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authorSteven Rostedt <srostedt@redhat.com>2009-08-05 12:02:48 -0400
committerSteven Rostedt <rostedt@goodmis.org>2009-08-05 20:19:59 -0400
commit0f2541d299d233eddddee4345795e0c46264fd56 (patch)
tree19a1628703792d1e0ae8abe18c240d60a6e1705d
parente16852cfc5580b88cb327413ab8c89375f380592 (diff)
downloadblackbird-op-linux-0f2541d299d233eddddee4345795e0c46264fd56.tar.gz
blackbird-op-linux-0f2541d299d233eddddee4345795e0c46264fd56.zip
ring-buffer: fix check of try_to_discard result
The function ring_buffer_discard_commit inversed the code path of the result of try_to_discard. It should skip incrementing the entry counter if try_to_discard succeeded. But instead, it increments the entry conder if it succeeded to discard, and does not increment it if it fails. The result of this bug is that filtering will make the stat counters incorrect. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
-rw-r--r--kernel/trace/ring_buffer.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index bf27bb7a63e2..2fd1752f0c85 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -1785,7 +1785,7 @@ void ring_buffer_discard_commit(struct ring_buffer *buffer,
*/
RB_WARN_ON(buffer, !local_read(&cpu_buffer->committing));
- if (!rb_try_to_discard(cpu_buffer, event))
+ if (rb_try_to_discard(cpu_buffer, event))
goto out;
/*
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