perf/x86: Remove warning for zero PEBS status
The recent commit: 75f80859 ("perf/x86/intel/pebs: Robustify PEBS buffer drain") causes lots of warnings on different CPUs before Skylake when running PEBS intensive workloads. They can have a zero status field in the PEBS record when PEBS is racing with clearing of GLOBAl_STATUS. This also can cause hangs (it seems there are still problems with printk in NMI). Disable the warning, but still ignore the record. Signed-off-by:Andi Kleen <ak@linux.intel.com> Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Link: http://lkml.kernel.org/r/1449177740-5422-1-git-send-email-andi@firstfloor.org Signed-off-by:
Ingo Molnar <mingo@kernel.org>
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7b648018
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