perf_output_handle 635 include/linux/perf_event.h extern void perf_output_sample(struct perf_output_handle *handle, perf_output_handle 785 include/linux/perf_event.h extern int perf_output_begin(struct perf_output_handle *handle, perf_output_handle 787 include/linux/perf_event.h extern void perf_output_end(struct perf_output_handle *handle); perf_output_handle 788 include/linux/perf_event.h extern unsigned int perf_output_copy(struct perf_output_handle *handle, perf_output_handle 790 include/linux/perf_event.h extern unsigned int perf_output_skip(struct perf_output_handle *handle,