Commit | Line | Data |
---|---|---|
b31d660d JO |
1 | #include <linux/compiler.h> |
2 | #include <string.h> | |
3 | #include "tests.h" | |
4 | #include "evlist.h" | |
5 | #include "evsel.h" | |
6 | #include "util.h" | |
7 | #include "debug.h" | |
8 | #include "thread_map.h" | |
9 | #include "target.h" | |
10 | ||
11 | static int attach__enable_on_exec(struct perf_evlist *evlist) | |
12 | { | |
13 | struct perf_evsel *evsel = perf_evlist__last(evlist); | |
14 | struct target target = { | |
15 | .uid = UINT_MAX, | |
16 | }; | |
17 | const char *argv[] = { "true", NULL, }; | |
18 | char sbuf[STRERR_BUFSIZE]; | |
19 | int err; | |
20 | ||
21 | pr_debug("attaching to spawned child, enable on exec\n"); | |
22 | ||
23 | err = perf_evlist__create_maps(evlist, &target); | |
24 | if (err < 0) { | |
25 | pr_debug("Not enough memory to create thread/cpu maps\n"); | |
26 | return err; | |
27 | } | |
28 | ||
29 | err = perf_evlist__prepare_workload(evlist, &target, argv, false, NULL); | |
30 | if (err < 0) { | |
31 | pr_debug("Couldn't run the workload!\n"); | |
32 | return err; | |
33 | } | |
34 | ||
35 | evsel->attr.enable_on_exec = 1; | |
36 | ||
37 | err = perf_evlist__open(evlist); | |
38 | if (err < 0) { | |
39 | pr_debug("perf_evlist__open: %s\n", | |
40 | strerror_r(errno, sbuf, sizeof(sbuf))); | |
41 | return err; | |
42 | } | |
43 | ||
44 | return perf_evlist__start_workload(evlist) == 1 ? TEST_OK : TEST_FAIL; | |
45 | } | |
46 | ||
47 | static int detach__enable_on_exec(struct perf_evlist *evlist) | |
48 | { | |
49 | waitpid(evlist->workload.pid, NULL, 0); | |
50 | return 0; | |
51 | } | |
52 | ||
53 | static int attach__current_disabled(struct perf_evlist *evlist) | |
54 | { | |
55 | struct perf_evsel *evsel = perf_evlist__last(evlist); | |
56 | struct thread_map *threads; | |
57 | int err; | |
58 | ||
59 | pr_debug("attaching to current thread as disabled\n"); | |
60 | ||
61 | threads = thread_map__new(-1, getpid(), UINT_MAX); | |
62 | if (threads == NULL) { | |
63 | pr_debug("thread_map__new\n"); | |
64 | return -1; | |
65 | } | |
66 | ||
67 | evsel->attr.disabled = 1; | |
68 | ||
69 | err = perf_evsel__open_per_thread(evsel, threads); | |
70 | if (err) { | |
71 | pr_debug("Failed to open event cpu-clock:u\n"); | |
72 | return err; | |
73 | } | |
74 | ||
75 | thread_map__put(threads); | |
76 | return perf_evsel__enable(evsel) == 0 ? TEST_OK : TEST_FAIL; | |
77 | } | |
78 | ||
79 | static int attach__current_enabled(struct perf_evlist *evlist) | |
80 | { | |
81 | struct perf_evsel *evsel = perf_evlist__last(evlist); | |
82 | struct thread_map *threads; | |
83 | int err; | |
84 | ||
85 | pr_debug("attaching to current thread as enabled\n"); | |
86 | ||
87 | threads = thread_map__new(-1, getpid(), UINT_MAX); | |
88 | if (threads == NULL) { | |
89 | pr_debug("failed to call thread_map__new\n"); | |
90 | return -1; | |
91 | } | |
92 | ||
93 | err = perf_evsel__open_per_thread(evsel, threads); | |
94 | ||
95 | thread_map__put(threads); | |
96 | return err == 0 ? TEST_OK : TEST_FAIL; | |
97 | } | |
98 | ||
99 | static int detach__disable(struct perf_evlist *evlist) | |
100 | { | |
101 | struct perf_evsel *evsel = perf_evlist__last(evlist); | |
102 | ||
103 | return perf_evsel__enable(evsel); | |
104 | } | |
105 | ||
106 | static int attach__cpu_disabled(struct perf_evlist *evlist) | |
107 | { | |
108 | struct perf_evsel *evsel = perf_evlist__last(evlist); | |
109 | struct cpu_map *cpus; | |
110 | int err; | |
111 | ||
112 | pr_debug("attaching to CPU 0 as enabled\n"); | |
113 | ||
114 | cpus = cpu_map__new("0"); | |
115 | if (cpus == NULL) { | |
116 | pr_debug("failed to call cpu_map__new\n"); | |
117 | return -1; | |
