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| author | Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2014-06-24 23:50:09 -0400 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2014-07-01 12:45:54 -0400 |
| commit | 099ed151675cd1d2dbeae1dac697975f6a68716d (patch) | |
| tree | 77b8216988011039ce566aea36322fc6a61106e9 /kernel | |
| parent | fb6bab6a5ad46d00b5ffa22268f21df1cd7c59df (diff) | |
| download | linux-stable-099ed151675cd1d2dbeae1dac697975f6a68716d.tar.gz linux-stable-099ed151675cd1d2dbeae1dac697975f6a68716d.tar.bz2 linux-stable-099ed151675cd1d2dbeae1dac697975f6a68716d.zip | |
tracing: Remove ftrace_stop/start() from reading the trace file
Disabling reading and writing to the trace file should not be able to
disable all function tracing callbacks. There's other users today
(like kprobes and perf). Reading a trace file should not stop those
from happening.
Cc: stable@vger.kernel.org # 3.0+
Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/trace/trace.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 384ede311717..f243444a3772 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -1396,7 +1396,6 @@ void tracing_start(void) arch_spin_unlock(&global_trace.max_lock); - ftrace_start(); out: raw_spin_unlock_irqrestore(&global_trace.start_lock, flags); } @@ -1443,7 +1442,6 @@ void tracing_stop(void) struct ring_buffer *buffer; unsigned long flags; - ftrace_stop(); raw_spin_lock_irqsave(&global_trace.start_lock, flags); if (global_trace.stop_count++) goto out; |