From: Peter Zijlstra Date: Fri, 30 Oct 2020 11:15:06 +0000 (+0100) Subject: perf/x86: Make dummy_iregs static X-Git-Tag: v5.10.7~1045^2~9 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e506d1dac0edb2df82f2aa0582e814f9cd9aa07d;p=platform%2Fkernel%2Flinux-rpi.git 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 Signed-off-by: Peter Zijlstra (Intel) Link: https://lkml.kernel.org/r/20201030151955.324273677@infradead.org --- 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) { /*