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| author | Steven Rostedt | 2009-01-21 21:24:56 +0100 |
|---|---|---|
| committer | Ingo Molnar | 2009-01-22 10:27:16 +0100 |
| commit | 97b17efe4537e11bf6669106cfe4ee2c5331b267 (patch) | |
| tree | 46310b25ea38628fc631d4c4c248ebe66426036f /kernel/trace/trace.c | |
| parent | trace: do not disable wake up tracer on output of trace (diff) | |
| download | kernel-qcow2-linux-97b17efe4537e11bf6669106cfe4ee2c5331b267.tar.gz kernel-qcow2-linux-97b17efe4537e11bf6669106cfe4ee2c5331b267.tar.xz kernel-qcow2-linux-97b17efe4537e11bf6669106cfe4ee2c5331b267.zip | |
ring-buffer: do not swap if recording is disabled
If the ring buffer recording has been disabled. Do not let
swapping of ring buffers occur. Simply return -EAGAIN.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/trace/trace.c')
| -rw-r--r-- | kernel/trace/trace.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 220c264e3111..757ae6f7e648 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -415,7 +415,7 @@ update_max_tr_single(struct trace_array *tr, struct task_struct *tsk, int cpu) ftrace_enable_cpu(); - WARN_ON_ONCE(ret); + WARN_ON_ONCE(ret && ret != -EAGAIN); __update_max_tr(tr, tsk, cpu); __raw_spin_unlock(&ftrace_max_lock); |