Re: [patch v6 16/20] signal: Handle ignored signals in do_sigaction(action != SIG_IGN)

[Frederic Weisbecker]

Le Thu, Oct 31, 2024 at 04:46:42PM +0100, Thomas Gleixner a écrit :
> From: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> 
> When a real handler (including SIG_DFL) is installed for a signal, which
> had previously SIG_IGN set, then the list of ignored posix timers has to be
> checked for timers which are affected by this change.
> 
> Add a list walk function which checks for the matching signal number and if
> found requeues the timers signal, so the timer is rearmed on signal
> delivery.
> 
> Rearming the timer right away is not possible because that requires to drop
> sighand lock.
> 
> No functional change as the counter part which queues the timers on the
> ignored list is still missing.
> 
> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> Acked-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>

Reviewed-by: Frederic Weisbecker <frederic@xxxxxxxxxx>