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authorJiri Olsa <jolsa@redhat.com>2012-11-09 19:46:42 -0500
committerArnaldo Carvalho de Melo <acme@redhat.com>2012-11-14 14:49:17 -0500
commitd3b59a38bcdab4248134023c2c5dfabee5a4878e (patch)
treeea7dad332d4fe0ecbf84ffc06cc9660df32effb8 /tools
parent0a4e1ae6808a28a92573550603121b146b11312e (diff)
perf tests: Move test__open_syscall_event into separate object
Separating test__open_syscall_event test from the builtin-test into open-syscall object. Adding util object under tests directory to gather help functions common to more tests. 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/1352508412-16914-3-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/Makefile2
-rw-r--r--tools/perf/tests/builtin-test.c84
-rw-r--r--tools/perf/tests/open-syscall.c66
-rw-r--r--tools/perf/tests/tests.h5
-rw-r--r--tools/perf/tests/util.c30
5 files changed, 103 insertions, 84 deletions
diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 7c7ba4d6dafd..69f582c53cbb 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -432,6 +432,8 @@ LIB_OBJS += $(OUTPUT)tests/parse-events.o
432LIB_OBJS += $(OUTPUT)tests/dso-data.o 432LIB_OBJS += $(OUTPUT)tests/dso-data.o
433LIB_OBJS += $(OUTPUT)tests/attr.o 433LIB_OBJS += $(OUTPUT)tests/attr.o
434LIB_OBJS += $(OUTPUT)tests/vmlinux-kallsyms.o 434LIB_OBJS += $(OUTPUT)tests/vmlinux-kallsyms.o
435LIB_OBJS += $(OUTPUT)tests/open-syscall.o
436LIB_OBJS += $(OUTPUT)tests/util.o
435 437
436BUILTIN_OBJS += $(OUTPUT)builtin-annotate.o 438BUILTIN_OBJS += $(OUTPUT)builtin-annotate.o
437BUILTIN_OBJS += $(OUTPUT)builtin-bench.o 439BUILTIN_OBJS += $(OUTPUT)builtin-bench.o
diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c
index 5bc9063bf30f..b6b1e46a51c6 100644
--- a/tools/perf/tests/builtin-test.c
+++ b/tools/perf/tests/builtin-test.c
@@ -27,90 +27,6 @@
27 27
28#include "tests.h" 28#include "tests.h"
29 29
30static int trace_event__id(const char *evname)
31{
32 char *filename;
33 int err = -1, fd;
34
35 if (asprintf(&filename,
36 "%s/syscalls/%s/id",
37 tracing_events_path, evname) < 0)
38 return -1;
39
40 fd = open(filename, O_RDONLY);
41 if (fd >= 0) {
42 char id[16];
43 if (read(fd, id, sizeof(id)) > 0)
44 err = atoi(id);
45 close(fd);
46 }
47
48 free(filename);
49 return err;
50}
51
52static int test__open_syscall_event(void)
53{
54 int err = -1, fd;
55 struct thread_map *threads;
56 struct perf_evsel *evsel;
57 struct perf_event_attr attr;
58 unsigned int nr_open_calls = 111, i;
59 int id = trace_event__id("sys_enter_open");
60
61 if (id < 0) {
62 pr_debug("is debugfs mounted on /sys/kernel/debug?\n");
63 return -1;
64 }
65
66 threads = thread_map__new(-1, getpid(), UINT_MAX);
67 if (threads == NULL) {
68 pr_debug("thread_map__new\n");
69 return -1;
70 }
71
72 memset(&attr, 0, sizeof(attr));
73 attr.type = PERF_TYPE_TRACEPOINT;
74 attr.config = id;
75 evsel = perf_evsel__new(&attr, 0);
76 if (evsel == NULL) {
77 pr_debug("perf_evsel__new\n");
78 goto out_thread_map_delete;
79 }
80
81 if (perf_evsel__open_per_thread(evsel, threads) < 0) {
82 pr_debug("failed to open counter: %s, "
83 "tweak /proc/sys/kernel/perf_event_paranoid?\n",
84 strerror(errno));
85 goto out_evsel_delete;
86 }
87
88 for (i = 0; i < nr_open_calls; ++i) {
89 fd = open("/etc/passwd", O_RDONLY);
90 close(fd);
91 }
92
93 if (perf_evsel__read_on_cpu(evsel, 0, 0) < 0) {
94 pr_debug("perf_evsel__read_on_cpu\n");
95 goto out_close_fd;
96 }
97
98 if (evsel->counts->cpu[0].val != nr_open_calls) {
99 pr_debug("perf_evsel__read_on_cpu: expected to intercept %d calls, got %" PRIu64 "\n",
