This project is mirrored from https://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git. Pull mirroring updated .
  1. 26 Oct, 2011 1 commit
  2. 03 Jun, 2011 1 commit
    • Arnaldo Carvalho de Melo's avatar
      perf evlist: Don't die if sample_{id_all|type} is invalid · 56722381
      Arnaldo Carvalho de Melo authored
      Fixes two more cases where the python binding would not load:
      
      . Not finding die(), which it shouldn't anyway, not good to just stop the
        world because some particular perf.data file is invalid, just propagate
        the error to the caller.
      
      . Not finding perf_sample_size: fix it by moving it from event.c to evsel,
        where it belongs, as most cases are moving to operate on an evsel object.o
      
      One of the fixed problems:
      
      [root@emilia ~]# python
      >>> import perf
      Traceback (most recent call last):
        File "<stdin>", line 1, in <module>
      ImportError: /home/acme/git/build/perf/python/perf.so: undefined symbol: perf_sample_size
      >>>
      [root@emilia ~]#
      
      Cc: Frederic Weisbecker <fweisbec@gmail.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-1hkj7b2cvgbfnoizsekjb6c9@git.kernel.org
      
      
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      56722381
  3. 02 Jun, 2011 2 commits
    • David Ahern's avatar
      perf stat: clarify unsupported events from uncounted events · 2cee77c4
      David Ahern authored
      perf stat continues running even if the event list contains counters
      that are not supported. The resulting output then contains <not counted>
      for those events which gets confusing as to which events are supported,
      but not counted and which are not supported.
      
      Before:
      
      perf stat -ddd -- sleep 1
      
            Performance counter stats for 'sleep 1':
      
                0.571283 task-clock                #    0.001 CPUs utilized
                       1 context-switches          #    0.002 M/sec
                       0 CPU-migrations            #    0.000 M/sec
                     157 page-faults               #    0.275 M/sec
               1,037,707 cycles                    #    1.816 GHz
           <not counted> stalled-cycles-frontend
           <not counted> stalled-cycles-backend
                 654,499 instructions              #    0.63  insns per cycle
                 136,129 branches                  #  238.286 M/sec
           <not counted> branch-misses
           <not counted> L1-dcache-loads
           <not counted> L1-dcache-load-misses
           <not counted> LLC-loads
           <not counted> LLC-load-misses
           <not counted> L1-icache-loads
           <not counted> L1-icache-load-misses
           <not counted> dTLB-loads
           <not counted> dTLB-load-misses
           <not counted> iTLB-loads
           <not counted> iTLB-load-misses
           <not counted> L1-dcache-prefetches
           <not counted> L1-dcache-prefetch-misses
      
             1.001004836 seconds time elapsed
      
      After:
      
      perf stat -ddd -- sleep 1
      
       Performance counter stats for 'sleep 1':
      
                1.350326 task-clock                #    0.001 CPUs utilized
                       2 context-switches          #    0.001 M/sec
                       0 CPU-migrations            #    0.000 M/sec
                     157 page-faults               #    0.116 M/sec
                  11,986 cycles                    #    0.009 GHz
         <not supported> stalled-cycles-frontend
         <not supported> stalled-cycles-backend
                 496,986 instructions              #   41.46  insns per cycle
                 138,065 branches                  #  102.246 M/sec
                   7,245 branch-misses             #    5.25% of all branches
           <not counted> L1-dcache-loads
           <not counted> L1-dcache-load-misses
           <not counted> LLC-loads
           <not counted> LLC-load-misses
           <not counted> L1-icache-loads
           <not counted> L1-icache-load-misses
           <not counted> dTLB-loads
           <not counted> dTLB-load-misses
           <not counted> iTLB-loads
           <not counted> iTLB-load-misses
           <not counted> L1-dcache-prefetches
         <not supported> L1-dcache-prefetch-misses
      
             1.002397333 seconds time elapsed
      
      v1->v2:
      changed supported type from int to bool
      
      v2->v3
      fixed vertical alignment of new struct element
      
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Link: http://lkml.kernel.org/r/1306767359-13221-1-git-send-email-dsahern@gmail.com
      
      
      Signed-off-by: default avatarDavid Ahern <dsahern@gmail.com>
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      2cee77c4
    • Arnaldo Carvalho de Melo's avatar
      perf evlist: Don't die if sample_{id_all|type} is invalid · c2a70653
      Arnaldo Carvalho de Melo authored
      Fixes two more cases where the python binding would not load:
      
      . Not finding die(), which it shouldn't anyway, not good to just stop the
        world because some particular perf.data file is invalid, just propagate
        the error to the caller.
      
