[Patch v4 02/13] perf/x86/intel: Correct large PEBS flag check

[Dapeng Mi]

Current large PEBS flag check only checks if sample_regs_user contains
unsupported GPRs but doesn't check if sample_regs_intr contains
unsupported GPRs.

Of course, current PEBS HW supports to sample all perf supported GPRs,
so the missed check doesn't cause real issue. But this won't be true
after arch-PEBS supports SSP register sampling. So correct this issue.

Fixes: a47ba4d77e12 ("perf/x86: Enable free running PEBS for REGS_USER/INTR")
Signed-off-by: Dapeng Mi <dapeng1.mi@xxxxxxxxxxxxxxx>
---
 arch/x86/events/intel/core.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index fb6e5c2251a2..80c45c92d0da 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -4032,7 +4032,9 @@ static unsigned long intel_pmu_large_pebs_flags(struct perf_event *event)
 	if (!event->attr.exclude_kernel)
 		flags &= ~PERF_SAMPLE_REGS_USER;
 	if (event->attr.sample_regs_user & ~PEBS_GP_REGS)
-		flags &= ~(PERF_SAMPLE_REGS_USER | PERF_SAMPLE_REGS_INTR);
+		flags &= ~PERF_SAMPLE_REGS_USER;
+	if (event->attr.sample_regs_intr & ~PEBS_GP_REGS)
+		flags &= ~PERF_SAMPLE_REGS_INTR;
 	return flags;
 }
 
-- 
2.43.0