1. 04 Oct, 2009 1 commit
  2. 01 Oct, 2009 4 commits
    • Mulyadi Santosa's avatar
      perf tools: Run generate-cmdlist.sh properly · 1ad0560e
      Mulyadi Santosa authored
      Right now generate-cmdlist.sh is not executable, so we
      should call it as an argument ".".
      
      This fixes cases where due to different umask defaults
      the generate-cmdlist.sh script is not executable in
      a kernel tree checkout.
      Signed-off-by: default avatarMulyadi Santosa <mulyadi.santosa@gmail.com>
      Acked-by: default avatarSam Ravnborg <sam@ravnborg.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      LKML-Reference: <f284c33d0909251201w422e9687x8cd3a784e85adf7d@mail.gmail.com>
      Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      1ad0560e
    • Xiao Guangrong's avatar
      perf_event: Clean up perf_event_init_task() · 27f9994c
      Xiao Guangrong authored
      While at it: we can traverse ctx->group_list to get all
      group leader, it should be safe since we hold ctx->mutex.
      
      Changlog v1->v2:
      
        - remove WARN_ON_ONCE() according to Peter Zijlstra's suggestion
      Signed-off-by: default avatarXiao Guangrong <xiaoguangrong@cn.fujitsu.com>
      Acked-by: default avatarPeter Zijlstra <peterz@infradead.org>
      Cc: Paul Mackerras <paulus@samba.org>
      LKML-Reference: <4ABC5AF9.6060808@cn.fujitsu.com>
      Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      27f9994c
    • Xiao Guangrong's avatar
      perf_event: Fix event group handling in __perf_event_sched_*() · 8c9ed8e1
      Xiao Guangrong authored
      Paul Mackerras says:
      
       "Actually, looking at this more closely, it has to be a group
       leader anyway since it's at the top level of ctx->group_list.  In
       fact I see four places where we do:
      
        list_for_each_entry(event, &ctx->group_list, group_entry) {
      	if (event == event->group_leader)
      		...
      
       or the equivalent, three of which appear to have been introduced
       by afedadf2 ("perf_counter: Optimize sched in/out of counters")
       back in May by Peter Z.
      
       As far as I can see the if () is superfluous in each case (a
       singleton event will be a group of 1 and will have its
       group_leader pointing to itself)."
      
       [ See: http://marc.info/?l=linux-kernel&m=125361238901442&w=2 ]
      
      And Peter Zijlstra points out this is a bugfix:
      
       "The intent was to call event_sched_{in,out}() for single event
        groups because that's cheaper than group_sched_{in,out}(),
        however..
      
        - as you noticed, I got the condition wrong, it should have read:
      
            list_empty(&event->sibling_list)
      
        - it failed to call group_can_go_on() which deals with ->exclusive.
      
        - it also doesn't call hw_perf_group_sched_in() which might break
          power."
      
       [ See: http://marc.info/?l=linux-kernel&m=125369523318583&w=2 ]
      
      Changelog v1->v2:
      
       - Fix the title name according to Peter Zijlstra's suggestion
      
       - Remove the comments and WARN_ON_ONCE() as Peter Zijlstra's
         suggestion
      Signed-off-by: default avatarXiao Guangrong <xiaoguangrong@cn.fujitsu.com>
      Acked-by: default avatarPeter Zijlstra <peterz@infradead.org>
      Cc: Paul Mackerras <paulus@samba.org>
      LKML-Reference: <4ABC5A55.7000208@cn.fujitsu.com>
      Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      8c9ed8e1
    • Arjan van de Ven's avatar
      perf timechart: Add a power-only mode · 39a90a8e
      Arjan van de Ven authored
      For doing work on the Linux power management components, I need to
      make long (30+ seconds) traces. Currently, this then results in a
      HUGE svg file, with mostly process data that isn't interesting.
      
      This patch adds a --power-only mode to perf timechart that only
      outputs the CPU power section of the SVG; this significantly
      reduces the size of the SVG file, making even 30+ second traces
      viewable with inkscape.
      
      As a minor tweak for the same effect, the minimum text size is
      decreased; current inkscape cannot zoom in deep enough to show text
      this small, but it reduces inkscape compute time.
      Signed-off-by: default avatarArjan van de Ven <arjan@linux.intel.com>
      Cc: peterz@infradead.org
      LKML-Reference: <20090924154013.0675ab71@infradead.org>
      Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      39a90a8e
  3. 30 Sep, 2009 1 commit
  4. 27 Sep, 2009 14 commits
  5. 26 Sep, 2009 20 commits