      . Not finding perf_sample_size: fix it by moving it from event.c to evsel,
        where it belongs, as most cases are moving to operate on an evsel object.o
      
      One of the fixed problems:
      
      [root@emilia ~]# python
      >>> import perf
      Traceback (most recent call last):
        File "<stdin>", line 1, in <module>
      ImportError: /home/acme/git/build/perf/python/perf.so: undefined symbol: perf_sample_size
      >>>
      [root@emilia ~]#
      
      Cc: Frederic Weisbecker <fweisbec@gmail.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-1hkj7b2cvgbfnoizsekjb6c9@git.kernel.org
      
      
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      c2a70653
  4. 15 Apr, 2011 1 commit
  5. 10 Mar, 2011 1 commit
    • Arnaldo Carvalho de Melo's avatar
      perf session: Use evlist/evsel for managing perf.data attributes · a91e5431
      Arnaldo Carvalho de Melo authored
      
      
      So that we can reuse things like the id to attr lookup routine
      (perf_evlist__id2evsel) that uses a hash table instead of the linear
      lookup done in the older perf_header_attr routines, etc.
      
      Also to make evsels/evlist more pervasive an API, simplyfing using the
      emerging perf lib.
      
      cc: Arun Sharma <arun@sharma-home.net>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      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 <tzanussi@gmail.com>
      LKML-Reference: <new-submission>
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      a91e5431
  6. 06 Mar, 2011 1 commit
    • Arnaldo Carvalho de Melo's avatar
      perf tools: Improve support for sessions with multiple events · e248de33
      Arnaldo Carvalho de Melo authored
      
      
      By creating an perf_evlist out of the attributes in the perf.data file
      header, so that we can use evlists and evsels when reading recorded
      sessions in addition to when we record sessions.
      
      More work is needed to allow tools to allow the user to select which
      events are wanted when browsing sessions, be it just one or a subset of
      them, aggregated or showed at the same time but with different
      indications on the UI to allow seeing workloads thru different views at
      the same time.
      
      But the overall goal/trend is to more uniformly use evsels and evlists.
      
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      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 <tzanussi@gmail.com>
      LKML-Reference: <new-submission>
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      e248de33
  7. 17 Feb, 2011 1 commit
    • Stephane Eranian's avatar
      perf: make perf stat print user provided full event names · f0c55bcf
      Stephane Eranian authored
      
      
      This patch changes the way perf stat prints event names at the end of a
      run. Until now, it was trying to reconstruct the event name from its
      encoding. The problem is that it would only print generic events without
      their modifiers (u, k, pp).
      
      This patch saves the event name as passed by the user in the evsel
      struct and uses it to print the final event name.
      
      This would also work in case perf is linked with a library (such as
      libpfm4) which provides full PMU event tables.
      
      $ perf stat -e cycles:u,cycles:k date
      Wed Feb 16 14:58:52 CET 2011
      
       Performance counter stats for 'date':
      
                  568600 cycles:u
                 2779715 cycles:k
      
              0.001908182  seconds time elapsed
      
      Cc: Arun Sharma <arun@sharma-home.net>
      Cc: David S. Miller <davem@davemloft.net>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Robert Richter <robert.richter@amd.com>
      Cc: Stephane Eranian <eranian@gmail.com>
      LPU-Reference: <4d5bdc64.98a1df0a.7aa3.06c2@mx.google.com>
      Signed-off-by: default avatarStephane Eranian <eranian@google.com>
      [ committer note: Fixed a merge problem with 023695d9
      
       "Add cgroup support" ]
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      f0c55bcf
  8. 16 Feb, 2011 1 commit
    • Stephane Eranian's avatar
      perf tool: Add cgroup support · 023695d9
      Stephane Eranian authored
      
      
      This patch adds the ability to filter monitoring based on container groups
      (cgroups) for both perf stat and perf record. It is possible to monitor
      multiple cgroup in parallel. There is one cgroup per event. The cgroups to
      monitor are passed via a new -G option followed by a comma separated list of
      cgroup names.
      
