diff options
Diffstat (limited to 'arch/powerpc/perf/core-book3s.c')
| -rw-r--r-- | arch/powerpc/perf/core-book3s.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c index 766f064f00fb..b17358e8dc12 100644 --- a/arch/powerpc/perf/core-book3s.c +++ b/arch/powerpc/perf/core-book3s.c @@ -1963,6 +1963,17 @@ static int power_pmu_event_init(struct perf_event *event) return -ENOENT; } + /* + * PMU config registers have fields that are + * reserved and some specific values for bit fields are reserved. + * For ex., MMCRA[61:62] is Randome Sampling Mode (SM) + * and value of 0b11 to this field is reserved. + * Check for invalid values in attr.config. + */ + if (ppmu->check_attr_config && + ppmu->check_attr_config(event)) + return -EINVAL; + event->hw.config_base = ev; event->hw.idx = 0; |