118 | } | |
119 | ||
120 | evsel->attr.disabled = 1; | |
121 | ||
122 | err = perf_evsel__open_per_cpu(evsel, cpus); | |
123 | if (err) { | |
124 | if (err == -EACCES) | |
125 | return TEST_SKIP; | |
126 | ||
127 | pr_debug("Failed to open event cpu-clock:u\n"); | |
128 | return err; | |
129 | } | |
130 | ||
131 | cpu_map__put(cpus); | |
132 | return perf_evsel__enable(evsel); | |
133 | } | |
134 | ||
135 | static int attach__cpu_enabled(struct perf_evlist *evlist) | |
136 | { | |
137 | struct perf_evsel *evsel = perf_evlist__last(evlist); | |
138 | struct cpu_map *cpus; | |
139 | int err; | |
140 | ||
141 | pr_debug("attaching to CPU 0 as enabled\n"); | |
142 | ||
143 | cpus = cpu_map__new("0"); | |
144 | if (cpus == NULL) { | |
145 | pr_debug("failed to call cpu_map__new\n"); | |
146 | return -1; | |
147 | } | |
148 | ||
149 | err = perf_evsel__open_per_cpu(evsel, cpus); | |
150 | if (err == -EACCES) | |
151 | return TEST_SKIP; | |
152 | ||
153 | cpu_map__put(cpus); | |
154 | return err ? TEST_FAIL : TEST_OK; | |
155 | } | |
156 | ||
157 | static int test_times(int (attach)(struct perf_evlist *), | |
158 | int (detach)(struct perf_evlist *)) | |
159 | { | |
160 | struct perf_counts_values count; | |
161 | struct perf_evlist *evlist = NULL; | |
162 | struct perf_evsel *evsel; | |
163 | int err = -1, i; | |
164 | ||
165 | evlist = perf_evlist__new(); | |
166 | if (!evlist) { | |
167 | pr_debug("failed to create event list\n"); | |
168 | goto out_err; | |
169 | } | |
170 | ||
171 | err = parse_events(evlist, "cpu-clock:u", NULL); | |
172 | if (err) { | |
173 | pr_debug("failed to parse event cpu-clock:u\n"); | |
174 | goto out_err; | |
175 | } | |
176 | ||
177 | evsel = perf_evlist__last(evlist); | |
178 | evsel->attr.read_format |= | |
179 | PERF_FORMAT_TOTAL_TIME_ENABLED | | |
180 | PERF_FORMAT_TOTAL_TIME_RUNNING; | |
181 | ||
182 | err = attach(evlist); | |
183 | if (err == TEST_SKIP) { | |
184 | pr_debug(" SKIP : not enough rights\n"); | |
185 | return err; | |
186 | } | |
187 | ||
188 | TEST_ASSERT_VAL("failed to attach", !err); | |
189 | ||
190 | for (i = 0; i < 100000000; i++) { } | |
191 | ||
192 | TEST_ASSERT_VAL("failed to detach", !detach(evlist)); | |
193 | ||
194 | perf_evsel__read(evsel, 0, 0, &count); | |
195 | ||
196 | err = !(count.ena == count.run); | |
197 | ||
198 | pr_debug(" %s: ena %" PRIu64", run %" PRIu64"\n", | |
199 | !err ? "OK " : "FAILED", | |
200 | count.ena, count.run); | |
201 | ||
202 | out_err: | |
203 | if (evlist) | |
204 | perf_evlist__delete(evlist); | |
205 | return !err ? TEST_OK : TEST_FAIL; | |
206 | } | |
207 | ||
208 | /* | |
209 | * This test creates software event 'cpu-clock' | |
210 | * attaches it in several ways (explained below) | |
211 | * and checks that enabled and running times | |
212 | * match. | |
213 | */ | |
214 | int test__event_times(int subtest __maybe_unused) | |
215 | { | |
216 | int err, ret = 0; | |
217 | ||
218 | #define _T(attach, detach) \ | |
219 | err = test_times(attach, detach); \ | |
220 | if (err && (ret == TEST_OK || ret == TEST_SKIP)) \ | |
221 | ret = err; | |
222 | ||
223 | /* attach on newly spawned process after exec */ | |
224 | _T(attach__enable_on_exec, detach__enable_on_exec) | |
225 | /* attach on current process as enabled */ | |
226 | _T(attach__current_enabled, detach__disable) | |
227 | /* attach on current process as disabled */ | |
228 | _T(attach__current_disabled, detach__disable) | |
229 | /* attach on cpu as disabled */ | |
230 | _T(attach__cpu_disabled, detach__disable) | |
231 | /* attach on cpu as enabled */ | |
232 | _T(attach__cpu_enabled, detach__disable) | |
233 | ||
234 | #undef _T | |
235 | return ret; | |
236 | } |