1. 06 Oct, 2009 7 commits
  2. 05 Oct, 2009 4 commits
  3. 04 Oct, 2009 2 commits
    • Chris Wilson's avatar
      perf: Propagate term signal to child · 933da83a
      Chris Wilson authored
      If we launch the child on behalf of the user, ensure that it dies
      along with ourselves when we are interrupted.
      Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
      Cc: Chris Wilson <chris@chris-wilson.co.uk>
      LKML-Reference: <1254616502-4728-1-git-send-email-chris@chris-wilson.co.uk>
      Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      933da83a
    • Arnaldo Carvalho de Melo's avatar
      perf tools: Remove show_mask bitmask · ec218fc4
      Arnaldo Carvalho de Melo authored
      As it was not being exposed via any command line and with --dsos/--comms
      we can do this and even more, like asking for just kernel + some module:
      
      [root@doppio linux-2.6-tip]# perf report --dsos \[kernel\],\[drm\]
      --vmlinux /home/acme/git/build/tip-recvmmsg/vmlinux --modules | head -15
       # Samples: 619669
       #
       # Overhead          Command  Shared Object  Symbol
       # ........  ...............  .............  ......
       #
            7.12%          swapper  [kernel]       [k] read_hpet
            6.86%             init  [kernel]       [k] read_hpet
            6.22%             init  [kernel]       [k] mwait_idle_with_hints
            5.34%          swapper  [kernel]       [k] mwait_idle_with_hints
            3.01%          firefox  [kernel]       [.] vread_hpet
            2.14%             Xorg  [drm]          [k] drm_clflush_pages
            2.09%           pidgin  [kernel]       [.] vread_hpet
            1.58%     npviewer.bin  [kernel]       [.] vread_hpet
            1.37%          swapper  [kernel]       [k] hpet_next_event
            1.23%             Xorg  [kernel]       [k] read_hpet
      [root@doppio linux-2.6-tip]#
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Frédéric Weisbecker <fweisbec@gmail.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Mike Galbraith <efault@gmx.de>
      LKML-Reference: <20091003233048.GA30535@ghostprotocols.net>
      Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      ec218fc4
  4. 03 Oct, 2009 1 commit
  5. 02 Oct, 2009 1 commit
    • Arnaldo Carvalho de Melo's avatar
      perf tools: Rewrite and improve support for kernel modules · 439d473b
      Arnaldo Carvalho de Melo authored
      Representing modules as struct map entries, backed by a DSO, etc,
      using /proc/modules to find where the module is loaded.
      
      DSOs now can have a short and long name, so that in verbose mode we
      can show exactly which .ko or vmlinux image was used.
      
      As kernel modules now are a DSO separate from the kernel, we can
      ask for just the hits for a particular set of kernel modules, just
      like we can do with shared libraries:
      
      [root@doppio linux-2.6-tip]# perf report -n --vmlinux
      /home/acme/git/build/tip-recvmmsg/vmlinux --modules --dsos \[drm\] | head -15
          84.58%      13266             Xorg  [k] drm_clflush_pages
           4.02%        630             Xorg  [k] trace_kmalloc.clone.0
           3.95%        619             Xorg  [k] drm_ioctl
           2.07%        324             Xorg  [k] drm_addbufs
           1.68%        263             Xorg  [k] drm_gem_close_ioctl
           0.77%        120             Xorg  [k] drm_setmaster_ioctl
           0.70%        110             Xorg  [k] drm_lastclose
           0.68%        106             Xorg  [k] drm_open
           0.54%         85             Xorg  [k] drm_mm_search_free
      [root@doppio linux-2.6-tip]#
      
      Specifying --dsos /lib/modules/2.6.31-tip/kernel/drivers/gpu/drm/drm.ko
      would have the same effect. Allowing specifying just 'drm.ko' is left
      for another patch.
      
      Processing kallsyms so that per kernel module struct map are
      instantiated was also left for another patch. That will allow
      removing the module name from each of its symbols.
      
      struct symbol was reduced by removing the ->module backpointer and
      moving it (well now the map) to struct symbol_entry in perf top,
      that is its only user right now.
      
