diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/perf/core-book3s.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c index c0e5ea3d6b25..b027884173ee 100644 --- a/arch/powerpc/perf/core-book3s.c +++ b/arch/powerpc/perf/core-book3s.c @@ -2159,6 +2159,16 @@ static void record_and_restart(struct perf_event *event, unsigned long val, perf_event_update_userpage(event); /* + * Due to hardware limitation, sometimes SIAR could sample a kernel + * address even when freeze on supervisor state (kernel) is set in + * MMCR2. Check attr.exclude_kernel and address to drop the sample in + * these cases. + */ + if (event->attr.exclude_kernel && record) + if (is_kernel_addr(mfspr(SPRN_SIAR))) + record = 0; + + /* * Finally record data if requested. */ if (record) { |