diff options
author | Jiri Olsa <jolsa@redhat.com> | 2012-11-09 19:46:44 -0500 |
---|---|---|
committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-11-14 14:49:32 -0500 |
commit | a65b9c62be044b7956022e2823c5f079cf35b069 (patch) | |
tree | 8c69a5fd5c880d925ebebe56a0591e74f95fa6e3 /tools | |
parent | bd90517b374b1d6381a5509f55df1a9b7c33a6b1 (diff) |
perf tests: Move test__basic_mmap into separate object
Separating test__basic_mmap test from the builtin-test into mmap-basic
object.
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1352508412-16914-5-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r-- | tools/perf/Makefile | 1 | ||||
-rw-r--r-- | tools/perf/tests/builtin-test.c | 157 | ||||
-rw-r--r-- | tools/perf/tests/mmap-basic.c | 162 | ||||
-rw-r--r-- | tools/perf/tests/tests.h | 1 |
4 files changed, 164 insertions, 157 deletions
diff --git a/tools/perf/Makefile b/tools/perf/Makefile index d413e89c38e1..337489e827ca 100644 --- a/tools/perf/Makefile +++ b/tools/perf/Makefile | |||
@@ -434,6 +434,7 @@ LIB_OBJS += $(OUTPUT)tests/attr.o | |||
434 | LIB_OBJS += $(OUTPUT)tests/vmlinux-kallsyms.o | 434 | LIB_OBJS += $(OUTPUT)tests/vmlinux-kallsyms.o |
435 | LIB_OBJS += $(OUTPUT)tests/open-syscall.o | 435 | LIB_OBJS += $(OUTPUT)tests/open-syscall.o |
436 | LIB_OBJS += $(OUTPUT)tests/open-syscall-all-cpus.o | 436 | LIB_OBJS += $(OUTPUT)tests/open-syscall-all-cpus.o |
437 | LIB_OBJS += $(OUTPUT)tests/mmap-basic.o | ||
437 | LIB_OBJS += $(OUTPUT)tests/util.o | 438 | LIB_OBJS += $(OUTPUT)tests/util.o |
438 | 439 | ||
439 | BUILTIN_OBJS += $(OUTPUT)builtin-annotate.o | 440 | BUILTIN_OBJS += $(OUTPUT)builtin-annotate.o |
diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c index 98e883bc330b..609f59295326 100644 --- a/tools/perf/tests/builtin-test.c +++ b/tools/perf/tests/builtin-test.c | |||
@@ -30,163 +30,6 @@ | |||
30 | #include <sched.h> | 30 | #include <sched.h> |
31 | 31 | ||
32 | 32 | ||
33 | /* | ||
34 | * This test will generate random numbers of calls to some getpid syscalls, | ||
35 | * then establish an mmap for a group of events that are created to monitor | ||
36 | * the syscalls. | ||
37 | * | ||
38 | * It will receive the events, using mmap, use its PERF_SAMPLE_ID generated | ||
39 | * sample.id field to map back to its respective perf_evsel instance. | ||
40 | * | ||
41 | * Then it checks if the number of syscalls reported as perf events by | ||
42 | * the kernel corresponds to the number of syscalls made. | ||
43 | */ | ||
44 | static int test__basic_mmap(void) | ||
45 | { | ||
46 | int err = -1; | ||
47 | union perf_event *event; | ||
48 | struct thread_map *threads; | ||
49 | struct cpu_map *cpus; | ||
50 | struct perf_evlist *evlist; | ||
51 | struct perf_event_attr attr = { | ||
52 | .type = PERF_TYPE_TRACEPOINT, | ||
53 | .read_format = PERF_FORMAT_ID, | ||
54 | .sample_type = PERF_SAMPLE_ID, | ||
55 | .watermark = 0, | ||
56 | }; | ||
57 | cpu_set_t cpu_set; | ||
58 | const char *syscall_names[] = { "getsid", "getppid", "getpgrp", | ||
59 | "getpgid", }; | ||
60 | pid_t (*syscalls[])(void) = { (void *)getsid, getppid, getpgrp, | ||
61 | (void*)getpgid }; | ||
62 | #define nsyscalls ARRAY_SIZE(syscall_names) | ||
63 | int ids[nsyscalls]; | ||
64 | unsigned int nr_events[nsyscalls], | ||
65 | expected_nr_events[nsyscalls], i, j; | ||
66 | struct perf_evsel *evsels[nsyscalls], *evsel; | ||
67 | |||
68 | for (i = 0; i < nsyscalls; ++i) { | ||
69 | char name[64]; | ||
70 | |||
71 | snprintf(name, sizeof(name), "sys_enter_%s", syscall_names[i]); | ||
