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perf/urgent fixes:

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 - Fix segfault pressing -> in 'perf top' with no hist entries (Wang Nan)
 
    E.g:
 	perf top -e page-faults --pid 11400 # 11400 generates no page-fault
 
 - Fix propagation of thread and cpu maps, that got broken when doing incomplete
   changes to better support events with a PMU cpu mask, leading to Intel PT to
   fail with an error like:
 
   $ perf record -e intel_pt//u uname
   Error: The sys_perf_event_open() syscall returned with
           22 (Invalid argument) for event (sched:sched_switch).
 
   Because intel_pt adds that sched:sched_switch evsel to the evlist after the
   thread/cpu maps were propagated to the evsels, fix it (Adrian Hunter)
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

Pull perf/urgent fixes from Arnaldo Carvalho de Melo:

- Fix segfault pressing -> in 'perf top' with no hist entries. (Wang Nan)

   E.g:
	perf top -e page-faults --pid 11400 # 11400 generates no page-fault

- Fix propagation of thread and cpu maps, that got broken when doing incomplete
  changes to better support events with a PMU cpu mask, leading to Intel PT to
  fail with an error like:

    $ perf record -e intel_pt//u uname
    Error: The sys_perf_event_open() syscall returned with
              22 (Invalid argument) for event (sched:sched_switch).

  Because intel_pt adds that sched:sched_switch evsel to the evlist after the
  thread/cpu maps were propagated to the evsels, fix it. (Adrian Hunter)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2015-09-16 09:06:54 +02:00
commit f6cf87f748
8 changed files with 124 additions and 80 deletions
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