Commit 285caad4 authored by Li Zefan's avatar Li Zefan Committed by Steven Rostedt

tracing/filters: Fix MATCH_FRONT_ONLY filter matching

MATCH_FRONT_ONLY actually is a full matching:

  # ./perf record -R -f -a -e lock:lock_acquire \
	--filter 'name ~rcu_*' sleep 1
  # ./perf trace
  (no output)

We should pass the length of the pattern string to strncmp().
Signed-off-by: default avatarLi Zefan <lizf@cn.fujitsu.com>
LKML-Reference: <4B4E8721.5090301@cn.fujitsu.com>
Acked-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
parent 751e9983
...@@ -261,7 +261,7 @@ static int regex_match_full(char *str, struct regex *r, int len) ...@@ -261,7 +261,7 @@ static int regex_match_full(char *str, struct regex *r, int len)
static int regex_match_front(char *str, struct regex *r, int len) static int regex_match_front(char *str, struct regex *r, int len)
{ {
if (strncmp(str, r->pattern, len) == 0) if (strncmp(str, r->pattern, r->len) == 0)
return 1; return 1;
return 0; return 0;
} }
......
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