Re: [patch V5 04/26] signal: Allow POSIX timer signals to be dropped

[Frederic Weisbecker]

Le Tue, Oct 01, 2024 at 10:42:04AM +0200, Thomas Gleixner a écrit :
> From: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> 
> In case that a timer was reprogrammed or deleted an already pending signal
> is obsolete. Right now such signals are kept around and eventually
> delivered. While POSIX is blury about this:
> 
>  - "The effect of disarming or resetting a timer with pending expiration
>     notifications is unspecified."
> 
>  - "The disposition of pending signals for the deleted timer is
>     unspecified."
> 
> it is reasonable in both cases to expect that pending signals are discarded
> as they have no meaning anymore.
> 
> Prepare the signal code to allow dropping posix timer signals.
> 
> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> Acked-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>

Reviewed-by: Frederic Weisbecker <frederic@xxxxxxxxxx>