diff options
Diffstat (limited to 'include/linux/perf_event.h')
| -rw-r--r-- | include/linux/perf_event.h | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index b8b195fbe787..85749ae8cb5f 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -834,14 +834,24 @@ extern int perf_event_overflow(struct perf_event *event, struct perf_sample_data *data, struct pt_regs *regs); +extern void perf_event_output_forward(struct perf_event *event, + struct perf_sample_data *data, + struct pt_regs *regs); +extern void perf_event_output_backward(struct perf_event *event, + struct perf_sample_data *data, + struct pt_regs *regs); extern void perf_event_output(struct perf_event *event, - struct perf_sample_data *data, - struct pt_regs *regs); + struct perf_sample_data *data, + struct pt_regs *regs); static inline bool is_default_overflow_handler(struct perf_event *event) { - return (event->overflow_handler == perf_event_output); + if (likely(event->overflow_handler == perf_event_output_forward)) + return true; + if (unlikely(event->overflow_handler == perf_event_output_backward)) + return true; + return false; } extern void @@ -1051,8 +1061,20 @@ static inline bool has_aux(struct perf_event *event) return event->pmu->setup_aux; } +static inline bool is_write_backward(struct perf_event *event) +{ + return !!event->attr.write_backward; +} + extern int perf_output_begin(struct perf_output_handle *handle, struct perf_event *event, unsigned int size); +extern int perf_output_begin_forward(struct perf_output_handle *handle, + struct perf_event *event, + unsigned int size); +extern int perf_output_begin_backward(struct perf_output_handle *handle, + struct perf_event *event, + unsigned int size); + extern void perf_output_end(struct perf_output_handle *handle); extern unsigned int perf_output_copy(struct perf_output_handle *handle, const void *buf, unsigned int len); |
