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| author | Ammar Faizi <ammarfaizi2@gnuweeb.org> | 2022-04-17 20:56:30 +0200 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2022-04-26 23:58:52 +0200 |
| commit | 69686fcbdcc0b6fed3b8d0907e641f282df2f827 (patch) | |
| tree | 970068a1d785db46a00092af0da75886af09c0ae | |
| parent | tracing: Return -EINVAL if WARN_ON(!glob) triggered in event_hist_trigger_par... (diff) | |
| download | linux-69686fcbdcc0b6fed3b8d0907e641f282df2f827.tar.xz linux-69686fcbdcc0b6fed3b8d0907e641f282df2f827.zip | |
tracing: Change `if (strlen(glob))` to `if (glob[0])`
No need to traverse to the end of string. If the first byte is not a NUL
char, it's guaranteed `if (strlen(glob))` is true.
Link: https://lkml.kernel.org/r/20220417185630.199062-3-ammarfaizi2@gnuweeb.org
Cc: Ingo Molnar <mingo@redhat.com>
Cc: GNU/Weeb Mailing List <gwml@vger.gnuweeb.org>
Signed-off-by: Ammar Faizi <ammarfaizi2@gnuweeb.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
| -rw-r--r-- | kernel/trace/trace_events_hist.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c index 80c25be23c45..fe10179893c1 100644 --- a/kernel/trace/trace_events_hist.c +++ b/kernel/trace/trace_events_hist.c @@ -6217,7 +6217,7 @@ static int event_hist_trigger_parse(struct event_command *cmd_ops, if (WARN_ON(!glob)) return -EINVAL; - if (strlen(glob)) { + if (glob[0]) { hist_err_clear(); last_cmd_set(file, param_and_filter); } |