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Subject[PATCH] tracing: use __this_cpu_read() in trace_buffered_event_enable()
Date
The code is executed with preemption disabled, so it's
safe to use __this_cpu_read().

Signed-off-by: Xianting Tian <tian.xianting@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
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