]> git.baikalelectronics.ru Git - kernel.git/commit
projects / kernel.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: 18ba4bd) | patch
perf/x86: Reduce stack usage for x86_pmu::drain_pebs()
authorPeter Zijlstra <peterz@infradead.org>
Fri, 30 Oct 2020 13:58:48 +0000 (14:58 +0100)
committerPeter Zijlstra <peterz@infradead.org>
Mon, 9 Nov 2020 17:12:33 +0000 (18:12 +0100)
commit1c27ae361cffe0abc648c55c0a256da6967b2b17
tree2c36d0070f18e59ff947b56b4ca53ffad5be1744tree | snapshot
parent18ba4bd88b0e0e25cea00d922c7c1c21139a2cbfcommit | diff
perf/x86: Reduce stack usage for x86_pmu::drain_pebs()

intel_pmu_drain_pebs_*() is typically called from handle_pmi_common(),
both have an on-stack struct perf_sample_data, which is *big*. Rewire
things so that drain_pebs() can use the one handle_pmi_common() has.

Reported-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20201030151955.054099690@infradead.org
arch/x86/events/intel/core.c diff | blob | history
arch/x86/events/intel/ds.c diff | blob | history
arch/x86/events/perf_event.h diff | blob | history
Linux Kernel Source Tree.