diff options
| author | Andi Kleen <ak@linux.intel.com> | 2019-02-24 18:37:19 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-02-25 16:58:28 +0300 |
| commit | 94816add0005595ea33fc8456519be582330401e (patch) | |
| tree | 2b6d96ee56bb88f1c4e1044b5ef62a29528d65bb /tools/perf/util/header.c | |
| parent | 4b6ac811bce46c83811b83cdf87b41251596b9fc (diff) | |
| download | linux-94816add0005595ea33fc8456519be582330401e.tar.xz | |
perf tools: Add perf_exe() helper to find perf binary
Also convert one existing user.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/20190224153722.27020-9-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/header.c')
| -rw-r--r-- | tools/perf/util/header.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index a2323d777dae..01b324c275b9 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -527,17 +527,11 @@ static int write_event_desc(struct feat_fd *ff, static int write_cmdline(struct feat_fd *ff, struct perf_evlist *evlist __maybe_unused) { - char buf[MAXPATHLEN]; - u32 n; - int i, ret; + char pbuf[MAXPATHLEN], *buf; + int i, ret, n; /* actual path to perf binary */ - ret = readlink("/proc/self/exe", buf, sizeof(buf) - 1); - if (ret <= 0) - return -1; - - /* readlink() does not add null termination */ - buf[ret] = '\0'; + buf = perf_exe(pbuf, MAXPATHLEN); /* account for binary path */ n = perf_env.nr_cmdline + 1; |