From nobody Wed Dec 4 18:46:12 2024 Received: from szxga05-in.huawei.com (szxga05-in.huawei.com [45.249.212.191]) (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 A889C201017 for ; Fri, 25 Oct 2024 10:08:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.191 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729850933; cv=none; b=pzqCwb6PrE9c5BD4F1jL9x8erB/8JBhI2PFYwf5NbcZo8rE5n24dahpRZSSn0GnTNfULMBNOZ+tuNmqE/fFPIpoOj9gjFHkx7Zg0P6/zD45Tn6P9n4PQbvkLHXlJVfW/9ydSwWgmh9uXD1ZJOBm71U/X2u926wkorecNF0cu12k= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729850933; c=relaxed/simple; bh=N+SRuvOelmKf4isWCLciC4gqRGgc2Cyj+tD9maRjaf0=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=uJCWgYNSGa6YTRd82ToQ+L0AweDAj8aqj1O08sj4hhkutFTxubBQrVceSf3+Xi6isp364udxakqiLHtHnoqWhB9yLrd2p7J9JaooN0+2Yyn1HgTYlJy9VM/8QsRhDsZ6BRFcQTtKDKRBPrHU0IAjltq3W295hkEOmCjHsCct6Fg= 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=45.249.212.191 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 [172.19.163.17]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4XZdfx13mZz1HLR8; Fri, 25 Oct 2024 18:04:25 +0800 (CST) Received: from kwepemg200008.china.huawei.com (unknown [7.202.181.35]) by mail.maildlp.com (Postfix) with ESMTPS id 357351A0188; Fri, 25 Oct 2024 18:08:48 +0800 (CST) Received: from huawei.com (10.90.53.73) by kwepemg200008.china.huawei.com (7.202.181.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Fri, 25 Oct 2024 18:08:46 +0800 From: Jinjie Ruan To: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH -next v4 11/19] arm64: entry: Extract raw_irqentry_exit_cond_resched() function Date: Fri, 25 Oct 2024 18:06:52 +0800 Message-ID: <20241025100700.3714552-12-ruanjinjie@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241025100700.3714552-1-ruanjinjie@huawei.com> References: <20241025100700.3714552-1-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: dggems701-chm.china.huawei.com (10.3.19.178) To kwepemg200008.china.huawei.com (7.202.181.35) Content-Type: text/plain; charset="utf-8" Extract the arm64 resched logic code to raw_irqentry_exit_cond_resched() function, which makes the code more clear when switch to generic entry. No functional changes. Signed-off-by: Jinjie Ruan --- arch/arm64/include/asm/preempt.h | 1 + arch/arm64/kernel/entry-common.c | 17 ++++++++++------- 2 files changed, 11 insertions(+), 7 deletions(-) diff --git a/arch/arm64/include/asm/preempt.h b/arch/arm64/include/asm/pree= mpt.h index 0159b625cc7f..d0f93385bd85 100644 --- a/arch/arm64/include/asm/preempt.h +++ b/arch/arm64/include/asm/preempt.h @@ -85,6 +85,7 @@ static inline bool should_resched(int preempt_offset) void preempt_schedule(void); void preempt_schedule_notrace(void); =20 +void raw_irqentry_exit_cond_resched(void); #ifdef CONFIG_PREEMPT_DYNAMIC =20 DECLARE_STATIC_KEY_TRUE(sk_dynamic_irqentry_exit_cond_resched); diff --git a/arch/arm64/kernel/entry-common.c b/arch/arm64/kernel/entry-com= mon.c index 58d660878c09..5b7df53cfcf6 100644 --- a/arch/arm64/kernel/entry-common.c +++ b/arch/arm64/kernel/entry-common.c @@ -95,6 +95,14 @@ static inline bool arm64_irqentry_exit_need_resched(void) return true; } =20 +void raw_irqentry_exit_cond_resched(void) +{ + if (!preempt_count()) { + if (need_resched() && arm64_irqentry_exit_need_resched()) + preempt_schedule_irq(); + } +} + /* * Handle IRQ/context state management when exiting to kernel mode. * After this function returns it is not safe to call regular kernel code, @@ -119,13 +127,8 @@ static void noinstr exit_to_kernel_mode(struct pt_regs= *regs, return; } =20 - if (IS_ENABLED(CONFIG_PREEMPTION)) { - if (!preempt_count()) { - if (need_resched() && - arm64_irqentry_exit_need_resched()) - preempt_schedule_irq(); - } - } + if (IS_ENABLED(CONFIG_PREEMPTION)) + raw_irqentry_exit_cond_resched(); =20 trace_hardirqs_on(); } else { --=20 2.34.1