Re: [PATCH] rcu: don't call rcu_preempt_note_context_switch() in rcu_check_callbacks()

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From: Lai Jiangshan

Subject: Re: [PATCH] rcu: don't call rcu_preempt_note_context_switch() in rcu_check_callbacks()

Date: Thursday, April 1, 2010 - 12:24 am

Paul E. McKenney wrote:
quoted text> Possibly by moving the clearing of RCU_READ_UNLOCK_NEED_QS to
> rcu_preempt_check_callbacks() 

current rcu_preempt_check_callbacks() already has code to
clear RCU_READ_UNLOCK_NEED_QS.

quoted text> -- or to rcu_preempt_qs().  The latter is in
> some sense cleaner, but higher overhead and probably unnecessary.  Hmmm...
> Alternatively, require that all callers to rcu_preempt_qs() disable
> irqs.  This affects only one callsite, which has a local_irq_disable()
> immediately following anyway.  ;-)
> 
> 							Thanx, Paul

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Messages in current thread:

[PATCH] rcu: don't call rcu_preempt_note_context_switch() ..., Lai Jiangshan, (Sun Mar 28, 7:47 pm)

Re: [PATCH] rcu: don't call rcu_preempt_note_context_switc ..., Paul E. McKenney, (Sun Mar 28, 9:42 pm)

Re: [PATCH] rcu: don't call rcu_preempt_note_context_switc ..., Lai Jiangshan, (Tue Mar 30, 2:43 am)

Re: [PATCH] rcu: don't call rcu_preempt_note_context_switc ..., Paul E. McKenney, (Tue Mar 30, 9:03 am)

Re: [PATCH] rcu: don't call rcu_preempt_note_context_switc ..., Paul E. McKenney, (Wed Mar 31, 8:36 am)

Re: [PATCH] rcu: don't call rcu_preempt_note_context_switc ..., Lai Jiangshan, (Wed Mar 31, 5:56 pm)

Re: [PATCH] rcu: don't call rcu_preempt_note_context_switc ..., Paul E. McKenney, (Wed Mar 31, 6:17 pm)

Re: [PATCH] rcu: don't call rcu_preempt_note_context_switc ..., Lai Jiangshan, (Thu Apr 1, 12:24 am)

Re: [PATCH] rcu: don't call rcu_preempt_note_context_switc ..., Paul E. McKenney, (Thu Apr 1, 5:53 pm)

Re: [PATCH] rcu: don't call rcu_preempt_note_context_switc ..., Lai Jiangshan, (Fri Apr 2, 5:27 am)

Re: [PATCH] rcu: don't call rcu_preempt_note_context_switc ..., Paul E. McKenney, (Fri Apr 2, 8:25 am)


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