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tracing: Remove ftrace_stop/start() from reading the trace file

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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: [email protected] # 3.0+
Reviewed-by: Masami Hiramatsu <[email protected]>
Signed-off-by: Steven Rostedt <[email protected]>
This commit is contained in:
Steven Rostedt (Red Hat) authored and Steven Rostedt committed 2014-07-01 12:45:54 -04:00
1 parent fb6bab6a5a
commit 099ed15167
1 file changed
-2
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kernel/trace/trace.c
-2
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@@ -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;