From nobody Fri Dec 19 20:10:18 2025 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E850A13248B for ; Wed, 10 Apr 2024 22:47:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712789251; cv=none; b=BFZkKHGkgG48gpNev/rwJTF3/L4jymuaKNPtGxiRjpuR1bRahcUejMqMbb0BMnIPag7ybpFGSk6FVjQeujlanOpcNq1OGCuLI2YteJU4UnSo3S+PBc5sZP1zYgdRyBZVgqfp1YNbKbo4QOeDlMdqHqWtwwPFrLEDegoNKJUGCJI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712789251; c=relaxed/simple; bh=H8C4ae3qB9pJTAhYrEUW6UIkzelbDNrIyM/SxoxcYVc=; h=Message-ID:From:To:Cc:Subject:References:MIME-Version: Content-Type:Date; b=Ms2m+6btisAVZ5j2KUp1HijTjKVJRMdBV0SvHIu4mIl4K8YZo9vyxvJ/SJSJXfKilz79NcP7kVAy2e+98N0ukcCYTQBfB1lpcO1SjVl6KTnHjmmQYBJSkWqBsqNRmghYTSsaUU1B+dpBjrAie7F4lf5lbhNbgvZwPQ9gIUHcO2U= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=SIHbGenp; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=lUXOrPoD; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="SIHbGenp"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="lUXOrPoD" Message-ID: <20240410165553.636753630@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1712789248; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=gS0GunzjJF0mIhSZ9sJXDkEdhMOznUExWpmLyjVDd8s=; b=SIHbGenp76SOLVBs2dAVyy4fAMu+LZLTM/FfoCydWnvcOyeVcs0e2Ctnjy6Y3/oIYFsoHp mrVNV4oTcW8ky86GK0kmy7K3qFC9zlG46RxpYdZW8NlJGpp0ubRHiocrJXiC3Xn/y+gcFA OcBNNZhUfevnKD2S33f0OhFo3NQGgy7gRXVQJ+PF9CoTGszsQNp6eycRPcHTLDWik39P4g NRJoEPEguuLlfD5qgVkRTnhfqcUjJpyVvJ6RM/DOET2BEyFBEzBqOdvhP0oeEbF5ZqiOl8 eIalQiEhI3gvxVJspxs4rq+Vl9lEiJ77YGLjK+wpv98S5Hdnnzai8XsoCwcY7A== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1712789248; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=gS0GunzjJF0mIhSZ9sJXDkEdhMOznUExWpmLyjVDd8s=; b=lUXOrPoD+iJthx03iSV1MRAA+nF/RxjZnoJ9yWD7k+5odTGsMjLbHg9bA3O3ehohvd+mkR 38HzHIdZlHcR+uDQ== From: Thomas Gleixner To: LKML Cc: Anna-Maria Behnsen , Frederic Weisbecker , John Stultz , Peter Zijlstra , Ingo Molnar , Stephen Boyd , Eric Biederman , Oleg Nesterov Subject: [patch V2 43/50] signal: Add task argument to flush_sigqueue_mask() References: <20240410164558.316665885@linutronix.de> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Date: Thu, 11 Apr 2024 00:47:27 +0200 (CEST) Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" To prepare for handling posix timer signals on sigaction(SIG_IGN) properly, add a task argument to flush_sigqueue_mask() and fixup all call sites. This argument will be used in a later step to enqueue posix timers on an ignored list, so their signal can be requeued when SIG_IGN is lifted later on. Signed-off-by: Thomas Gleixner --- kernel/signal.c | 19 +++++++++---------- 1 file changed, 9 insertions(+), 10 deletions(-) --- a/kernel/signal.c +++ b/kernel/signal.c @@ -724,11 +724,10 @@ void signal_wake_up_state(struct task_st =20 /* * Remove signals in mask from the pending set and queue. - * Returns 1 if any signals were found. * * All callers must be holding the siglock. */ -static void flush_sigqueue_mask(sigset_t *mask, struct sigpending *s) +static void flush_sigqueue_mask(sigset_t *mask, struct sigpending *s, stru= ct task_struct *ptmr_tsk) { struct sigqueue *q, *n; sigset_t m; @@ -866,18 +865,18 @@ static bool prepare_signal(int sig, stru * This is a stop signal. Remove SIGCONT from all queues. */ siginitset(&flush, sigmask(SIGCONT)); - flush_sigqueue_mask(&flush, &signal->shared_pending); + flush_sigqueue_mask(&flush, &signal->shared_pending, NULL); for_each_thread(p, t) - flush_sigqueue_mask(&flush, &t->pending); + flush_sigqueue_mask(&flush, &t->pending, NULL); } else if (sig =3D=3D SIGCONT) { unsigned int why; /* * Remove all stop signals from all queues, wake all threads. */ siginitset(&flush, SIG_KERNEL_STOP_MASK); - flush_sigqueue_mask(&flush, &signal->shared_pending); + flush_sigqueue_mask(&flush, &signal->shared_pending, NULL); for_each_thread(p, t) { - flush_sigqueue_mask(&flush, &t->pending); + flush_sigqueue_mask(&flush, &t->pending, NULL); task_clear_jobctl_pending(t, JOBCTL_STOP_PENDING); if (likely(!(t->ptrace & PT_SEIZED))) { t->jobctl &=3D ~JOBCTL_STOPPED; @@ -4155,8 +4154,8 @@ void kernel_sigaction(int sig, __sighand sigemptyset(&mask); sigaddset(&mask, sig); =20 - flush_sigqueue_mask(&mask, ¤t->signal->shared_pending); - flush_sigqueue_mask(&mask, ¤t->pending); + flush_sigqueue_mask(&mask, ¤t->signal->shared_pending, NULL); + flush_sigqueue_mask(&mask, ¤t->pending, NULL); recalc_sigpending(); } spin_unlock_irq(¤t->sighand->siglock); @@ -4223,9 +4222,9 @@ int do_sigaction(int sig, struct k_sigac if (sig_handler_ignored(sig_handler(p, sig), sig)) { sigemptyset(&mask); sigaddset(&mask, sig); - flush_sigqueue_mask(&mask, &p->signal->shared_pending); + flush_sigqueue_mask(&mask, &p->signal->shared_pending, NULL); for_each_thread(p, t) - flush_sigqueue_mask(&mask, &t->pending); + flush_sigqueue_mask(&mask, &t->pending, NULL); } }