      The cgroup filesystem has to be mounted. Given a cgroup name, the perf tool
      finds the corresponding directory in the cgroup filesystem and opens it. It
      then passes that file descriptor to the kernel.
      
      Example:
      
      $ perf stat -B -a -e cycles:u,cycles:u,cycles:u -G test1,,test2 -- sleep 1
       Performance counter stats for 'sleep 1':
      
            2,368,667,414  cycles                   test1
            2,369,661,459  cycles
            <not counted>  cycles                   test2
      
              1.001856890  seconds time elapsed
      
      Signed-off-by: default avatarStephane Eranian <eranian@google.com>
      Signed-off-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
      LKML-Reference: <4d590290.825bdf0a.7d0a.4890@mx.google.com>
      Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      023695d9
  9. 30 Jan, 2011 1 commit
    • Arnaldo Carvalho de Melo's avatar
      perf evlist: Move evlist methods to evlist.c · f8a95309
      Arnaldo Carvalho de Melo authored
      
      
      They were on evsel.c because they came from refactoring existing evsel
      methods, so, to make reviewing the changes easier, I kept it there, now
      its a plain move.
      
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      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 <tzanussi@gmail.com>
      LKML-Reference: <new-submission>
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      f8a95309
  10. 24 Jan, 2011 1 commit
    • Arnaldo Carvalho de Melo's avatar
      perf evsel: Introduce perf_evsel__{in,ex}it · ef1d1af2
      Arnaldo Carvalho de Melo authored
      
      
      Out of the {con,des}structor, as in interpreted language bindings we will
      need to go back from the wrapper object to the real thing. In that case
      using container_of will save us to have an extra pointer in the perf_evsel
      struct.
      
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      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 <tzanussi@gmail.com>
      LKML-Reference: <new-submission>
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      ef1d1af2
  11. 22 Jan, 2011 4 commits
    • Arnaldo Carvalho de Melo's avatar
      perf evlist: Move the mmap array from perf_evsel · 70db7533
      Arnaldo Carvalho de Melo authored
      
      
      Adopting the new model used in 'perf record', where we don't have a map
      per thread per cpu, instead we have an mmap per cpu, established on the
      first fd for that cpu and ask the kernel using the
      PERF_EVENT_IOC_SET_OUTPUT ioctl to send events for the other fds on that
      cpu for the one with the mmap.
      
      The methods moved from perf_evsel to perf_evlist, but for easing review
      they were modified in place, in evsel.c, the next patch will move the
      migrated methods to evlist.c.
      
      With this 'perf top' now uses the same mmap model used by 'perf record'
      and the next patches will make 'perf record' use these new routines,
      establishing a common codebase for both tools.
      
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      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 <tzanussi@gmail.com>
      LKML-Reference: <new-submission>
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      70db7533
    • Arnaldo Carvalho de Melo's avatar
      perf evsel: Introduce mmap support · 70082dd9
      Arnaldo Carvalho de Melo authored
      
      
      Out of the code in 'perf top'. Record is next in line.
      
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      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 <tzanussi@gmail.com>
      LKML-Reference: <new-submission>
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      70082dd9
    • Arnaldo Carvalho de Melo's avatar
      perf evsel: Allow specifying if the inherit bit should be set · 9d04f178
      Arnaldo Carvalho de Melo authored
      
      
      As this is a per-cpu attribute, we can't set it up in advance and use it
      for all the calls.
      
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      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 <tzanussi@gmail.com>
      LKML-Reference: <new-submission>
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      9d04f178
    • Arnaldo Carvalho de Melo's avatar
      perf evsel: Support event groups · f08199d3
      Arnaldo Carvalho de Melo authored
      
      
      The perf_evsel__open now have an extra boolean argument specifying if
      event grouping is desired.
      
      The first file descriptor created on a CPU becomes the group leader.
      