      The total linecount went down by ~500 lines.
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Frédéric Weisbecker <fweisbec@gmail.com>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Avi Kivity <avi@redhat.com>
      Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      439d473b
  6. 01 Oct, 2009 5 commits
  7. 30 Sep, 2009 5 commits
    • Arnaldo Carvalho de Melo's avatar
      perf trace: Remove dead code · cad30714
      Arnaldo Carvalho de Melo authored
      Several variables are not used at all, cut'n'paste leftovers.
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Frédéric Weisbecker <fweisbec@gmail.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      LKML-Reference: <20090928200818.GF3361@ghostprotocols.net>
      Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      cad30714
    • Arnaldo Carvalho de Melo's avatar
      perf sched: Remove dead code · a80deb62
      Arnaldo Carvalho de Melo authored
      Several variables are not used at all, cut'n'paste leftovers.
      
      Also check if the sample_type is RAW earlier, to avoid needless
      searches.
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Frédéric Weisbecker <fweisbec@gmail.com>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Mike Galbraith <efault@gmx.de>
      Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      a80deb62
    • Arnaldo Carvalho de Melo's avatar
      perf tools: Use rb_tree for maps · 1b46cddf
      Arnaldo Carvalho de Melo authored
      Threads can have many and kernel modules will be represented as a
      tree of maps as well.
      
      Ah, and for a perf.data with 146607 samples:
      
      Before:
      
      [root@doppio ~]# perf stat -r 5 perf report > /dev/null
      
       Performance counter stats for 'perf report' (5 runs):
      
           699.823680  task-clock-msecs         #      0.991 CPUs    ( +-   0.454% )
                   74  context-switches         #      0.000 M/sec   ( +-   1.709% )
                    2  CPU-migrations           #      0.000 M/sec   ( +-  17.008% )
                23114  page-faults              #      0.033 M/sec   ( +-   0.000% )
           1381257019  cycles                   #   1973.721 M/sec   ( +-   0.290% )
           1456894438  instructions             #      1.055 IPC     ( +-   0.007% )
             18779818  cache-references         #     26.835 M/sec   ( +-   0.380% )
               641799  cache-misses             #      0.917 M/sec   ( +-   1.200% )
      
          0.705972729  seconds time elapsed   ( +-   0.501% )
      
      [root@doppio ~]#
      
      After
      
       Performance counter stats for 'perf report' (5 runs):
      
           691.261451  task-clock-msecs         #      0.993 CPUs    ( +-   0.307% )
                   72  context-switches         #      0.000 M/sec   ( +-   0.829% )
                    6  CPU-migrations           #      0.000 M/sec   ( +-  18.409% )
                23127  page-faults              #      0.033 M/sec   ( +-   0.000% )
           1366395876  cycles                   #   1976.670 M/sec   ( +-   0.153% )
           1443136016  instructions             #      1.056 IPC     ( +-   0.012% )
             17956402  cache-references         #     25.976 M/sec   ( +-   0.325% )
               661924  cache-misses             #      0.958 M/sec   ( +-   1.335% )
      
          0.696127275  seconds time elapsed   ( +-   0.377% )
      
      I.e. we see some speedup too.
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Frédéric Weisbecker <fweisbec@gmail.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      LKML-Reference: <20090928174846.GA3361@ghostprotocols.net>
      Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      1b46cddf
    • John Kacur's avatar
      perf tools: Put common histogram functions in their own file · 3d1d07ec
      John Kacur authored
      Move histogram related functions into their own files (hist.c and
      hist.h) and make use of them in builtin-annotate.c and
      builtin-report.c.
      Signed-off-by: default avatarJohn Kacur <jkacur@redhat.com>
      Acked-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      LKML-Reference: <alpine.LFD.2.00.0909281531180.8316@localhost.localdomain>
      Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      3d1d07ec
    • Arnaldo Carvalho de Melo's avatar
      perf top: Add poll_idle to the skip list · 8357275b
      Arnaldo Carvalho de Melo authored
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      Acked-by: default avatarEric Dumazet <eric.dumazet@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Mike Galbraith <efault@gmx.de>
      LKML-Reference: <20090925220239.GA5488@ghostprotocols.net>
      Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      8357275b
  8. 27 Sep, 2009 14 commits
  9. 26 Sep, 2009 1 commit