Commit 099ed151 authored by Steven Rostedt (Red Hat)'s avatar Steven Rostedt (Red Hat) Committed by Steven Rostedt

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: # 3.0+
Reviewed-by: default avatarMasami Hiramatsu <>
Signed-off-by: default avatarSteven Rostedt <>
parent fb6bab6a
......@@ -1396,7 +1396,6 @@ void tracing_start(void)
raw_spin_unlock_irqrestore(&global_trace.start_lock, flags);
......@@ -1443,7 +1442,6 @@ void tracing_stop(void)
struct ring_buffer *buffer;
unsigned long flags;
raw_spin_lock_irqsave(&global_trace.start_lock, flags);
if (global_trace.stop_count++)
goto out;
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