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authorLinus Torvalds <torvalds@linux-foundation.org>2018-10-30 09:47:28 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-10-30 09:47:28 -0700
commitf4267b3604a84ff72c013a0e3e467289908603a6 (patch)
treee4d19ae71a3bbaa62dbab2c997b0465f8a2c3303
parent5b4c0d87de2d4932354ebcf118677c94533f9a01 (diff)
parent0d0352d8b3d6d7ca9a710b40e194cbbaeb841c88 (diff)
downloadlinux-f4267b3604a84ff72c013a0e3e467289908603a6.tar.bz2
Merge tag 'trace-v4.19-rc8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt: "Masami had a couple more fixes to the synthetic events. One was a proper error return value, and the other is for the self tests" * tag 'trace-v4.19-rc8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: selftests/ftrace: Fix synthetic event test to delete event correctly tracing: Return -ENOENT if there is no target synthetic event
-rw-r--r--kernel/trace/trace_events_hist.c4
-rw-r--r--tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-createremove.tc12
2 files changed, 9 insertions, 7 deletions
diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index d239004aaf29..eb908ef2ecec 100644
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -1063,8 +1063,10 @@ static int create_synth_event(int argc, char **argv)
event = NULL;
ret = -EEXIST;
goto out;
- } else if (delete_event)
+ } else if (delete_event) {
+ ret = -ENOENT;
goto out;
+ }
if (argc < 2) {
ret = -EINVAL;
diff --git a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-createremove.tc b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-createremove.tc
index 8d647fb572dd..41128219231a 100644
--- a/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-createremove.tc
+++ b/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-createremove.tc
@@ -25,18 +25,18 @@ fi
reset_trigger
-echo "Test create synthetic event with an error"
-echo 'wakeup_latency u64 lat pid_t pid char' > synthetic_events > /dev/null
+echo "Test remove synthetic event"
+echo '!wakeup_latency u64 lat pid_t pid char comm[16]' >> synthetic_events
if [ -d events/synthetic/wakeup_latency ]; then
- fail "Created wakeup_latency synthetic event with an invalid format"
+ fail "Failed to delete wakeup_latency synthetic event"
fi
reset_trigger
-echo "Test remove synthetic event"
-echo '!wakeup_latency u64 lat pid_t pid char comm[16]' > synthetic_events
+echo "Test create synthetic event with an error"
+echo 'wakeup_latency u64 lat pid_t pid char' > synthetic_events > /dev/null
if [ -d events/synthetic/wakeup_latency ]; then
- fail "Failed to delete wakeup_latency synthetic event"
+ fail "Created wakeup_latency synthetic event with an invalid format"
fi
exit 0