Messages in this thread Patch in this message | | | From | Xianting Tian <> | Subject | [PATCH] tracing: use __this_cpu_read() in trace_buffered_event_enable() | Date | Thu, 13 Aug 2020 19:28:03 +0800 |
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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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