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Merge branch 'tip/perf/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace into perf/urgent 

Pull ftrace ring-buffer resizing fix from Steve Rostedt.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2012-10-21 19:53:34 +02:00
parent f38787f4f9 8e49f418c9
commit ef8ff74ed8
1 changed files with 4 additions and 0 deletions
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4
kernel/trace/ring_buffer.c
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@ -1567,6 +1567,10 @@ int ring_buffer_resize(struct ring_buffer *buffer, unsigned long size,
put_online_cpus(); put_online_cpus();
} else { } else {
/* Make sure this CPU has been intitialized */
if (!cpumask_test_cpu(cpu_id, buffer->cpumask))
goto out;
cpu_buffer = buffer->buffers[cpu_id]; cpu_buffer = buffer->buffers[cpu_id];
if (nr_pages == cpu_buffer->nr_pages) if (nr_pages == cpu_buffer->nr_pages)