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 <peterz@xxxxxxxxxxxxx>
AuthorDate: Fri, 30 Oct 2020 12:15:06 +01:00
Committer: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
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 <rostedt@xxxxxxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Link: https://lkml.kernel.org/r/20201030151955.324273677@xxxxxxxxxxxxx
---
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) {
/*
|