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tracing: Use __this_cpu_read() in trace_buffered_event_enable()

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

Link: https://lkml.kernel.org/r/20200813112803.12256-1-tian.xianting@h3c.com

Signed-off-by: Xianting Tian <tian.xianting@h3c.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Xianting Tian 2020-08-13 19:28:03 +08:00 committed by Steven Rostedt (VMware)
parent 5c8c206e43
commit b427e765bd
1 changed files with 1 additions and 1 deletions
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2
kernel/trace/trace.c
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@ -2511,7 +2511,7 @@ 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();