* regarding kernel preemption
@ 2007-03-29 16:05 Rick Brown
2007-03-29 16:21 ` Scott Wood
0 siblings, 1 reply; 3+ messages in thread
From: Rick Brown @ 2007-03-29 16:05 UTC (permalink / raw)
To: Linux Kernel; +Cc: kernelnewbies, linux-newbie
Hi list,
I had posted this on kernelnewbies, but did not get much response, and
hence trying here.
When we preempt_enable() / preempt_disable(), is the kernel preemption
enabled or disabled for ALL the processors or just the local
processor?
TIA,
Rick
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: regarding kernel preemption
2007-03-29 16:05 regarding kernel preemption Rick Brown
@ 2007-03-29 16:21 ` Scott Wood
2007-03-29 20:54 ` Rodrigo Rubira Branco
0 siblings, 1 reply; 3+ messages in thread
From: Scott Wood @ 2007-03-29 16:21 UTC (permalink / raw)
To: Rick Brown; +Cc: Linux Kernel, kernelnewbies, linux-newbie
On Thu, Mar 29, 2007 at 09:35:13PM +0530, Rick Brown wrote:
> When we preempt_enable() / preempt_disable(), is the kernel preemption
> enabled or disabled for ALL the processors or just the local
> processor?
Just the local processor.
-Scott
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: regarding kernel preemption
2007-03-29 16:21 ` Scott Wood
@ 2007-03-29 20:54 ` Rodrigo Rubira Branco
0 siblings, 0 replies; 3+ messages in thread
From: Rodrigo Rubira Branco @ 2007-03-29 20:54 UTC (permalink / raw)
To: linux-kernel
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I recommend this link for more info:
http://www.linuxjournal.com/comment/reply/5600
Sent me a mail if you need any other explanation into this.
Cya,
Rodrigo (BSDaemon).
On Thu, 2007-03-29 at 11:21 -0500, Scott Wood wrote:
> On Thu, Mar 29, 2007 at 09:35:13PM +0530, Rick Brown wrote:
> > When we preempt_enable() / preempt_disable(), is the kernel preemption
> > enabled or disabled for ALL the processors or just the local
> > processor?
>
> Just the local processor.
>
> -Scott
> -
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--
Rodrigo Rubira Branco
Software Engineering - Advanced Linux Response Team (ALRT)
IBM Linux Technology Center (IBM/LTC)
rrbranco@br.ibm.com
GPG KeyID: 5E90CA19
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^ permalink raw reply [flat|nested] 3+ messages in thread
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2007-03-29 16:05 regarding kernel preemption Rick Brown
2007-03-29 16:21 ` Scott Wood
2007-03-29 20:54 ` Rodrigo Rubira Branco
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