diff options
| author | Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2015-02-02 19:35:07 (GMT) |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-02-11 15:37:08 (GMT) |
| commit | 23773ca18b399051eb94f98b689cf7a9173c795b (patch) | |
| tree | 17629936892375049fd68b096389e8c24bc07a4a /tools/perf/tests/open-syscall-all-cpus.c | |
| parent | dd6dda27a8be563eaebb3f38b1d1d50920bb7991 (diff) | |
| download | linux-23773ca18b399051eb94f98b689cf7a9173c795b.tar.xz | |
perf tools: Make perf aware of tracefs
As tracefs may be mounted instead of debugfs to get to the event
directories, have perf know about tracefs, and use that file system over
debugfs if it is present.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/20150202193553.340946602@goodmis.org
[ Fixed up error messages about tracefs pointed out by Namhyung ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/tests/open-syscall-all-cpus.c')
| -rw-r--r-- | tools/perf/tests/open-syscall-all-cpus.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/tools/perf/tests/open-syscall-all-cpus.c b/tools/perf/tests/open-syscall-all-cpus.c index 8fa82d1..3ec885c 100644 --- a/tools/perf/tests/open-syscall-all-cpus.c +++ b/tools/perf/tests/open-syscall-all-cpus.c @@ -29,7 +29,12 @@ int test__open_syscall_event_on_all_cpus(void) evsel = perf_evsel__newtp("syscalls", "sys_enter_open"); if (evsel == NULL) { - pr_debug("is debugfs mounted on /sys/kernel/debug?\n"); + if (tracefs_configured()) + pr_debug("is tracefs mounted on /sys/kernel/tracing?\n"); + else if (debugfs_configured()) + pr_debug("is debugfs mounted on /sys/kernel/debug?\n"); + else + pr_debug("Neither tracefs or debugfs is enabled in this kernel\n"); goto out_thread_map_delete; } |