4 #include <util/evlist.h>
5 #include <linux/filter.h>
8 #include "probe-file.h"
11 /* To test SDT event, we need libelf support to scan elf binary */
12 #if defined(HAVE_SDT_EVENT) && defined(HAVE_LIBELF_SUPPORT)
16 static int target_function(void)
18 DTRACE_PROBE(perf, test_target);
22 /* Copied from builtin-buildid-cache.c */
23 static int build_id_cache__add_file(const char *filename)
25 char sbuild_id[SBUILD_ID_SIZE];
26 u8 build_id[BUILD_ID_SIZE];
29 err = filename__read_build_id(filename, &build_id, sizeof(build_id));
31 pr_debug("Failed to read build id of %s\n", filename);
35 build_id__sprintf(build_id, sizeof(build_id), sbuild_id);
36 err = build_id_cache__add_s(sbuild_id, filename, false, false);
38 pr_debug("Failed to add build id cache of %s\n", filename);
42 static char *get_self_path(void)
44 char *buf = calloc(PATH_MAX, sizeof(char));
46 if (buf && readlink("/proc/self/exe", buf, PATH_MAX) < 0) {
47 pr_debug("Failed to get correct path of perf\n");
54 static int search_cached_probe(const char *target,
55 const char *group, const char *event)
57 struct probe_cache *cache = probe_cache__new(target);
61 pr_debug("Failed to open probe cache of %s\n", target);
65 if (!probe_cache__find_by_name(cache, group, event)) {
66 pr_debug("Failed to find %s:%s in the cache\n", group, event);
69 probe_cache__delete(cache);
74 int test__sdt_event(int subtests __maybe_unused)
77 char __tempdir[] = "./test-buildid-XXXXXX";
78 char *tempdir = NULL, *myself = get_self_path();
80 if (myself == NULL || mkdtemp(__tempdir) == NULL) {
81 pr_debug("Failed to make a tempdir for build-id cache\n");
84 /* Note that buildid_dir must be an absolute path */
85 tempdir = realpath(__tempdir, NULL);
87 /* At first, scan itself */
88 set_buildid_dir(tempdir);
89 if (build_id_cache__add_file(myself) < 0)
92 /* Open a cache and make sure the SDT is stored */
93 if (search_cached_probe(myself, "sdt_perf", "test_target") < 0)
96 /* TBD: probing on the SDT event and collect logs */
98 /* Call the target and get an event */
99 ret = target_function();
102 /* Cleanup temporary buildid dir */
110 int test__sdt_event(int subtests __maybe_unused)
112 pr_debug("Skip SDT event test because SDT support is not compiled\n");