72 | ids[i] = trace_event__id(name); | ||
73 | if (ids[i] < 0) { | ||
74 | pr_debug("Is debugfs mounted on /sys/kernel/debug?\n"); | ||
75 | return -1; | ||
76 | } | ||
77 | nr_events[i] = 0; | ||
78 | expected_nr_events[i] = random() % 257; | ||
79 | } | ||
80 | |||
81 | threads = thread_map__new(-1, getpid(), UINT_MAX); | ||
82 | if (threads == NULL) { | ||
83 | pr_debug("thread_map__new\n"); | ||
84 | return -1; | ||
85 | } | ||
86 | |||
87 | cpus = cpu_map__new(NULL); | ||
88 | if (cpus == NULL) { | ||
89 | pr_debug("cpu_map__new\n"); | ||
90 | goto out_free_threads; | ||
91 | } | ||
92 | |||
93 | CPU_ZERO(&cpu_set); | ||
94 | CPU_SET(cpus->map[0], &cpu_set); | ||
95 | sched_setaffinity(0, sizeof(cpu_set), &cpu_set); | ||
96 | if (sched_setaffinity(0, sizeof(cpu_set), &cpu_set) < 0) { | ||
97 | pr_debug("sched_setaffinity() failed on CPU %d: %s ", | ||
98 | cpus->map[0], strerror(errno)); | ||
99 | goto out_free_cpus; | ||
100 | } | ||
101 | |||
102 | evlist = perf_evlist__new(cpus, threads); | ||
103 | if (evlist == NULL) { | ||
104 | pr_debug("perf_evlist__new\n"); | ||
105 | goto out_free_cpus; | ||
106 | } | ||
107 | |||
108 | /* anonymous union fields, can't be initialized above */ | ||
109 | attr.wakeup_events = 1; | ||
110 | attr.sample_period = 1; | ||
111 | |||
112 | for (i = 0; i < nsyscalls; ++i) { | ||
113 | attr.config = ids[i]; | ||
114 | evsels[i] = perf_evsel__new(&attr, i); | ||
115 | if (evsels[i] == NULL) { | ||
116 | pr_debug("perf_evsel__new\n"); | ||
117 | goto out_free_evlist; | ||
118 | } | ||
119 | |||
120 | perf_evlist__add(evlist, evsels[i]); | ||
121 | |||
122 | if (perf_evsel__open(evsels[i], cpus, threads) < 0) { | ||
123 | pr_debug("failed to open counter: %s, " | ||
124 | "tweak /proc/sys/kernel/perf_event_paranoid?\n", | ||
125 | strerror(errno)); | ||
126 | goto out_close_fd; | ||
127 | } | ||
128 | } | ||
129 | |||
130 | if (perf_evlist__mmap(evlist, 128, true) < 0) { | ||
131 | pr_debug("failed to mmap events: %d (%s)\n", errno, | ||
132 | strerror(errno)); | ||
133 | goto out_close_fd; | ||
134 | } | ||
135 | |||
136 | for (i = 0; i < nsyscalls; ++i) | ||
137 | for (j = 0; j < expected_nr_events[i]; ++j) { | ||
138 | int foo = syscalls[i](); | ||
139 | ++foo; | ||
140 | } | ||
141 | |||
142 | while ((event = perf_evlist__mmap_read(evlist, 0)) != NULL) { | ||
143 | struct perf_sample sample; | ||
144 | |||
145 | if (event->header.type != PERF_RECORD_SAMPLE) { | ||
146 | pr_debug("unexpected %s event\n", | ||
147 | perf_event__name(event->header.type)); | ||
148 | goto out_munmap; | ||
149 | } | ||
150 | |||
151 | err = perf_evlist__parse_sample(evlist, event, &sample); | ||
152 | if (err) { | ||
153 | pr_err("Can't parse sample, err = %d\n", err); | ||
154 | goto out_munmap; | ||
155 | } | ||
156 | |||
157 | evsel = perf_evlist__id2evsel(evlist, sample.id); | ||
158 | if (evsel == NULL) { | ||
159 | pr_debug("event with id %" PRIu64 | ||
160 | " doesn't map to an evsel\n", sample.id); | ||
161 | goto out_munmap; | ||
162 | } | ||
163 | nr_events[evsel->idx]++; | ||
164 | } | ||
165 | |||
166 | list_for_each_entry(evsel, &evlist->entries, node) { | ||
167 | if (nr_events[evsel->idx] != expected_nr_events[evsel->idx]) { | ||
168 | pr_debug("expected %d %s events, got %d\n", | ||
169 | expected_nr_events[evsel->idx], | ||
170 | perf_evsel__name(evsel), nr_events[evsel->idx]); | ||
171 | goto out_munmap; | ||
172 | } | ||
173 | } | ||
174 | |||
175 | err = 0; | ||
176 | out_munmap: | ||
177 | perf_evlist__munmap(evlist); | ||
