Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit f11cfc6f authored by Pekka Enberg's avatar Pekka Enberg Committed by Arnaldo Carvalho de Melo
Browse files

perf list: Show error if tracepoints not available 



Tracepoints are not visible in "perf list" on Fedora 19 because regular
users have no permission to /sys/kernel/debug by default. Show an error
message so that the user knows about it instead of assuming that
tracepoints are not supported on the system.

Signed-off-by: default avatarPekka Enberg <penberg@kernel.org>
Acked-by: default avatarIngo Molnar <mingo@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>
Link: http://lkml.kernel.org/r/1381867647-8594-1-git-send-email-penberg@kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 243be3dd

tools/perf/util/parse-events.c

+3 −1
Original line number Diff line number Diff line
@@ -998,8 +998,10 @@ void print_tracepoint_events(const char *subsys_glob, const char *event_glob, 
	char evt_path[MAXPATHLEN];

	char dir_path[MAXPATHLEN];



	if (debugfs_valid_mountpoint(tracing_events_path))

	if (debugfs_valid_mountpoint(tracing_events_path)) {

		printf("  [ Tracepoints not available: %s ]\n", strerror(errno));

		return;

	}



	sys_dir = opendir(tracing_events_path);

	if (!sys_dir)