100 nr_open_calls, evsel->counts->cpu[0].val);
101 goto out_close_fd;
102 }
103
104 err = 0;
105out_close_fd:
106 perf_evsel__close_fd(evsel, 1, threads->nr);
107out_evsel_delete:
108 perf_evsel__delete(evsel);
109out_thread_map_delete:
110 thread_map__delete(threads);
111 return err;
112}
113
114#include <sched.h> 30#include <sched.h>
115 31
116static int test__open_syscall_event_on_all_cpus(void) 32static int test__open_syscall_event_on_all_cpus(void)
diff --git a/tools/perf/tests/open-syscall.c b/tools/perf/tests/open-syscall.c
new file mode 100644
index 000000000000..98be8b518b4f
--- /dev/null
+++ b/tools/perf/tests/open-syscall.c
@@ -0,0 +1,66 @@
1#include "thread_map.h"
2#include "evsel.h"
3#include "debug.h"
4#include "tests.h"
5
6int test__open_syscall_event(void)
7{
8 int err = -1, fd;
9 struct thread_map *threads;
10 struct perf_evsel *evsel;
11 struct perf_event_attr attr;
12 unsigned int nr_open_calls = 111, i;
13 int id = trace_event__id("sys_enter_open");
14
15 if (id < 0) {
16 pr_debug("is debugfs mounted on /sys/kernel/debug?\n");
17 return -1;
18 }
19
20 threads = thread_map__new(-1, getpid(), UINT_MAX);
21 if (threads == NULL) {
22 pr_debug("thread_map__new\n");
23 return -1;
24 }
25
26 memset(&attr, 0, sizeof(attr));
27 attr.type = PERF_TYPE_TRACEPOINT;
28 attr.config = id;
29 evsel = perf_evsel__new(&attr, 0);
30 if (evsel == NULL) {
31 pr_debug("perf_evsel__new\n");
32 goto out_thread_map_delete;
33 }
34
35 if (perf_evsel__open_per_thread(evsel, threads) < 0) {
36 pr_debug("failed to open counter: %s, "
37 "tweak /proc/sys/kernel/perf_event_paranoid?\n",
38 strerror(errno));
39 goto out_evsel_delete;
40 }
41
42 for (i = 0; i < nr_open_calls; ++i) {
43 fd = open("/etc/passwd", O_RDONLY);
44 close(fd);
45 }
46
47 if (perf_evsel__read_on_cpu(evsel, 0, 0) < 0) {
48 pr_debug("perf_evsel__read_on_cpu\n");
49 goto out_close_fd;
50 }
51
52 if (evsel->counts->cpu[0].val != nr_open_calls) {
53 pr_debug("perf_evsel__read_on_cpu: expected to intercept %d calls, got %" PRIu64 "\n",
54 nr_open_calls, evsel->counts->cpu[0].val);
55 goto out_close_fd;
56 }
57
58 err = 0;
59out_close_fd:
60 perf_evsel__close_fd(evsel, 1, threads->nr);
61out_evsel_delete:
62 perf_evsel__delete(evsel);
63out_thread_map_delete:
64 thread_map__delete(threads);
65 return err;
66}
diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h
index 2223de5ad299..bac133e15bbd 100644
--- a/tools/perf/tests/tests.h
+++ b/tools/perf/tests/tests.h
@@ -1,6 +1,11 @@
1#ifndef TESTS_H 1#ifndef TESTS_H
2#define TESTS_H 2#define TESTS_H
3 3
4/* Tests */
4int test__vmlinux_matches_kallsyms(void); 5int test__vmlinux_matches_kallsyms(void);
6int test__open_syscall_event(void);
7
8/* Util */
9int trace_event__id(const char *evname);
5 10
6#endif /* TESTS_H */ 11#endif /* TESTS_H */
diff --git a/tools/perf/tests/util.c b/tools/perf/tests/util.c
new file mode 100644
index 000000000000..748f2e8f6961
--- /dev/null
+++ b/tools/perf/tests/util.c
@@ -0,0 +1,30 @@
1#include <stdio.h>
2#include <unistd.h>
3#include <stdlib.h>
4#include <sys/types.h>
5#include <sys/stat.h>
6#include <fcntl.h>
7#include "tests.h"
8#include "debugfs.h"
9
10int trace_event__id(const char *evname)
11{
12 char *filename;
13 int err = -1, fd;
14
15 if (asprintf(&filename,
16 "%s/syscalls/%s/id",
17 tracing_events_path, evname) < 0)
18 return -1;
19
20 fd = open(filename, O_RDONLY);
21 if (fd >= 0) {
22 char id[16];
23 if (read(fd, id, sizeof(id)) > 0)
24 err = atoi(id);
25 close(fd);
26 }
27
28 free(filename);
29 return err;
30}
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-08 04:30:19 -0500