From nobody Thu Dec 18 18:17:39 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 D1C3F26A0C6 for ; Thu, 13 Mar 2025 15:59:50 +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=1741881592; cv=none; b=l+te+frWtpcrvuLh/sB4dE6EtcmmDUqsoJlflJBvrxlOY/U/ccb7SoYg4fLBSpDxzqzeQFJURprZlsK+HdfIrczYHIpubUln38KSd9U6FY5Ja+6LhQ42Y2Z1Re0m6VWx9stvtIO4cvGHOyMz4QkZ+vUITBBo1m8n8uTekuGwaFU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741881592; c=relaxed/simple; bh=ntM8kArfe0z/VjhhrlgBHB8lnNjQHLxcq2864LhbFUg=; h=Message-ID:From:To:Cc:Subject:References:MIME-Version: Content-Type:Date; b=NoT/kn8CIWjqolYYRZHDaLT+0wxudYSd0TGU3uPQh8Y9rp6evoXuG8Bzro0fb2HkU8o9SVHUwDDAgJPLngjEaPkZOHADteRZqc7rsBzLuAznMpGXfkbzjqk6G+08WMaP9bP3U3fbVOygaCdXD/SibIbDOP+eyfk9h3W678DTBBg= 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=Yqz9oADB; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=YRJNLEm8; 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="Yqz9oADB"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="YRJNLEm8" Message-ID: <20250313155914.142099076@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1741881588; 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=zhvgbTp0hOygVEusPPs0+mNX6DOrLT/xrzx98rZIlSk=; b=Yqz9oADB1sWLue193XFQ4oIBUHmRTqGOUoQEnKN9XYAFrczT3X2Ga65xRqXVdnu6ZsdvoD hKtdrUMf/3uxO4f3bseXTof43XEQTw9aW7NC2zxqxEVGLY3oGyocFQfOh7e3ihQjaekEki RbtWefnfiYEynnA9A9uszFZ2NYP0alZag3/EllwR1dW1mrTxKkE8EllAO1vR0SI3tNSUN9 CpIsaouICz9mjvu0uXJfWR/C6mlDLnuhqB5mD1EIkI7YRumraB0CTHhbOf6cA9k7eZqHMb Y/5z/WthCX3zRYLi/BIGtUvwB/azNkAjeuljpzZzeoqNXHJrIxc4JYmNnVnfzg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1741881588; 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=zhvgbTp0hOygVEusPPs0+mNX6DOrLT/xrzx98rZIlSk=; b=YRJNLEm8V5yGk/YTfu47XHj4Kvbo2i9NYMiinRUrk7yPw2dqj2EwIZ1M/a0I/yyU/jZN9a sa1d68ehNVtmH4CQ== From: Thomas Gleixner To: LKML Cc: Peter Zijlstra , Jiri Slaby Subject: [patch 04/46] genirq/pm: Switch to lock guards References: <20250313154615.860723120@linutronix.de> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Date: Thu, 13 Mar 2025 16:59:48 +0100 (CET) Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Convert all lock/unlock pairs to guards and tidy up the code. No functional change. Signed-off-by: Thomas Gleixner --- kernel/irq/pm.c | 38 +++++++++++++------------------------- 1 file changed, 13 insertions(+), 25 deletions(-) --- a/kernel/irq/pm.c +++ b/kernel/irq/pm.c @@ -46,8 +46,7 @@ void irq_pm_install_action(struct irq_de desc->cond_suspend_depth++; =20 WARN_ON_ONCE(desc->no_suspend_depth && - (desc->no_suspend_depth + - desc->cond_suspend_depth) !=3D desc->nr_actions); + (desc->no_suspend_depth + desc->cond_suspend_depth) !=3D desc->nr_a= ctions); } =20 /* @@ -134,14 +133,12 @@ void suspend_device_irqs(void) int irq; =20 for_each_irq_desc(irq, desc) { - unsigned long flags; bool sync; =20 if (irq_settings_is_nested_thread(desc)) continue; - raw_spin_lock_irqsave(&desc->lock, flags); - sync =3D suspend_device_irq(desc); - raw_spin_unlock_irqrestore(&desc->lock, flags); + scoped_guard (raw_spinlock_irqsave, &desc->lock) + sync =3D suspend_device_irq(desc); =20 if (sync) synchronize_irq(irq); @@ -186,18 +183,15 @@ static void resume_irqs(bool want_early) int irq; =20 for_each_irq_desc(irq, desc) { - unsigned long flags; - bool is_early =3D desc->action && - desc->action->flags & IRQF_EARLY_RESUME; + bool is_early =3D desc->action && desc->action->flags & IRQF_EARLY_RESUM= E; =20 if (!is_early && want_early) continue; if (irq_settings_is_nested_thread(desc)) continue; =20 - raw_spin_lock_irqsave(&desc->lock, flags); + guard(raw_spinlock_irqsave)(&desc->lock); resume_irq(desc); - raw_spin_unlock_irqrestore(&desc->lock, flags); } } =20 @@ -207,22 +201,16 @@ static void resume_irqs(bool want_early) */ void rearm_wake_irq(unsigned int irq) { - unsigned long flags; - struct irq_desc *desc =3D irq_get_desc_buslock(irq, &flags, IRQ_GET_DESC_= CHECK_GLOBAL); + scoped_irqdesc_get_and_buslock(irq, IRQ_GET_DESC_CHECK_GLOBAL) { + struct irq_desc *desc =3D scoped_irqdesc; =20 - if (!desc) - return; - - if (!(desc->istate & IRQS_SUSPENDED) || - !irqd_is_wakeup_set(&desc->irq_data)) - goto unlock; - - desc->istate &=3D ~IRQS_SUSPENDED; - irqd_set(&desc->irq_data, IRQD_WAKEUP_ARMED); - __enable_irq(desc); + if (!(desc->istate & IRQS_SUSPENDED) || !irqd_is_wakeup_set(&desc->irq_d= ata)) + return; =20 -unlock: - irq_put_desc_busunlock(desc, flags); + desc->istate &=3D ~IRQS_SUSPENDED; + irqd_set(&desc->irq_data, IRQD_WAKEUP_ARMED); + __enable_irq(desc); + } } =20 /**