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47729258 ACM |
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 | */ | |
28 | struct 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 | ||
0f0abbac NK |
45 | struct 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; |
0f0abbac NK |
51 | }; |
52 | ||
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53 | void events_stats__inc(struct events_stats *stats, u32 type); |
54 | ||
411ee135 | 55 | size_t events_stats__fprintf(struct events_stats *stats, FILE *fp); |
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56 | |
57 | #endif /* __PERF_EVENTS_STATS_ */ |