Re: [PATCH v2 -next] rcu: rcu_qs -- Use raise_softirq_irqoff to not save irqs twice

On Thu, Jan 24, 2019 at 09:14:37PM +0300, Cyrill Gorcunov wrote: > The rcu_qs is disabling IRQs by self so no need to do the same in > raise_softirq > but instead we can save some cycles using raise_softirq_irqoff directly. > > CC: Paul E. McKenney > Signed-off-by: Cyrill Gorcunov Good eyes,

[PATCH v2 -next] rcu: rcu_qs -- Use raise_softirq_irqoff to not save irqs twice

The rcu_qs is disabling IRQs by self so no need to do the same in raise_softirq but instead we can save some cycles using raise_softirq_irqoff directly. CC: Paul E. McKenney Signed-off-by: Cyrill Gorcunov --- The prev patch body has been screwed, sorry. kernel/rcu/tiny.c |2 +- 1 file