rcu: Remove lockdep annotations from RCU's _notrace() API members
The lockdep annotations rcu_read_acquire() and rcu_read_release() might lead to infinite looping if called from lockdep. So this patch removes them. Formal repost of http://lkml.org/lkml/2009/8/25/309 on the strength of Lai Jiangshan's review. Suggested-by: Lai Jiangshan <laijs@cn.fujitsu.com> Suggested-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Reviewed-by: Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: dipankar@in.ibm.com Cc: akpm@linux-foundation.org Cc: josht@linux.vnet.ibm.com Cc: dvhltc@us.ibm.com Cc: niv@us.ibm.com Cc: peterz@infradead.org Cc: rostedt@goodmis.org LKML-Reference: <20090826015337.GA18904@linux.vnet.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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@ -195,7 +195,6 @@ static inline notrace void rcu_read_lock_sched_notrace(void)
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{
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preempt_disable_notrace();
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__acquire(RCU_SCHED);
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rcu_read_acquire();
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}
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/*
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@ -211,7 +210,6 @@ static inline void rcu_read_unlock_sched(void)
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}
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static inline notrace void rcu_read_unlock_sched_notrace(void)
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{
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rcu_read_release();
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__release(RCU_SCHED);
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preempt_enable_notrace();
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}
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