59 lines
1.9 KiB
C
59 lines
1.9 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
|
#ifndef __PERF_EVENTS_STATS_
|
||
|
|
#define __PERF_EVENTS_STATS_
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <perf/event.h>
|
||
|
|
#include <linux/types.h>
|
||
|
|
#include "auxtrace.h"
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The kernel collects the number of events it couldn't send in a stretch and
|
||
|
|
* when possible sends this number in a PERF_RECORD_LOST event. The number of
|
||
|
|
* such "chunks" of lost events is stored in .nr_events[PERF_EVENT_LOST] while
|
||
|
|
* total_lost tells exactly how many events the kernel in fact lost, i.e. it is
|
||
|
|
* the sum of all struct perf_record_lost.lost fields reported.
|
||
|
|
*
|
||
|
|
* The kernel discards mixed up samples and sends the number in a
|
||
|
|
* PERF_RECORD_LOST_SAMPLES event. The number of lost-samples events is stored
|
||
|
|
* in .nr_events[PERF_RECORD_LOST_SAMPLES] while total_lost_samples tells
|
||
|
|
* exactly how many samples the kernel in fact dropped, i.e. it is the sum of
|
||
|
|
* all struct perf_record_lost_samples.lost fields reported.
|
||
|
|
*
|
||
|
|
* The total_period is needed because by default auto-freq is used, so
|
||
|
|
* multiplying nr_events[PERF_EVENT_SAMPLE] by a frequency isn't possible to get
|
||
|
|
* the total number of low level events, it is necessary to sum all struct
|
||
|
|
* perf_record_sample.period and stash the result in total_period.
|
||
|
|
*/
|
||
|
|
struct events_stats {
|
||
|
|
u64 total_lost;
|
||
|
|
u64 total_lost_samples;
|
||
|
|
u64 total_aux_lost;
|
||
|
|
u64 total_aux_partial;
|
||
|
|
u64 total_aux_collision;
|
||
|
|
u64 total_invalid_chains;
|
||
|
|
u32 nr_events[PERF_RECORD_HEADER_MAX];
|
||
|
|
u32 nr_lost_warned;
|
||
|
|
u32 nr_unknown_events;
|
||
|
|
u32 nr_invalid_chains;
|
||
|
|
u32 nr_unknown_id;
|
||
|
|
u32 nr_unprocessable_samples;
|
||
|
|
u32 nr_auxtrace_errors[PERF_AUXTRACE_ERROR_MAX];
|
||
|
|
u32 nr_proc_map_timeout;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct hists_stats {
|
||
|
|
u64 total_period;
|
||
|
|
u64 total_non_filtered_period;
|
||
|
|
u32 nr_samples;
|
||
|
|
u32 nr_non_filtered_samples;
|
||
|
|
u32 nr_lost_samples;
|
||
|
|
};
|
||
|
|
|
||
|
|
void events_stats__inc(struct events_stats *stats, u32 type);
|
||
|
|
|
||
|
|
size_t events_stats__fprintf(struct events_stats *stats, FILE *fp,
|
||
|
|
bool skip_empty);
|
||
|
|
|
||
|
|
#endif /* __PERF_EVENTS_STATS_ */
|