Re: [PATCH] timer: add_timer_on() should perform proper migration

From: Tejun Heo
Date: Wed Nov 04 2015 - 14:43:53 EST

Hello, Thomas.

On Wed, Nov 04, 2015 at 08:35:00PM +0100, Thomas Gleixner wrote:
> nice detective work. This has been there forever. I really wonder why
> nobody ever triggered this before.

I guess there weren't enough concurrent del/add_timer_on() combos.
Workqueue recently switched to always use add_timer_on() from its
timer function making that a lot more frequent for heavy
mod_delayed_work_on() users and that's when it started surfacing.


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