ftrace: prevent recursion
Impact: prevent unnecessary stack recursion if the resched flag was set before we entered, then don't reschedule. Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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@ -1215,7 +1215,7 @@ ring_buffer_lock_reserve(struct ring_buffer *buffer,
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out:
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out:
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if (resched)
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if (resched)
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preempt_enable_notrace();
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preempt_enable_no_resched_notrace();
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else
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else
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preempt_enable_notrace();
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preempt_enable_notrace();
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return NULL;
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return NULL;
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