RE: Interesting csd deadlock on ARC
From: Noam Camus
Date: Tue Feb 23 2016 - 07:32:40 EST
>From: Peter Zijlstra [mailto:peterz@xxxxxxxxxxxxx]
>Sent: Tuesday, February 23, 2016 12:40 PM
>The only requirement for irq_work is that it runs after the NMI completes and runs from regular IRQ context. >There are no strict interrupt priority requirements, only that it happens.
We here already use self IPI and irq_work on ARC (with no NMI concerns).
Please see patch at:
https://github.com/EZchip/linux/commit/e42556738e610295f917c79dae166373cd11de88
Noam