How to diasble interrupt of current core in multicore cpu

Hi, everyone

How to disable interrupt for current core in multicore CPU?

Thanks in advance
Kim.

are you looking for

local_irq_disable?

        ---P.K.S

linux-3.12.6/Documentation/IRQ-affinity.txt

-----Original Message-----
From: [email protected] [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?

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.

        ---P.K.S

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