The following commit has been merged into the perf/urgent branch of tip: Commit-ID: e506d1dac0edb2df82f2aa0582e814f9cd9aa07d Gitweb: https://git.kernel.org/tip/e506d1dac0edb2df82f2aa0582e814f9cd9aa07d Author: Peter Zijlstra <pet...@infradead.org> AuthorDate: Fri, 30 Oct 2020 12:15:06 +01:00 Committer: Peter Zijlstra <pet...@infradead.org> CommitterDate: Mon, 09 Nov 2020 18:12:35 +01:00
perf/x86: Make dummy_iregs static Having pt_regs on-stack is unfortunate, it's 168 bytes. Since it isn't actually used, make it a static variable. This both gets if off the stack and ensures it gets 0 initialized, just in case someone does look at it. Reported-by: Steven Rostedt <rost...@goodmis.org> Signed-off-by: Peter Zijlstra (Intel) <pet...@infradead.org> Link: https://lkml.kernel.org/r/20201030151955.324273...@infradead.org --- arch/x86/events/intel/ds.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/events/intel/ds.c b/arch/x86/events/intel/ds.c index 276b29d..b47cc42 100644 --- a/arch/x86/events/intel/ds.c +++ b/arch/x86/events/intel/ds.c @@ -1738,7 +1738,7 @@ __intel_pmu_pebs_event(struct perf_event *event, struct x86_perf_regs perf_regs; struct pt_regs *regs = &perf_regs.regs; void *at = get_next_pebs_record_by_bit(base, top, bit); - struct pt_regs dummy_iregs; + static struct pt_regs dummy_iregs; if (hwc->flags & PERF_X86_EVENT_AUTO_RELOAD) { /*
