From 06e799764eb7c2e4640888d438c3524d756613e1 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Tue, 25 Aug 2009 18:53:37 -0700 Subject: [PATCH] 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 Suggested-by: Mathieu Desnoyers Reviewed-by: Lai Jiangshan Signed-off-by: Paul E. McKenney 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 --- include/linux/rcupdate.h | 2 -- 1 file changed, 2 deletions(-) diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index 8b4422c558da..95e0615f4d75 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -195,7 +195,6 @@ static inline notrace void rcu_read_lock_sched_notrace(void) { preempt_disable_notrace(); __acquire(RCU_SCHED); - rcu_read_acquire(); } /* @@ -211,7 +210,6 @@ static inline void rcu_read_unlock_sched(void) } static inline notrace void rcu_read_unlock_sched_notrace(void) { - rcu_read_release(); __release(RCU_SCHED); preempt_enable_notrace(); } -- 2.39.5