diff options
| author | Steven Rostedt <rostedt@goodmis.org> | 2008-05-12 21:20:58 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2008-05-23 21:46:53 +0200 |
| commit | b5685aede3b7b65e72ddc73b951aa1f70798a614 (patch) | |
| tree | 12d198a161c360ed900db504067a46c4662eb21a | |
| parent | 8487c23765b6e0444ec6b5f1530766d63fe68e35 (diff) | |
ftrace: restore iterator trace in pipe read
The trace iterator is reset in the read. We still need to restore the tracer
that the trace_pipe was opened with.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | kernel/trace/trace.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index fd4ecc29200..d141fc98f3a 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -2202,6 +2202,8 @@ tracing_read_pipe(struct file *filp, char __user *ubuf, { struct trace_iterator *iter = filp->private_data; struct trace_array_cpu *data; + struct trace_array *tr = iter->tr; + struct tracer *tracer = iter->trace; static cpumask_t mask; static int start; unsigned long flags; @@ -2274,7 +2276,8 @@ tracing_read_pipe(struct file *filp, char __user *ubuf, cnt = PAGE_SIZE - 1; memset(iter, 0, sizeof(*iter)); - iter->tr = &global_trace; + iter->tr = tr; + iter->trace = tracer; iter->pos = -1; /* |