-----Original Message----- From: kernelnewbies-bounces@kernelnewbies.org [mailto:kernelnewbies-bounces@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.

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