From nobody Sat Oct 4 01:39:25 2025 Received: from szxga04-in.huawei.com (szxga04-in.huawei.com [45.249.212.190]) (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 E1807149C51; Fri, 22 Aug 2025 03:40:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.190 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755834007; cv=none; b=q8FOgPjBA2s5o8Pba8XLRl41/p837MwwJSAF9i3QxXXa53BHMhF1Na2S+p+wC5MMuy8VKjdaNXDYZRbA3PPsFGuCdPiDm485/X/McVKehwOPszrlVGi7KHtXGO/gYtGBj+bIogpoCUWFw8EKJr/u0Pc546k1GncanQG9WK/4hng= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755834007; c=relaxed/simple; bh=hl1ahRqr0Hx8MBa+5gJepmtiV6uxU/SrD8IW7SLclm4=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=WNAFElMW4e91CXavvkbEiTtGkgV9Au7dKdabvFiZ77gBP3TaC5/TIoBuvs5G3MNU6Rfh1PFNbAeAvks9SCxp8SkjJxU5iU9iNpcKYR4LYY3zBTaiy6ee6o8JnT3fxxFJGAXjWzAyvo7bXk9ss6CcuImBNQv6HRsbGPl+bWnsxf0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.190 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.88.214]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4c7QnR4WSpz2CfcF; Fri, 22 Aug 2025 11:35:39 +0800 (CST) Received: from dggpemf500011.china.huawei.com (unknown [7.185.36.131]) by mail.maildlp.com (Postfix) with ESMTPS id 290F51A016C; Fri, 22 Aug 2025 11:40:03 +0800 (CST) Received: from huawei.com (10.67.174.55) by dggpemf500011.china.huawei.com (7.185.36.131) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Fri, 22 Aug 2025 11:40:02 +0800 From: Jinjie Ruan To: , , , , , , , , , CC: Subject: [PATCH v5.15 RESEND 1/2] x86/irq: Factor out handler invocation from common_interrupt() Date: Fri, 22 Aug 2025 03:36:07 +0000 Message-ID: <20250822033608.1096607-2-ruanjinjie@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250822033608.1096607-1-ruanjinjie@huawei.com> References: <20250822033608.1096607-1-ruanjinjie@huawei.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: kwepems500002.china.huawei.com (7.221.188.17) To dggpemf500011.china.huawei.com (7.185.36.131) Content-Type: text/plain; charset="utf-8" From: Jacob Pan commit 6087c7f36ab293a06bc0bcf3857ed4d7eb1f9905 upstream. Prepare for calling external interrupt handlers directly from the posted MSI demultiplexing loop. Extract the common code from common_interrupt() to avoid code duplication. Signed-off-by: Jacob Pan Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/r/20240423174114.526704-8-jacob.jun.pan@linux= .intel.com Signed-off-by: Jinjie Ruan --- arch/x86/kernel/irq.c | 23 ++++++++++++++--------- 1 file changed, 14 insertions(+), 9 deletions(-) diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c index 439fdb3f5fdf..11d7233397df 100644 --- a/arch/x86/kernel/irq.c +++ b/arch/x86/kernel/irq.c @@ -235,18 +235,10 @@ static __always_inline void handle_irq(struct irq_des= c *desc, __handle_irq(desc, regs); } =20 -/* - * common_interrupt() handles all normal device IRQ's (the special SMP - * cross-CPU interrupts have their own entry points). - */ -DEFINE_IDTENTRY_IRQ(common_interrupt) +static __always_inline void call_irq_handler(int vector, struct pt_regs *r= egs) { - struct pt_regs *old_regs =3D set_irq_regs(regs); struct irq_desc *desc; =20 - /* entry code tells RCU that we're not quiescent. Check it. */ - RCU_LOCKDEP_WARN(!rcu_is_watching(), "IRQ failed to wake up RCU"); - desc =3D __this_cpu_read(vector_irq[vector]); if (likely(!IS_ERR_OR_NULL(desc))) { handle_irq(desc, regs); @@ -261,7 +253,20 @@ DEFINE_IDTENTRY_IRQ(common_interrupt) __this_cpu_write(vector_irq[vector], VECTOR_UNUSED); } } +} + +/* + * common_interrupt() handles all normal device IRQ's (the special SMP + * cross-CPU interrupts have their own entry points). + */ +DEFINE_IDTENTRY_IRQ(common_interrupt) +{ + struct pt_regs *old_regs =3D set_irq_regs(regs); + + /* entry code tells RCU that we're not quiescent. Check it. */ + RCU_LOCKDEP_WARN(!rcu_is_watching(), "IRQ failed to wake up RCU"); =20 + call_irq_handler(vector, regs); set_irq_regs(old_regs); } =20 --=20 2.34.1