:00
check-headers.sh perf tools: Move headers check into bash script 2016-12-15 16:25:44 -03:00
command-list.txt perf ftrace: Introduce new 'ftrace' tool 2017-01-26 11:43:01 -03:00
CREDITS
design.txt
Makefile
Makefile.config perf tools: Remove unneccessary feature-dwarf warning 2017-01-16 14:59:15 -03:00
Makefile.perf perf jvmti: Create libdir directory before installing libperf-jvmti.so 2017-01-11 16:48:00 -03:00
MANIFEST tools lib: Add for_each_clear_bit macro 2016-10-24 11:07:33 -03:00
perf-archive.sh
perf-completion.sh
perf-read-vdso.c
perf-sys.h perf powerpc: Fix build-test failure 2016-09-08 13:44:07 -03:00
perf-with-kcore.sh
perf.c perf ftrace: Introduce new 'ftrace' tool 2017-01-26 11:43:01 -03:00
perf.h perf evsel: Allow to ignore missing pid 2016-12-15 16:25:46 -03:00