From ec625cb29e66824f7ce41082617aeb93fa4e42e2 Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Wed, 18 Mar 2009 19:54:04 +0100
Subject: [PATCH] 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>
---
kernel/tracepoint.c | 4 +---
1 file changed, 1 insertion(+), 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++) {
--
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