diff options
| author |   Jiri Olsa <jolsa@kernel.org> | 2020-11-26 18:00:21 +0100 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2020-11-27 08:37:15 -0300 |
| commit | 058f15113042bc2fa03b0b134bfc7fb8cd156878 (patch) | |
| tree | 2cfb9ae3c853b081182bb297e70db422d84aaae2 /tools/perf/util | |
| parent | perf symbols: Try to load vmlinux from buildid database (diff) | |
| download | linux-dev-058f15113042bc2fa03b0b134bfc7fb8cd156878.tar.xz linux-dev-058f15113042bc2fa03b0b134bfc7fb8cd156878.zip | |
perf data: Add is_perf_data function
Adding is_perf_data function that returns true if the given path is perf
data file. It will be used in following patches.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20201126170026.2619053-21-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util')
| -rw-r--r-- | tools/perf/util/data.c | 19 | ||||
| -rw-r--r-- | tools/perf/util/data.h | 1 |
2 files changed, 20 insertions, 0 deletions
diff --git a/tools/perf/util/data.c b/tools/perf/util/data.c index 05bbcb663c41..f29af4fc3d09 100644 --- a/tools/perf/util/data.c +++ b/tools/perf/util/data.c @@ -492,3 +492,22 @@ char *perf_data__kallsyms_name(struct perf_data *data) return kallsyms_name; } + +bool is_perf_data(const char *path) +{ + bool ret = false; + FILE *file; + u64 magic; + + file = fopen(path, "r"); + if (!file) + return false; + + if (fread(&magic, 1, 8, file) < 8) + goto out; + + ret = is_perf_magic(magic); +out: + fclose(file); + return ret; +} diff --git a/tools/perf/util/data.h b/tools/perf/util/data.h index c563fcbb0288..62a3e66fbee8 100644 --- a/tools/perf/util/data.h +++ b/tools/perf/util/data.h @@ -98,4 +98,5 @@ 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); char *perf_data__kallsyms_name(struct perf_data *data); +bool is_perf_data(const char *path); #endif /* __PERF_DATA_H */ |