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| author | Ingo Molnar <mingo@elte.hu> | 2009-03-18 19:54:04 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-03-18 19:55:00 +0100 |
| commit | ec625cb29e66824f7ce41082617aeb93fa4e42e2 (patch) | |
| tree | 79bf2052899f9f5125b4054103b542a42b9e49bd /kernel/tracepoint.c | |
| parent | 09933a108e6730a464a1ab676c9decc11aee0edc (diff) | |
| download | lwn-ec625cb29e66824f7ce41082617aeb93fa4e42e2.tar.gz lwn-ec625cb29e66824f7ce41082617aeb93fa4e42e2.zip | |
tracepoints: dont update zero-sized tracepoint sections
Zero-sized tracepoint sections can occur if tracing is enabled but
no tracepoint is defined. Do not emit a warning in that case.
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
LKML-Reference: <1237394936.3132.1.camel@localhost.localdomain>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/tracepoint.c')
| -rw-r--r-- | kernel/tracepoint.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/kernel/tracepoint.c b/kernel/tracepoint.c index adf28734fe2d..1ef5d3a601c7 100644 --- a/kernel/tracepoint.c +++ b/kernel/tracepoint.c @@ -278,10 +278,8 @@ tracepoint_update_probe_range(struct tracepoint *begin, struct tracepoint *end) struct tracepoint *iter; struct tracepoint_entry *mark_entry; - if (!begin) { - WARN_ON_ONCE(1); + if (!begin) return; - } mutex_lock(&tracepoints_mutex); for (iter = begin; iter < end; iter++) { |