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 "tests.h"
3#include <stdio.h>
4#include "cpumap.h"
5#include "event.h"
6#include "util/synthetic-events.h"
7#include <string.h>
8#include <linux/bitops.h>
9#include <perf/cpumap.h>
10#include "debug.h"
11
12struct machine;
13
14static int process_event_mask(struct perf_tool *tool __maybe_unused,
15 union perf_event *event,
16 struct perf_sample *sample __maybe_unused,
17 struct machine *machine __maybe_unused)
18{
19 struct perf_record_cpu_map *map_event = &event->cpu_map;
20 struct perf_record_cpu_map_data *data;
21 struct perf_cpu_map *map;
22 int i;
23 unsigned int long_size;
24
25 data = &map_event->data;
26
27 TEST_ASSERT_VAL("wrong type", data->type == PERF_CPU_MAP__MASK);
28
29 long_size = data->mask32_data.long_size;
30
31 TEST_ASSERT_VAL("wrong long_size", long_size == 4 || long_size == 8);
32
33 TEST_ASSERT_VAL("wrong nr", data->mask32_data.nr == 1);
34
35 for (i = 0; i < 20; i++) {
36 TEST_ASSERT_VAL("wrong cpu", perf_record_cpu_map_data__test_bit(i, data));
37 }
38
39 map = cpu_map__new_data(data);
40 TEST_ASSERT_VAL("wrong nr", perf_cpu_map__nr(map) == 20);
41
42 for (i = 0; i < 20; i++) {
43 TEST_ASSERT_VAL("wrong cpu", perf_cpu_map__cpu(map, i).cpu == i);
44 }
45
46 perf_cpu_map__put(map);
47 return 0;
48}
49
50static int process_event_cpus(struct perf_tool *tool __maybe_unused,
51 union perf_event *event,
52 struct perf_sample *sample __maybe_unused,
53 struct machine *machine __maybe_unused)
54{
55 struct perf_record_cpu_map *map_event = &event->cpu_map;
56 struct perf_record_cpu_map_data *data;
57 struct perf_cpu_map *map;
58
59 data = &map_event->data;
60
61 TEST_ASSERT_VAL("wrong type", data->type == PERF_CPU_MAP__CPUS);
62
63 TEST_ASSERT_VAL("wrong nr", data->cpus_data.nr == 2);
64 TEST_ASSERT_VAL("wrong cpu", data->cpus_data.cpu[0] == 1);
65 TEST_ASSERT_VAL("wrong cpu", data->cpus_data.cpu[1] == 256);
66
67 map = cpu_map__new_data(data);
68 TEST_ASSERT_VAL("wrong nr", perf_cpu_map__nr(map) == 2);
69 TEST_ASSERT_VAL("wrong cpu", perf_cpu_map__cpu(map, 0).cpu == 1);
70 TEST_ASSERT_VAL("wrong cpu", perf_cpu_map__cpu(map, 1).cpu == 256);
71 TEST_ASSERT_VAL("wrong refcnt", refcount_read(&map->refcnt) == 1);
72 perf_cpu_map__put(map);
73 return 0;
74}
75
76
77static int test__cpu_map_synthesize(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
78{
79 struct perf_cpu_map *cpus;
80
81 /* This one is better stores in mask. */
82 cpus = perf_cpu_map__new("0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19");
83
84 TEST_ASSERT_VAL("failed to synthesize map",
85 !perf_event__synthesize_cpu_map(NULL, cpus, process_event_mask, NULL));
86
87 perf_cpu_map__put(cpus);
88
89 /* This one is better stores in cpu values. */
90 cpus = perf_cpu_map__new("1,256");
91
92 TEST_ASSERT_VAL("failed to synthesize map",
93 !perf_event__synthesize_cpu_map(NULL, cpus, process_event_cpus, NULL));
94
95 perf_cpu_map__put(cpus);
96 return 0;
97}
98
99static int cpu_map_print(const char *str)
100{
101 struct perf_cpu_map *map = perf_cpu_map__new(str);
102 char buf[100];
103
104 if (!map)
105 return -1;
106
107 cpu_map__snprint(map, buf, sizeof(buf));
108 perf_cpu_map__put(map);
109
110 return !strcmp(buf, str);
111}
112
113static int test__cpu_map_print(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
114{
115 TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1"));
116 TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1,5"));
117 TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1,3,5,7,9,11,13,15,17,19,21-40"));
118 TEST_ASSERT_VAL("failed to convert map", cpu_map_print("2-5"));
119 TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1,3-6,8-10,24,35-37"));
120 TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1,3-6,8-10,24,35-37"));
121 TEST_ASSERT_VAL("failed to convert map", cpu_map_print("1-10,12-20,22-30,32-40"));
122 return 0;
123}
124
125static int test__cpu_map_merge(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
126{
127 struct perf_cpu_map *a = perf_cpu_map__new("4,2,1");
128 struct perf_cpu_map *b = perf_cpu_map__new("4,5,7");
129 struct perf_cpu_map *c = perf_cpu_map__merge(a, b);
130 char buf[100];
131
132 TEST_ASSERT_VAL("failed to merge map: bad nr", perf_cpu_map__nr(c) == 5);
133 cpu_map__snprint(c, buf, sizeof(buf));
134 TEST_ASSERT_VAL("failed to merge map: bad result", !strcmp(buf, "1-2,4-5,7"));
135 perf_cpu_map__put(b);
136 perf_cpu_map__put(c);
137 return 0;
138}
139
140DEFINE_SUITE("Synthesize cpu map", cpu_map_synthesize);
141DEFINE_SUITE("Print cpu map", cpu_map_print);
142DEFINE_SUITE("Merge cpu map", cpu_map_merge);