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From: Thomas Gleixner <tglx@linutronix.de>
To: Frederic Weisbecker <frederic@kernel.org>
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 17/20] signal: Queue ignored posixtimers on ignore list
Date: Sun, 03 Nov 2024 10:44:35 +0100	[thread overview]
Message-ID: <871pzsr6rg.ffs@tglx> (raw)
In-Reply-To: <Zya5wy9UyVo2cRvq@pavilion.home>

On Sun, Nov 03 2024 at 00:46, Frederic Weisbecker wrote:
> And what about the other callers of flush_sigqueue_mask()? Such as SIGCONT
> removed when SIGSTOP arrives? And the reverse as well? This moves the pending
> timers signals to the ignore list until the signal is unignored, but in that
> case SIGCONT is not ignored? Or perhaps SIGCONT and SIGSTOP can't be set for
> posix timers?

You can set SIGSTOP/CONT on a posix timer. Whether that makes sense or
not is a different question :)

Even on current mainline the behaviour is pretty much unspecified. Some
combinations "work", some not. I just tried out of morbid curiousity. :)

Thanks,

        tglx



  reply	other threads:[~2024-11-03  9:44 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
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 [this message]
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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