Messages in this thread | | | Date | Thu, 8 Oct 2009 08:44:56 -0400 | From | Mathieu Desnoyers <> | Subject | Re: [this_cpu_xx V5 19/19] SLUB: Experimental new fastpath w/o interrupt disable |
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* Peter Zijlstra (peterz@infradead.org) wrote: > On Wed, 2009-10-07 at 11:21 -0400, Christoph Lameter wrote: > > On Wed, 7 Oct 2009, Mathieu Desnoyers wrote: > > > > > You are already calling the scheduler when ending the _fast_ path. I > > > don't see the problem with calling it when you end the slow path > > > execution. > > > > Well yes that gives rise to the thought of using > > > > preempt_enable_no_sched() > > NACK, delaying the reschedule is not an option
Even if only done with interrupt off, and check resched is called after each irq enable following this critical section ? I'd like to understand the reason behind your rejection for this specific case.
Thanks,
Mathieu
-- Mathieu Desnoyers OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68
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