Re: [PATCH 0/4] munmap: Flexible mem unmap operation interface forscheduling latency

[Steven Rostedt]

On Tue, 2011-04-26 at 09:25 +0200, Peter Zijlstra wrote:
> On Mon, 2011-04-25 at 16:29 -0400, Steven Rostedt wrote:
> > On Mon, 2011-04-25 at 21:47 +0200, Peter Zijlstra wrote:
> > 
> > > Also, -rt doesn't care since it already has preemptible mmu_gather.
> > 
> > To be fair, he did state:
> > 
> > >     In general, This is not a critical latency-path on preemption mode
> > >     (PREEMPT_VOLUNTARY / PREEMPT_DESKTOP / PREEMPT_RT)
> 
> That doesn't parse for me... what does it say? The only one not listed
> is the non-preempt option, that wouldn't reschedule no matter what
> ZAP_BLOCK_SIZE.

Heh, it didn't parse for me, as I took PREEMPT_DESKTOP and thought it
said PREEMPT_NONE.

Oh well.

-- Steve


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