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      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 <tzanussi@gmail.com>
      LKML-Reference: <new-submission>
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      f08199d3
  12. 07 Jan, 2011 1 commit
    • Lin Ming's avatar
      perf tools: Pass whole attr to event selectors · 23a2f3ab
      Lin Ming authored
      Since commit 69aad6f1
      
      (perf tools: Introduce event selectors), only
      perf_event_attr::type and ::config are passed to event selector, which
      makes perf tool not work correctly.
      
      For example, PEBS does not work because perf_event_attr::precise_ip is
      not passed to the syscall.
      
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Peter Zijlstra <peterz@infradead.org>
      LKML-Reference: <1294369869.20563.19.camel@minggr.sh.intel.com>
      Signed-off-by: default avatarLin Ming <ming.m.lin@intel.com>
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      23a2f3ab
  13. 05 Jan, 2011 1 commit
    • Stephane Eranian's avatar
      perf tools: Fix perf_event.h header usage · d030260a
      Stephane Eranian authored
      
      
      This patch fixes the usage of the perf_event.h header file
      between command modules and the supporting code in util.
      
      It is necessary to ensure that ALL files use the SAME
      perf_event.h header from the kernel source tree.
      
      There were a couple of #include <linux/perf_event.h> mixed
      with #include "../../perf_event.h".
      
      This caused issues on some distros because of mismatch
      in the layout of struct perf_event_attr. That eventually
      led perf stat to segfault.
      
      Cc: David S. Miller <davem@davemloft.net>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Robert Richter <robert.richter@amd.com>
      Cc: Stephane Eranian <eranian@gmail.com>
      LKML-Reference: <4d233cf0.2308e30a.7b00.ffffc187@mx.google.com>
      Signed-off-by: default avatarStephane Eranian <eranian@google.com>
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      d030260a
  14. 04 Jan, 2011 3 commits
    • Arnaldo Carvalho de Melo's avatar
      perf evsel: Use {cpu,thread}_map to shorten list of parameters · 86bd5e86
      Arnaldo Carvalho de Melo authored
      
      
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      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 <tzanussi@gmail.com>
      LKML-Reference: <new-submission>
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      86bd5e86
    • Arnaldo Carvalho de Melo's avatar
      perf evsel: Introduce per cpu and per thread open helpers · 48290609
      Arnaldo Carvalho de Melo authored
      
      
      Abstracting away the loops needed to create the various event fd handlers.
      
      The users have to pass a confiruged perf->evsel.attr field, which is already
      usable after perf_evsel__new (constructor) time, using defaults.
      
      Comes out of the ad-hoc routines in builtin-stat, that now uses it.
      
      Fixed a small silly bug where we were die()ing before killing our
      children, dysfunctional family this one 8-)
      
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      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 <tzanussi@gmail.com>
      LKML-Reference: <new-submission>
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      48290609
    • Arnaldo Carvalho de Melo's avatar
      perf evsel: Steal the counter reading routines from stat · c52b12ed
      Arnaldo Carvalho de Melo authored
      
      
      Making them hopefully generic enough to be used in 'perf test',
      well see.
      
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      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 <tzanussi@gmail.com>
      LKML-Reference: <new-submission>
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      c52b12ed
  15. 03 Jan, 2011 2 commits
    • Arnaldo Carvalho de Melo's avatar
      perf evsel: Adopt MATCH_EVENT macro from 'stat' · daec78a0
      Arnaldo Carvalho de Melo authored
      
      
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      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 <tzanussi@gmail.com>
      LKML-Reference: <new-submission>
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      daec78a0
    • Arnaldo Carvalho de Melo's avatar
      perf tools: Introduce event selectors · 69aad6f1
      Arnaldo Carvalho de Melo authored
      
      
      Out of ad-hoc code and global arrays with hard coded sizes.
      
      This is the first step on having a library that will be first
      used on regression tests in the 'perf test' tool.
      
      [acme@felicio linux]$ size /tmp/perf.before
         text	   data	    bss	    dec	    hex	filename
      1273776	  97384	5104416	6475576	 62cf38	/tmp/perf.before
      [acme@felicio linux]$ size /tmp/perf.new
         text	   data	    bss	    dec	    hex	filename
      1275422	  97416	1392416	2765254	 2a31c6	/tmp/perf.new
      
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      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 <tzanussi@gmail.com>
      LKML-Reference: <new-submission>
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      69aad6f1