raspi/linux
1
0
Fork 1
mirror of https://github.com/raspberrypi/linux.git synced 2025-12-24 11:02:51 +00:00
Code Issues Projects Releases Wiki Activity
1,311,309 Commits 105 Branches 108 Tags
17f7c9bc06a917d90fb8fcecb15f4fa383384685
Commit Graph

2 Commits

Author SHA1 Message Date
Arnaldo Carvalho de Melo
2df5484bbf perf tests ftrace: Add pattern check for time, count 
In 'perf ftrace profile sleep 0.1' we know that we'll have an specific
kernel function that will take a bit more than 0.1 seconds and will take
place just one time, so we can add a check for that so that we validate
more than just the presence of some functions in the profile.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Link: https://lore.kernel.org/lkml/ZrTBo7KACZeuCyLj@x1
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2024-08-08 09:59:40 -03:00
Namhyung Kim
ed5bb548cc perf test: Add a new shell test for perf ftrace 
$ sudo ./perf test ftrace -vv
   86: perf ftrace tests:
  --- start ---
  test child forked, pid 1772223
  perf ftrace list test
  syscalls for sleep:
  __x64_sys_nanosleep
  __ia32_sys_nanosleep
  __x64_sys_clock_nanosleep
  __ia32_sys_clock_nanosleep
  perf ftrace list test  [Success]
  perf ftrace trace test
  # tracer: function_graph
  #
  # CPU  DURATION                  FUNCTION CALLS
  # |     |   |                     |   |   |   |
   0)               |  __x64_sys_clock_nanosleep() {
   0)               |    common_nsleep() {
   0)               |      hrtimer_nanosleep() {
   0)               |        do_nanosleep() {
  perf ftrace trace test  [Success]
  perf ftrace latency test
  target function: __x64_sys_clock_nanosleep
  #   DURATION     |      COUNT | GRAPH                                          |
      32 - 64   ms |          1 | ############################################## |
  perf ftrace latency test  [Success]
  perf ftrace profile test
  # Total (us)   Avg (us)   Max (us)      Count   Function
    100136.400 100136.400 100136.400          1   __x64_sys_clock_nanosleep
    100135.200 100135.200 100135.200          1   common_nsleep
    100134.700 100134.700 100134.700          1   hrtimer_nanosleep
    100133.700 100133.700 100133.700          1   do_nanosleep
    100130.600 100130.600 100130.600          1   schedule
       166.868     55.623     80.299          3   scheduler_tick
         5.926      5.926      5.926          1   native_smp_send_reschedule
       301.941    301.941    301.941          1   __x64_sys_execve
       295.786    295.786    295.786          1   do_execveat_common.isra.0
        71.397     35.699     46.403          2   bprm_execve
         2.519      1.260      1.547          2   sched_mm_cid_before_execve
         1.098      0.549      0.686          2   sched_mm_cid_after_execve
  perf ftrace profile test  [Success]
  ---- end(0) ----
   86: perf ftrace tests                                               : Ok

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Link: https://lore.kernel.org/r/20240808044954.1775333-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 2024-08-08 09:41:35 -03:00