diff options
| author | Namhyung Kim <namhyung@kernel.org> | 2023-11-30 11:52:46 +0530 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2023-11-30 09:34:40 +0100 |
| commit | 0f9e0d7928d8e88d57b1482effab70edb9741ce1 (patch) | |
| tree | 43dddde611ceed840e01aeb9bca92e1b159a07d0 /arch/x86/events | |
| parent | cb4a6ccf35839895da63fcf6134d6fbd13224805 (diff) | |
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: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20231130062246.290-1-ravi.bangoria@amd.com
Diffstat (limited to 'arch/x86/events')
| -rw-r--r-- | arch/x86/events/amd/ibs.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/events/amd/ibs.c b/arch/x86/events/amd/ibs.c index 6911c5399d02..e91970b01d62 100644 --- a/arch/x86/events/amd/ibs.c +++ b/arch/x86/events/amd/ibs.c @@ -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; |