Thread (4 messages) 4 messages, 3 authors, 2020-03-24

Re: [PATCH] kthread: Mark timer used by delayed kthread works as IRQ safe

From: Tejun Heo <tj@kernel.org>
Date: 2020-02-19 15:22:52
Also in: linux-rt-users, lkml, netdev

On Mon, Feb 17, 2020 at 01:07:09PM +0100, Petr Mladek wrote:
The timer used by delayed kthread works are IRQ safe because the used
kthread_delayed_work_timer_fn() is IRQ safe.

It is properly marked when initialized by KTHREAD_DELAYED_WORK_INIT().
But TIMER_IRQSAFE flag is missing when initialized by
kthread_init_delayed_work().

The missing flag might trigger invalid warning from del_timer_sync()
when kthread_mod_delayed_work() is called with interrupts disabled.

Reported-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Tested-by: Grygorii Strashko <grygorii.strashko@ti.com>
Acked-by: Tejun Heo <tj@kernel.org>

Thanks.

-- 
tejun

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