Commit 0f9e0d79 authored by Namhyung Kim's avatar Namhyung Kim Committed by Ingo Molnar
Browse files

perf/x86/amd: Reject branch stack for IBS events 



The AMD IBS PMU doesn't handle branch stacks, so it should not accept
events with brstack.

Signed-off-by: default avatarNamhyung Kim <namhyung@kernel.org>
Signed-off-by: default avatarRavi Bangoria <ravi.bangoria@amd.com>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20231130062246.290-1-ravi.bangoria@amd.com
parent cb4a6ccf

arch/x86/events/amd/ibs.c

+3 −0
Original line number Diff line number Diff line
@@ -287,6 +287,9 @@ static int perf_ibs_init(struct perf_event *event) 
	if (config & ~perf_ibs->config_mask)

		return -EINVAL;



	if (has_branch_stack(event))

		return -EOPNOTSUPP;



	ret = validate_group(event);

	if (ret)

		return ret;