In SMP system, is there any api to disable IRQ for all CPUs?
From: riel@surriel.com (Rik van Riel)
Date: 2015-10-02 02:01:24
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.