[PATCH] tracing: use __this_cpu_read() in trace_buffered_event_enable()

[Xianting Tian]

The code is executed with preemption disabled, so it's
safe to use __this_cpu_read().

Signed-off-by: Xianting Tian <tian.xiant...@h3c.com>
---
 kernel/trace/trace.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index bb6226972..7d0d71ce9 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -2514,7 +2514,7 @@ void trace_buffered_event_enable(void)
 
                preempt_disable();
                if (cpu == smp_processor_id() &&
-                   this_cpu_read(trace_buffered_event) !=
+                   __this_cpu_read(trace_buffered_event) !=
                    per_cpu(trace_buffered_event, cpu))
                        WARN_ON_ONCE(1);
                preempt_enable();
-- 
2.17.1