tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2#include <errno.h>
3#include <stdlib.h>
4#include <string.h>
5#include "evsel.h"
6#include "counts.h"
7#include <perf/threadmap.h>
8#include <linux/zalloc.h>
9
10struct perf_counts *perf_counts__new(int ncpus, int nthreads)
11{
12 struct perf_counts *counts = zalloc(sizeof(*counts));
13
14 if (counts) {
15 struct xyarray *values;
16
17 values = xyarray__new(ncpus, nthreads, sizeof(struct perf_counts_values));
18 if (!values) {
19 free(counts);
20 return NULL;
21 }
22
23 counts->values = values;
24
25 values = xyarray__new(ncpus, nthreads, sizeof(bool));
26 if (!values) {
27 xyarray__delete(counts->values);
28 free(counts);
29 return NULL;
30 }
31
32 counts->loaded = values;
33 }
34
35 return counts;
36}
37
38void perf_counts__delete(struct perf_counts *counts)
39{
40 if (counts) {
41 xyarray__delete(counts->loaded);
42 xyarray__delete(counts->values);
43 free(counts);
44 }
45}
46
47void perf_counts__reset(struct perf_counts *counts)
48{
49 xyarray__reset(counts->loaded);
50 xyarray__reset(counts->values);
51 memset(&counts->aggr, 0, sizeof(struct perf_counts_values));
52}
53
54void evsel__reset_counts(struct evsel *evsel)
55{
56 perf_counts__reset(evsel->counts);
57}
58
59int evsel__alloc_counts(struct evsel *evsel)
60{
61 struct perf_cpu_map *cpus = evsel__cpus(evsel);
62 int nthreads = perf_thread_map__nr(evsel->core.threads);
63
64 evsel->counts = perf_counts__new(perf_cpu_map__nr(cpus), nthreads);
65 return evsel->counts != NULL ? 0 : -ENOMEM;
66}
67
68void evsel__free_counts(struct evsel *evsel)
69{
70 perf_counts__delete(evsel->counts);
71 evsel->counts = NULL;
72}