* How to diasble interrupt of current core in multicore cpu
@ 2014-05-30 8:12 J.Hwan Kim
2014-05-30 8:25 ` Pranay Srivastava
0 siblings, 1 reply; 4+ messages in thread
From: J.Hwan Kim @ 2014-05-30 8:12 UTC (permalink / raw)
To: kernelnewbies
Hi, everyone
How to disable interrupt for current core in multicore CPU?
Thanks in advance
Kim.
^ permalink raw reply [flat|nested] 4+ messages in thread
* How to diasble interrupt of current core in multicore cpu
2014-05-30 8:12 How to diasble interrupt of current core in multicore cpu J.Hwan Kim
@ 2014-05-30 8:25 ` Pranay Srivastava
2014-05-30 8:29 ` enjoy mindful
2014-06-05 19:05 ` Yi Li
0 siblings, 2 replies; 4+ messages in thread
From: Pranay Srivastava @ 2014-05-30 8:25 UTC (permalink / raw)
To: kernelnewbies
are you looking for
local_irq_disable?
On Fri, May 30, 2014 at 1:42 PM, J.Hwan Kim <kernel.frog.007@gmail.com> wrote:
> Hi, everyone
>
> How to disable interrupt for current core in multicore CPU?
>
> Thanks in advance
> Kim.
>
> _______________________________________________
> Kernelnewbies mailing list
> Kernelnewbies at kernelnewbies.org
> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
--
---P.K.S
^ permalink raw reply [flat|nested] 4+ messages in thread* How to diasble interrupt of current core in multicore cpu
2014-05-30 8:25 ` Pranay Srivastava
@ 2014-05-30 8:29 ` enjoy mindful
2014-06-05 19:05 ` Yi Li
1 sibling, 0 replies; 4+ messages in thread
From: enjoy mindful @ 2014-05-30 8:29 UTC (permalink / raw)
To: kernelnewbies
linux-3.12.6/Documentation/IRQ-affinity.txt
On Fri, May 30, 2014 at 4:25 PM, Pranay Srivastava <pranjas@gmail.com> wrote:
> are you looking for
>
> local_irq_disable?
>
> On Fri, May 30, 2014 at 1:42 PM, J.Hwan Kim <kernel.frog.007@gmail.com> wrote:
>> Hi, everyone
>>
>> How to disable interrupt for current core in multicore CPU?
>>
>> Thanks in advance
>> Kim.
>>
>> _______________________________________________
>> Kernelnewbies mailing list
>> Kernelnewbies at kernelnewbies.org
>> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>
>
>
> --
> ---P.K.S
>
> _______________________________________________
> Kernelnewbies mailing list
> Kernelnewbies at kernelnewbies.org
> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
^ permalink raw reply [flat|nested] 4+ messages in thread
* How to diasble interrupt of current core in multicore cpu
2014-05-30 8:25 ` Pranay Srivastava
2014-05-30 8:29 ` enjoy mindful
@ 2014-06-05 19:05 ` Yi Li
1 sibling, 0 replies; 4+ messages in thread
From: Yi Li @ 2014-06-05 19:05 UTC (permalink / raw)
To: kernelnewbies
-----Original Message-----
From: kernelnewbies-bounces@kernelnewbies.org [mailto:kernelnewbies-bounces at kernelnewbies.org] On Behalf Of Pranay Srivastava
Sent: Friday, May 30, 2014 4:26 PM
To: J.Hwan Kim
Cc: kernelnewbies
Subject: Re: How to diasble interrupt of current core in multicore cpu
are you looking for
local_irq_disable?
On Fri, May 30, 2014 at 1:42 PM, J.Hwan Kim <kernel.frog.007@gmail.com> wrote:
> Hi, everyone
>
> How to disable interrupt for current core in multicore CPU?
>
> Thanks in advance
> Kim.
>
local_irq_save/restore would be more suitable. you can use them without considering
is interrupt enabled now. your code may looks like this:
local_irq_save()
/*your code comes here with interrupt disabled*/
local_irq_restore()
in this way, if interrupt is in state A (may be enabled or disabled), before you call local_irq_save(), then after you call local_irq_restore,
the interrupt will still be in state A. harmless to other code.
> _______________________________________________
> Kernelnewbies mailing list
> Kernelnewbies at kernelnewbies.org
> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
--
---P.K.S
_______________________________________________
Kernelnewbies mailing list
Kernelnewbies at kernelnewbies.org
http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
^ permalink raw reply [flat|nested] 4+ messages in thread
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2014-05-30 8:12 How to diasble interrupt of current core in multicore cpu J.Hwan Kim
2014-05-30 8:25 ` Pranay Srivastava
2014-05-30 8:29 ` enjoy mindful
2014-06-05 19:05 ` Yi Li
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