178 | out_close_fd: | ||
179 | for (i = 0; i < nsyscalls; ++i) | ||
180 | perf_evsel__close_fd(evsels[i], 1, threads->nr); | ||
181 | out_free_evlist: | ||
182 | perf_evlist__delete(evlist); | ||
183 | out_free_cpus: | ||
184 | cpu_map__delete(cpus); | ||
185 | out_free_threads: | ||
186 | thread_map__delete(threads); | ||
187 | return err; | ||
188 | #undef nsyscalls | ||
189 | } | ||
190 | 33 | ||
191 | static int sched__get_first_possible_cpu(pid_t pid, cpu_set_t *maskp) | 34 | static int sched__get_first_possible_cpu(pid_t pid, cpu_set_t *maskp) |
192 | { | 35 | { |
diff --git a/tools/perf/tests/mmap-basic.c b/tools/perf/tests/mmap-basic.c new file mode 100644 index 000000000000..e1746811e14b --- /dev/null +++ b/tools/perf/tests/mmap-basic.c | |||
@@ -0,0 +1,162 @@ | |||
1 | #include "evlist.h" | ||
2 | #include "evsel.h" | ||
3 | #include "thread_map.h" | ||
4 | #include "cpumap.h" | ||
5 | #include "tests.h" | ||
6 | |||
7 | /* | ||
8 | * This test will generate random numbers of calls to some getpid syscalls, | ||
9 | * then establish an mmap for a group of events that are created to monitor | ||
10 | * the syscalls. | ||
11 | * | ||
12 | * It will receive the events, using mmap, use its PERF_SAMPLE_ID generated | ||
13 | * sample.id field to map back to its respective perf_evsel instance. | ||
14 | * | ||
15 | * Then it checks if the number of syscalls reported as perf events by | ||
16 | * the kernel corresponds to the number of syscalls made. | ||
17 | */ | ||
18 | int test__basic_mmap(void) | ||
19 | { | ||
20 | int err = -1; | ||
21 | union perf_event *event; | ||
22 | struct thread_map *threads; | ||
23 | struct cpu_map *cpus; | ||
24 | struct perf_evlist *evlist; | ||
25 | struct perf_event_attr attr = { | ||
26 | .type = PERF_TYPE_TRACEPOINT, | ||
27 | .read_format = PERF_FORMAT_ID, | ||
28 | .sample_type = PERF_SAMPLE_ID, | ||
29 | .watermark = 0, | ||
30 | }; | ||
31 | cpu_set_t cpu_set; | ||
32 | const char *syscall_names[] = { "getsid", "getppid", "getpgrp", | ||
33 | "getpgid", }; | ||
34 | pid_t (*syscalls[])(void) = { (void *)getsid, getppid, getpgrp, | ||
35 | (void*)getpgid }; | ||
36 | #define nsyscalls ARRAY_SIZE(syscall_names) | ||
37 | int ids[nsyscalls]; | ||
38 | unsigned int nr_events[nsyscalls], | ||
39 | expected_nr_events[nsyscalls], i, j; | ||
40 | struct perf_evsel *evsels[nsyscalls], *evsel; | ||
41 | |||
42 | for (i = 0; i < nsyscalls; ++i) { | ||
43 | char name[64]; | ||
44 | |||
45 | snprintf(name, sizeof(name), "sys_enter_%s", syscall_names[i]); | ||
46 | ids[i] = trace_event__id(name); | ||
47 | if (ids[i] < 0) { | ||
48 | pr_debug("Is debugfs mounted on /sys/kernel/debug?\n"); | ||
49 | return -1; | ||
50 | } | ||
51 | nr_events[i] = 0; | ||
52 | expected_nr_events[i] = random() % 257; | ||
53 | } | ||
54 | |||
55 | threads = thread_map__new(-1, getpid(), UINT_MAX); | ||
56 | if (threads == NULL) { | ||
57 | pr_debug("thread_map__new\n"); | ||
58 | return -1; | ||
59 | } | ||
60 | |||
61 | cpus = cpu_map__new(NULL); | ||
62 | if (cpus == NULL) { | ||
63 | pr_debug("cpu_map__new\n"); | ||
64 | goto out_free_threads; | ||
65 | } | ||
66 | |||
67 | CPU_ZERO(&cpu_set); | ||
68 | CPU_SET(cpus->map[0], &cpu_set); | ||
69 | sched_setaffinity(0, sizeof(cpu_set), &cpu_set); | ||
70 | if (sched_setaffinity(0, sizeof(cpu_set), &cpu_set) < 0) { | ||
71 | pr_debug("sched_setaffinity() failed on CPU %d: %s ", | ||
72 | cpus->map[0], strerror(errno)); | ||
73 | goto out_free_cpus; | ||
74 | } | ||
75 | |||
