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authorIngo Molnar <mingo@elte.hu>2009-03-18 19:54:04 +0100
committerIngo Molnar <mingo@elte.hu>2009-03-18 19:55:00 +0100
commitec625cb29e66824f7ce41082617aeb93fa4e42e2 (patch)
tree79bf2052899f9f5125b4054103b542a42b9e49bd /kernel/tracepoint.c
parent09933a108e6730a464a1ab676c9decc11aee0edc (diff)
downloadvexpress-lsk-ec625cb29e66824f7ce41082617aeb93fa4e42e2.tar.gz
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.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/kernel/tracepoint.c b/kernel/tracepoint.c
index adf28734fe2..1ef5d3a601c 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++) {