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@ 2008-02-03 11:13 am kara
  2008-02-03 18:23 ` Benny Halevy
  0 siblings, 1 reply; 2+ messages in thread
From: am kara @ 2008-02-03 11:13 UTC (permalink / raw)
  To: linux-kernel

hello,

If kernel does kmap_atomic(temporary kernel mapping)
on behalf of a process by a cpu, does the process will
continue to run and no other process can be scheduled
to switch it off?(till kunmap_atomic is done)

 


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^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: 
  2008-02-03 11:13 am kara
@ 2008-02-03 18:23 ` Benny Halevy
  0 siblings, 0 replies; 2+ messages in thread
From: Benny Halevy @ 2008-02-03 18:23 UTC (permalink / raw)
  To: am kara; +Cc: linux-kernel

am kara wrote:
> hello,
> 
> If kernel does kmap_atomic(temporary kernel mapping)
> on behalf of a process by a cpu, does the process will
> continue to run and no other process can be scheduled
> to switch it off?(till kunmap_atomic is done)

Effectively, kmap_atomic implementations call pagefault_disable
and that in turn is equivalent to preempt_disable()
so the answer to your question seems to be "yes".

Benny


^ permalink raw reply	[flat|nested] 2+ messages in thread

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