Re: In SMP system, is there any api to disable IRQ for all CPUs?

On 10/01/2015 11:49 AM, loody wrote:

hi all: is there any kernel API can let IRQ disable for all CPU in SMP system for a while? I just need it for a experiment on my module.

such as: xxxx --> disable SMP all cpu IRQ OOO ---> no interrupt happen OOO ---> no interrupt happen zzzz ---> enable SMP all cou IRQ

Look at the code in kernel/stop_machine.c -- All rights reversed.