1. 02 7月, 2009 5 次提交
    • M
      perf_counter tools: Make symbol loading consistently return number of loaded symbols · 9974f496
      Mike Galbraith 提交于
      perf_counter tools: Make symbol loading consistently return number of loaded symbols.
      Signed-off-by: NMike Galbraith <efault@gmx.de>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
      LKML-Reference: <1246514758.13293.42.camel@marge.simson.net>
      Signed-off-by: NIngo Molnar <mingo@elte.hu>
      9974f496
    • F
      perf stat: Handle pipe read failures in perf stat · a92bef0f
      Frederic Weisbecker 提交于
      Building builtin-stat.c reports the following errors:
      
      cc1: warnings being treated as errors
      builtin-stat.c: In function ‘run_perf_stat’:
      builtin-stat.c:242: erreur: ignoring return value of ‘read’, declared with attribute warn_unused_result
      builtin-stat.c:255: erreur: ignoring return value of ‘read’, declared with attribute warn_unused_result
      make: *** [builtin-stat.o] Erreur 1
      
      This patch handles the possible pipe read failures.
      Signed-off-by: NFrederic Weisbecker <fweisbec@gmail.com>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Anton Blanchard <anton@samba.org>
      Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
      LKML-Reference: <1246474930-6088-2-git-send-email-fweisbec@gmail.com>
      Signed-off-by: NIngo Molnar <mingo@elte.hu>
      a92bef0f
    • F
      perf_counter: Ignore the nmi call frames in the x86-64 backtraces · 0406ca6d
      Frederic Weisbecker 提交于
      About every callchains recorded with perf record are filled up
      including the internal perfcounter nmi frame:
      
       perf_callchain
       perf_counter_overflow
       intel_pmu_handle_irq
       perf_counter_nmi_handler
       notifier_call_chain
       atomic_notifier_call_chain
       notify_die
       do_nmi
       nmi
      
      We want ignore this frame as it's not interesting for
      instrumentation. To solve this, we simply ignore every frames
      from nmi context.
      
      New example of "perf report -s sym -c" after this patch:
      
      9.59%  [k] search_by_key
                   4.88%
                      search_by_key
                      reiserfs_read_locked_inode
                      reiserfs_iget
                      reiserfs_lookup
                      do_lookup
                      __link_path_walk
                      path_walk
                      do_path_lookup
                      user_path_at
                      vfs_fstatat
                      vfs_lstat
                      sys_newlstat
                      system_call_fastpath
                      __lxstat
                      0x406fb1
      
                   3.19%
                      search_by_key
                      search_by_entry_key
                      reiserfs_find_entry
                      reiserfs_lookup
                      do_lookup
                      __link_path_walk
                      path_walk
                      do_path_lookup
                      user_path_at
                      vfs_fstatat
                      vfs_lstat
                      sys_newlstat
                      system_call_fastpath
                      __lxstat
                      0x406fb1
      [...]
      
      For now this patch only solves the problem in x86-64.
      Signed-off-by: NFrederic Weisbecker <fweisbec@gmail.com>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Anton Blanchard <anton@samba.org>
      Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
      LKML-Reference: <1246474930-6088-1-git-send-email-fweisbec@gmail.com>
      Signed-off-by: NIngo Molnar <mingo@elte.hu>
      0406ca6d
    • A
      perf_counter tools: Share list.h with the kernel · 5da50258
      Arnaldo Carvalho de Melo 提交于
      The copy we were using came from another copy I did for the dwarves
      (pahole) package, that came from the kernel years ago.
      
      The only function that is used by the perf tools and that isn't in the
      kernel is list_del_range, that I'm leaving in the perf tools only for
      now.
      Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Paul Mackerras <paulus@samba.org>
      LKML-Reference: <20090701174608.GA5823@ghostprotocols.net>
      Signed-off-by: NIngo Molnar <mingo@elte.hu>
      5da50258
    • A
      perf_counter tools: Share rbtree.with the kernel · 43cbcd8a
      Arnaldo Carvalho de Melo 提交于
      The tools/perf/util/rbtree.c copy already drifted by three
      csets:
      
       4b324126
       4c601178
       16c047ad
      
      So remove the copy and use the lib/rbtree.c directly, sharing
      the source code while still generating a separate object file,
      since tools/perf uses a far more agressive -O6 switch.
      Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      LKML-Reference: <20090701152837.GG15682@ghostprotocols.net>
      Signed-off-by: NIngo Molnar <mingo@elte.hu>
      43cbcd8a
  2. 01 7月, 2009 35 次提交