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authorReinette Chatre2018-09-19 10:29:06 -0700
committerThomas Gleixner2018-09-28 22:44:53 +0200
commitbefb1b3c2703897c5b8ffb0044dc5d0e5f27c5d7 (patch)
treecad7af2717da74d35f2a6bdf23a590cc5522b3a7 /Documentation/mips
parentc307aaf3eb47969105887e4e8991ec00960a7ce8 (diff)
perf/core: Add sanity check to deal with pinned event failure
It is possible that a failure can occur during the scheduling of a pinned event. The initial portion of perf_event_read_local() contains the various error checks an event should pass before it can be considered valid. Ensure that the potential scheduling failure of a pinned event is checked for and have a credible error. Suggested-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: fenghua.yu@intel.com Cc: tony.luck@intel.com Cc: acme@kernel.org Cc: gavin.hindman@intel.com Cc: jithu.joseph@intel.com Cc: dave.hansen@intel.com Cc: hpa@zytor.com Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/6486385d1f30336e9973b24c8c65f5079543d3d3.1537377064.git.reinette.chatre@intel.com
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