From: Frederic Weisbecker <frederic@kernel.org>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: LKML <linux-kernel@vger.kernel.org>,
Anna-Maria Behnsen <anna-maria@linutronix.de>,
John Stultz <jstultz@google.com>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@kernel.org>, Stephen Boyd <sboyd@kernel.org>,
Eric Biederman <ebiederm@xmission.com>,
Oleg Nesterov <oleg@redhat.com>
Subject: Re: [patch v6 16/20] signal: Handle ignored signals in do_sigaction(action != SIG_IGN)
Date: Fri, 1 Nov 2024 15:04:30 +0100 [thread overview]
Message-ID: <ZyTf7lNNYt8Wjbfq@localhost.localdomain> (raw)
In-Reply-To: <20241031154425.561437034@linutronix.de>
Le Thu, Oct 31, 2024 at 04:46:42PM +0100, Thomas Gleixner a écrit :
> From: Thomas Gleixner <tglx@linutronix.de>
>
> 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@linutronix.de>
> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
next prev parent reply other threads:[~2024-11-01 14:04 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-31 15:46 [patch v6 00/20] posix-timers: Cure the SIG_IGN mess Thomas Gleixner
2024-10-31 15:46 ` [patch v6 01/20] posix-timers: Make signal delivery consistent Thomas Gleixner
2024-11-01 12:26 ` Frederic Weisbecker
2024-10-31 15:46 ` [patch v6 02/20] posix-timers: Make signal overrun accounting sensible Thomas Gleixner
2024-11-01 12:51 ` Frederic Weisbecker
2024-11-01 20:36 ` Thomas Gleixner
2024-11-02 19:41 ` Thomas Gleixner
2024-11-02 22:57 ` Frederic Weisbecker
2024-10-31 15:46 ` [patch v6 03/20] posix-cpu-timers: Cleanup the firing logic Thomas Gleixner
2024-11-01 13:14 ` Frederic Weisbecker
2024-10-31 15:46 ` [patch v6 04/20] posix-cpu-timers: Use dedicated flag for CPU timer nanosleep Thomas Gleixner
2024-10-31 15:46 ` [patch v6 05/20] posix-timers: Add a refcount to struct k_itimer Thomas Gleixner
2024-10-31 15:46 ` [patch v6 06/20] signal: Split up __sigqueue_alloc() Thomas Gleixner
2024-10-31 15:46 ` [patch v6 07/20] signal: Provide posixtimer_sigqueue_init() Thomas Gleixner
2024-10-31 15:46 ` [patch v6 08/20] posix-timers: Store PID type in the timer Thomas Gleixner
2024-10-31 15:46 ` [patch v6 09/20] signal: Refactor send_sigqueue() Thomas Gleixner
2024-10-31 15:46 ` [patch v6 10/20] signal: Replace resched_timer logic Thomas Gleixner
2024-11-01 13:25 ` Frederic Weisbecker
2024-10-31 15:46 ` [patch v6 11/20] posix-timers: Embed sigqueue in struct k_itimer Thomas Gleixner
2024-10-31 15:46 ` [patch v6 12/20] signal: Cleanup unused posix-timer leftovers Thomas Gleixner
2024-10-31 15:46 ` [patch v6 13/20] posix-timers: Move sequence logic into struct k_itimer Thomas Gleixner
2024-10-31 15:46 ` [patch v6 14/20] signal: Provide ignored_posix_timers list Thomas Gleixner
2024-10-31 15:46 ` [patch v6 15/20] posix-timers: Handle ignored list on delete and exit Thomas Gleixner
2024-11-01 13:47 ` Frederic Weisbecker
2024-11-01 20:38 ` Thomas Gleixner
2024-10-31 15:46 ` [patch v6 16/20] signal: Handle ignored signals in do_sigaction(action != SIG_IGN) Thomas Gleixner
2024-11-01 14:04 ` Frederic Weisbecker [this message]
2024-10-31 15:46 ` [patch v6 17/20] signal: Queue ignored posixtimers on ignore list Thomas Gleixner
2024-11-01 14:21 ` Frederic Weisbecker
2024-11-01 20:47 ` Thomas Gleixner
2024-11-02 14:49 ` Thomas Gleixner
2024-11-02 20:57 ` Thomas Gleixner
2024-11-02 23:46 ` Frederic Weisbecker
2024-11-03 9:44 ` Thomas Gleixner
2024-11-03 19:55 ` Frederic Weisbecker
2024-11-02 21:05 ` [patch v6.1 " Thomas Gleixner
2024-11-04 11:42 ` Frederic Weisbecker
2024-11-04 15:21 ` Thomas Gleixner
2024-11-04 21:31 ` Thomas Gleixner
2024-11-04 23:02 ` Frederic Weisbecker
2024-10-31 15:46 ` [patch v6 18/20] posix-timers: Cleanup SIG_IGN workaround leftovers Thomas Gleixner
2024-10-31 15:46 ` [patch v6 19/20] alarmtimers: Remove the throttle mechanism from alarm_forward_now() Thomas Gleixner
2024-10-31 15:46 ` [patch v6 20/20] alarmtimers: Remove return value from alarm functions Thomas Gleixner
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