Merge tag 'cgroup-for-6.11-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel...
[linux-block.git] / tools / perf / util / events_stats.h
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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __PERF_EVENTS_STATS_
3#define __PERF_EVENTS_STATS_
4
5#include <stdio.h>
6#include <perf/event.h>
7#include <linux/types.h>
8#include "auxtrace.h"
9
10/*
11 * The kernel collects the number of events it couldn't send in a stretch and
12 * when possible sends this number in a PERF_RECORD_LOST event. The number of
13 * such "chunks" of lost events is stored in .nr_events[PERF_EVENT_LOST] while
14 * total_lost tells exactly how many events the kernel in fact lost, i.e. it is
15 * the sum of all struct perf_record_lost.lost fields reported.
16 *
17 * The kernel discards mixed up samples and sends the number in a
18 * PERF_RECORD_LOST_SAMPLES event. The number of lost-samples events is stored
19 * in .nr_events[PERF_RECORD_LOST_SAMPLES] while total_lost_samples tells
20 * exactly how many samples the kernel in fact dropped, i.e. it is the sum of
21 * all struct perf_record_lost_samples.lost fields reported.
22 *
23 * The total_period is needed because by default auto-freq is used, so
4d39c89f 24 * multiplying nr_events[PERF_EVENT_SAMPLE] by a frequency isn't possible to get
987f5cbd 25 * the total number of low level events, it is necessary to sum all struct
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26 * perf_record_sample.period and stash the result in total_period.
27 */
28struct events_stats {
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29 u64 total_lost;
30 u64 total_lost_samples;
31 u64 total_aux_lost;
32 u64 total_aux_partial;
c68b421d 33 u64 total_aux_collision;
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34 u64 total_invalid_chains;
35 u32 nr_events[PERF_RECORD_HEADER_MAX];
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36 u32 nr_lost_warned;
37 u32 nr_unknown_events;
38 u32 nr_invalid_chains;
39 u32 nr_unknown_id;
40 u32 nr_unprocessable_samples;
41 u32 nr_auxtrace_errors[PERF_AUXTRACE_ERROR_MAX];
42 u32 nr_proc_map_timeout;
43};
44
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45struct hists_stats {
46 u64 total_period;
47 u64 total_non_filtered_period;
48 u32 nr_samples;
49 u32 nr_non_filtered_samples;
75b37db0 50 u32 nr_lost_samples;
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51};
52
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53void events_stats__inc(struct events_stats *stats, u32 type);
54
411ee135 55size_t events_stats__fprintf(struct events_stats *stats, FILE *fp);
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56
57#endif /* __PERF_EVENTS_STATS_ */