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  1. 01 Jun, 2014 5 commits
  2. 21 May, 2014 4 commits
  3. 16 Apr, 2014 2 commits
  4. 24 Feb, 2014 1 commit
  5. 18 Feb, 2014 1 commit
    • Jiri Olsa's avatar
      perf tools: Add call-graph option support into .perfconfig · eb853e80
      Jiri Olsa authored
      Adding call-graph option support into .perfconfig file, so it's now
      possible use call-graph option like:
      
        [top]
              call-graph = fp
      
        [record]
              call-graph = dwarf,8192
      
      Above options ONLY setup the unwind method. To enable perf record/top to
      actually use it the command line option -g/-G must be specified.
      
      The --call-graph option overloads .perfconfig setup.
      
      Assuming above configuration:
      
        $ perf record -g ls
        - enables dwarf unwind with user stack size dump 8192 bytes
      
        $ perf top -G
        - enables frame pointer unwind
      
        $ perf record --call-graph=fp ls
        - enables frame pointer unwind
      
        $ perf top --call-graph=dwarf,4096 ls
        - enables dwarf unwind with user stack size dump 4096 bytes
      Signed-off-by: default avatarJiri Olsa <jolsa@redhat.com>
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Andi Kleen <andi@firstfloor.org>
      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>
      Link: http://lkml.kernel.org/r/1391427883-13443-2-git-send-email-jolsa@redhat.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      eb853e80
  6. 15 Jan, 2014 1 commit
  7. 13 Jan, 2014 2 commits
  8. 19 Dec, 2013 3 commits
  9. 27 Nov, 2013 2 commits
  10. 14 Nov, 2013 1 commit
  11. 12 Nov, 2013 1 commit
  12. 11 Nov, 2013 3 commits
  13. 05 Nov, 2013 1 commit
    • Jiri Olsa's avatar
      perf tools: Check maximum frequency rate for record/top · 714647bd
      Jiri Olsa authored
      Adding the check for maximum allowed frequency rate defined in following
      file:
      
        /proc/sys/kernel/perf_event_max_sample_rate
      
      When we cross the maximum value we fail and display detailed error
      message with advise.
      
        $ perf record -F 3000 ls
        Maximum frequency rate (2000) reached.
        Please use -F freq option with lower value or consider
        tweaking /proc/sys/kernel/perf_event_max_sample_rate.
      
      In case user does not specify the frequency and the default value cross
      the maximum, we display warning and set the frequency value to the
      current maximum.
      
        $ perf record ls
        Lowering default frequency rate to 2000.
        Please consider tweaking /proc/sys/kernel/perf_event_max_sample_rate.
      
      Same messages are used for 'perf top'.
      Signed-off-by: default avatarJiri Olsa <jolsa@redhat.com>
      Cc: Adrian Hunter <adrian.hunter@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/1383660887-1734-4-git-send-email-jolsa@redhat.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      714647bd
  14. 04 Nov, 2013 3 commits
  15. 28 Oct, 2013 2 commits
  16. 23 Oct, 2013 1 commit
  17. 21 Oct, 2013 4 commits
  18. 09 Oct, 2013 2 commits
  19. 04 Oct, 2013 1 commit