76 | evlist = perf_evlist__new(cpus, threads); | ||
77 | if (evlist == NULL) { | ||
78 | pr_debug("perf_evlist__new\n"); | ||
79 | goto out_free_cpus; | ||
80 | } | ||
81 | |||
82 | /* anonymous union fields, can't be initialized above */ | ||
83 | attr.wakeup_events = 1; | ||
84 | attr.sample_period = 1; | ||
85 | |||
86 | for (i = 0; i < nsyscalls; ++i) { | ||
87 | attr.config = ids[i]; | ||
88 | evsels[i] = perf_evsel__new(&attr, i); | ||
89 | if (evsels[i] == NULL) { | ||
90 | pr_debug("perf_evsel__new\n"); | ||
91 | goto out_free_evlist; | ||
92 | } | ||
93 | |||
94 | perf_evlist__add(evlist, evsels[i]); | ||
95 | |||
96 | if (perf_evsel__open(evsels[i], cpus, threads) < 0) { | ||
97 | pr_debug("failed to open counter: %s, " | ||
98 | "tweak /proc/sys/kernel/perf_event_paranoid?\n", | ||
99 | strerror(errno)); | ||
100 | goto out_close_fd; | ||
101 | } | ||
102 | } | ||
103 | |||
104 | if (perf_evlist__mmap(evlist, 128, true) < 0) { | ||
105 | pr_debug("failed to mmap events: %d (%s)\n", errno, | ||
106 | strerror(errno)); | ||
107 | goto out_close_fd; | ||
108 | } | ||
109 | |||
110 | for (i = 0; i < nsyscalls; ++i) | ||
111 | for (j = 0; j < expected_nr_events[i]; ++j) { | ||
112 | int foo = syscalls[i](); | ||
113 | ++foo; | ||
114 | } | ||
115 | |||
116 | while ((event = perf_evlist__mmap_read(evlist, 0)) != NULL) { | ||
117 | struct perf_sample sample; | ||
118 | |||
119 | if (event->header.type != PERF_RECORD_SAMPLE) { | ||
120 | pr_debug("unexpected %s event\n", | ||
121 | perf_event__name(event->header.type)); | ||
122 | goto out_munmap; | ||
123 | } | ||
124 | |||
125 | err = perf_evlist__parse_sample(evlist, event, &sample); | ||
126 | if (err) { | ||
127 | pr_err("Can't parse sample, err = %d\n", err); | ||
128 | goto out_munmap; | ||
129 | } | ||
130 | |||
131 | evsel = perf_evlist__id2evsel(evlist, sample.id); | ||
132 | if (evsel == NULL) { | ||
133 | pr_debug("event with id %" PRIu64 | ||
134 | " doesn't map to an evsel\n", sample.id); | ||
135 | goto out_munmap; | ||
136 | } | ||
137 | nr_events[evsel->idx]++; | ||
138 | } | ||
139 | |||
140 | list_for_each_entry(evsel, &evlist->entries, node) { | ||
141 | if (nr_events[evsel->idx] != expected_nr_events[evsel->idx]) { | ||
142 | pr_debug("expected %d %s events, got %d\n", | ||
143 | expected_nr_events[evsel->idx], | ||
144 | perf_evsel__name(evsel), nr_events[evsel->idx]); | ||
145 | goto out_munmap; | ||
146 | } | ||
147 | } | ||
148 | |||
149 | err = 0; | ||
150 | out_munmap: | ||
151 | perf_evlist__munmap(evlist); | ||
152 | out_close_fd: | ||
153 | for (i = 0; i < nsyscalls; ++i) | ||
154 | perf_evsel__close_fd(evsels[i], 1, threads->nr); | ||
155 | out_free_evlist: | ||
156 | perf_evlist__delete(evlist); | ||
157 | out_free_cpus: | ||
158 | cpu_map__delete(cpus); | ||
159 | out_free_threads: | ||
160 | thread_map__delete(threads); | ||
161 | return err; | ||
162 | } | ||
diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h index c2887f226db3..1a925ddeae7a 100644 --- a/tools/perf/tests/tests.h +++ b/tools/perf/tests/tests.h | |||
@@ -5,6 +5,7 @@ | |||
5 | int test__vmlinux_matches_kallsyms(void); | 5 | int test__vmlinux_matches_kallsyms(void); |
6 | int test__open_syscall_event(void); | 6 | int test__open_syscall_event(void); |
7 | int test__open_syscall_event_on_all_cpus(void); | 7 | int test__open_syscall_event_on_all_cpus(void); |
8 | int test__basic_mmap(void); | ||
8 | 9 | ||
9 | /* Util */ | 10 | /* Util */ |
10 | int trace_event__id(const char *evname); | 11 | int trace_event__id(const char *evname); |