1 files changed, 5 insertions, 0 deletions

diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 1d5c551a5add..e1a051724f7e 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -447,6 +447,11 @@ struct pmu {
          * Filter events for PMU-specific reasons.
          */
         int (*filter_match)             (struct perf_event *event); /* optional */
+
+        /*
+         * Check period value for PERF_EVENT_IOC_PERIOD ioctl.
+         */
+        int (*check_period)             (struct perf_event *event, u64 value); /* optional */
 };
 
 enum perf_addr_filter_action_t {