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| author | Adrian Hunter <adrian.hunter@intel.com> | 2022-05-20 16:24:03 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-05-23 16:11:39 +0300 |
| commit | a4455e0053aacf4ae088530dc045d50f4ea471e3 (patch) | |
| tree | bb74137f04223cb3d0165a807cccfa12dec168db | |
| parent | 180b3d06263ce70dd0622681237cf5c0555d9ca0 (diff) | |
| download | linux-a4455e0053aacf4ae088530dc045d50f4ea471e3.tar.xz | |
perf data: Add has_kcore_dir()
Add a helper function has_kcore_dir(), so that perf inject can determine if
it needs to keep the kcore_dir.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20220520132404.25853-5-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/util/data.c | 14 | ||||
| -rw-r--r-- | tools/perf/util/data.h | 1 |
2 files changed, 15 insertions, 0 deletions
diff --git a/tools/perf/util/data.c b/tools/perf/util/data.c index a5ace2bbc28d..caabeac24c69 100644 --- a/tools/perf/util/data.c +++ b/tools/perf/util/data.c @@ -479,6 +479,20 @@ int perf_data__make_kcore_dir(struct perf_data *data, char *buf, size_t buf_sz) return mkdir(buf, S_IRWXU); } +bool has_kcore_dir(const char *path) +{ + char *kcore_dir; + int ret; + + if (asprintf(&kcore_dir, "%s/kcore_dir", path) < 0) + return false; + + ret = access(kcore_dir, F_OK); + + free(kcore_dir); + return !ret; +} + char *perf_data__kallsyms_name(struct perf_data *data) { char *kallsyms_name; diff --git a/tools/perf/util/data.h b/tools/perf/util/data.h index 1402d9657ef2..7de53d6e2d7f 100644 --- a/tools/perf/util/data.h +++ b/tools/perf/util/data.h @@ -99,6 +99,7 @@ void perf_data__close_dir(struct perf_data *data); int perf_data__update_dir(struct perf_data *data); unsigned long perf_data__size(struct perf_data *data); int perf_data__make_kcore_dir(struct perf_data *data, char *buf, size_t buf_sz); +bool has_kcore_dir(const char *path); char *perf_data__kallsyms_name(struct perf_data *data); bool is_perf_data(const char *path); #endif /* __PERF_DATA_H */ |