Pull perf fixes from Thomas Gleixner:
"A set of perf related fixes:
- fix a CR4.PCE propagation issue caused by usage of mm instead of
active_mm and therefore propagated the wrong value.
- perf core fixes, which plug a use-after-free issue and make the
event inheritance on fork more robust.
- a tooling fix for symbol handling"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf symbols: Fix symbols__fixup_end heuristic for corner cases
x86/perf: Clarify why x86_pmu_event_mapped() isn't racy
x86/perf: Fix CR4.PCE propagation to use active_mm instead of mm
perf/core: Better explain the inherit magic
perf/core: Simplify perf_event_free_task()
perf/core: Fix event inheritance on fork()
perf/core: Fix use-after-free in perf_release()
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