1. 12 Jul, 2016 38 commits
  2. 10 Jul, 2016 1 commit
    • Ingo Molnar's avatar
      Revert "perf/x86/intel, watchdog: Switch NMI watchdog to ref cycles on x86" · 44530d58
      Ingo Molnar authored
      This reverts commit 2c95afc1.
      
      Stephane reported the following regression:
      
       > Since Andi added:
       >
       > commit 2c95afc1
       > Author: Andi Kleen <ak@linux.intel.com>
       > Date:   Thu Jun 9 06:14:38 2016 -0700
       >
       >    perf/x86/intel, watchdog: Switch NMI watchdog to ref cycles on x86
       >
       > $ perf stat -e ref-cycles ls
       >   <not counted> ....
       >
       > fails systematically because the ref-cycles is now used by the
       > watchdog and given this is a system-wide pinned event, it monopolizes
       > the fixed counter 2 which is the only counter able to measure this event.
      
      Since the next merge window is near, fix the regression for now
      by reverting the commit.
      Reported-by: default avatarStephane Eranian <eranian@google.com>
      Cc: Andi Kleen <ak@linux.intel.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Vince Weaver <vincent.weaver@maine.edu>
      Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: linux-kernel@vger.kernel.org
      Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
      44530d58
  3. 07 Jul, 2016 1 commit