Re: [PATCH 2/2] rcu: eliminate rcu_data.last_qsctr

[Dipankar Sarma]

On Sun, Nov 28, 2004 at 06:06:55PM +0300, Oleg Nesterov wrote:
> Hello.
> 
> Is the rcu_data.last_qsctr really needed?
> 
> It is used in rcu_check_quiescent_state() exclusively.
> I think we can reset qsctr at the start of the grace period,
> and then just test qsctr against 0.
> 

No race with interrupt for rdp->qsctr, so it looks good.

Thanks
Dipankar
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