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Message-Id: <03418373fd1e80030e7394b8e3e081c5de28a710.1549309756.git.tom.zanussi@linux.intel.com>
Date: Mon, 4 Feb 2019 15:07:23 -0600
From: Tom Zanussi <zanussi@...nel.org>
To: rostedt@...dmis.org
Cc: linux-kernel@...r.kernel.org, linux-rt-users@...r.kernel.org,
Tom Zanussi <tom.zanussi@...ux.intel.com>,
Joe Perches <joe@...ches.com>
Subject: [PATCH 1/2] tracing: Use str_has_prefix() in synth_event_create()
From: Tom Zanussi <tom.zanussi@...ux.intel.com>
Since we now have a str_has_prefix() that returns the length, we can
use that instead of explicitly calculating it.
Signed-off-by: Tom Zanussi <tom.zanussi@...ux.intel.com>
Cc: Joe Perches <joe@...ches.com>
---
kernel/trace/trace_events_hist.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index 449d90cfa151..c4a667503bf0 100644
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -1200,8 +1200,8 @@ static int synth_event_create(int argc, const char **argv)
/* This interface accepts group name prefix */
if (strchr(name, '/')) {
- len = sizeof(SYNTH_SYSTEM "/") - 1;
- if (strncmp(name, SYNTH_SYSTEM "/", len))
+ len = str_has_prefix(name, SYNTH_SYSTEM "/");
+ if (len == 0)
return -EINVAL;
name += len;
}
--
2.14.1
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