From nobody Tue Feb 10 08:27:08 2026 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 86FA33D3D0C for ; Tue, 20 Jan 2026 09:23:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=114.242.206.163 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768901035; cv=none; b=Gl/Xf3699PdQM9GA9m97czcq93tLfrO+a8dQ/RdYu+xua8ml60FpGZ7bKIwZxAyBP+3z1Gs09p455E2xust7Pz2ZPC+dm0/8qGBV63fpm1Oim0NPIo74qUJ4X9GbTXVWN1f0ovpbmNJ9ZOTgriHTaOXRhu+MuB17j7lp6uQqZ8c= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768901035; c=relaxed/simple; bh=CNQuEBB8Aif3xuCUvn2xPM7tbnqDc+7YaokdyGyZIP0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=lqfj+TJkQmMWatT5KgkfoF34nWwUWp9hSEK2mL56uDKycdcGHNTGbS8uHL+kJ0qlAj0sJWan8QC4mYQs20JONz2vlxGKwdmKQEsTSUZJlh0rmHWb4CGawFpzBU74a8a078nCkeR/jBXZRTjMzjbLs+oPL8DVPc57fYlpwxkOSW8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn; spf=pass smtp.mailfrom=loongson.cn; arc=none smtp.client-ip=114.242.206.163 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=loongson.cn Received: from loongson.cn (unknown [113.200.148.30]) by gateway (Coremail) with SMTP id _____8Cx58GgSW9pWacKAA--.22729S3; Tue, 20 Jan 2026 17:23:44 +0800 (CST) Received: from linux.localdomain (unknown [113.200.148.30]) by front1 (Coremail) with SMTP id qMiowJCxHOGSSW9pD3InAA--.14911S6; Tue, 20 Jan 2026 17:23:43 +0800 (CST) From: Tiezhu Yang To: Huacai Chen Cc: loongarch@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [PATCH v1 4/4] LoongArch: Guard percpu handler under !CONFIG_PREEMPT_RT Date: Tue, 20 Jan 2026 17:23:31 +0800 Message-ID: <20260120092331.813-5-yangtiezhu@loongson.cn> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20260120092331.813-1-yangtiezhu@loongson.cn> References: <20260120092331.813-1-yangtiezhu@loongson.cn> 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-CM-TRANSID: qMiowJCxHOGSSW9pD3InAA--.14911S6 X-CM-SenderInfo: p1dqw3xlh2x3gn0dqz5rrqw2lrqou0/ X-Coremail-Antispam: 1Uk129KBj9xXoWrZF4xArWfWw1DWw1DKr4rZwc_yoWfWwcEgw s7Cw4vkrWrXF909w1aqw4rZ347Xw10gFZYkF1kAr4xA3WYyFn5JrZ3J3s8u390qrZ8WrZ8 t3yqqr9akrnFkosvyTuYvTs0mTUanT9S1TB71UUUUUDqnTZGkaVYY2UrUUUUj1kv1TuYvT s0mT0YCTnIWjqI5I8CrVACY4xI64kE6c02F40Ex7xfYxn0WfASr-VFAUDa7-sFnT9fnUUI cSsGvfJTRUUUb28YFVCjjxCrM7AC8VAFwI0_Jr0_Gr1l1xkIjI8I6I8E6xAIw20EY4v20x vaj40_Wr0E3s1l1IIY67AEw4v_Jrv_JF1l8cAvFVAK0II2c7xJM28CjxkF64kEwVA0rcxS w2x7M28EF7xvwVC0I7IYx2IY67AKxVW8JVW5JwA2z4x0Y4vE2Ix0cI8IcVCY1x0267AKxV W8JVWxJwA2z4x0Y4vEx4A2jsIE14v26r4UJVWxJr1l84ACjcxK6I8E87Iv6xkF7I0E14v2 6r4UJVWxJr1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqjxCEc2xF0cIa020Ex4CE44I27w Aqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E2Ix0cI8IcVAFwI0_Jw0_WrylYx0Ex4A2jsIE 14v26r4j6F4UMcvjeVCFs4IE7xkEbVWUJVW8JwACjcxG0xvY0x0EwIxGrwCF04k20xvY0x 0EwIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E 7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_Jrv_JF1lIxkGc2Ij64vIr41lIxAIcV C0I7IYx2IY67AKxVW8JVW5JwCI42IY6xIIjxv20xvEc7CjxVAFwI0_Gr0_Cr1lIxAIcVCF 04k26cxKx2IYs7xG6r1j6r1xMIIF0xvEx4A2jsIE14v26r4j6F4UMIIF0xvEx4A2jsIEc7 CjxVAFwI0_Gr0_Gr1UYxBIdaVFxhVjvjDU0xZFpf9x07josjUUUUUU= Content-Type: text/plain; charset="utf-8" After commit 88fd2b70120d ("LoongArch: Fix sleeping in atomic context for PREEMPT_RT"), it should guard percpu handler under !CONFIG_PREEMPT_RT to avoid redundant operations. Signed-off-by: Tiezhu Yang --- arch/loongarch/kernel/unwind_prologue.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/loongarch/kernel/unwind_prologue.c b/arch/loongarch/kerne= l/unwind_prologue.c index d04498d8090e..da07acad7973 100644 --- a/arch/loongarch/kernel/unwind_prologue.c +++ b/arch/loongarch/kernel/unwind_prologue.c @@ -61,7 +61,7 @@ static inline bool scan_handlers(unsigned long entry_offs= et) =20 static inline bool fix_exception(unsigned long pc) { -#ifdef CONFIG_NUMA +#if defined(CONFIG_NUMA) && !defined(CONFIG_PREEMPT_RT) int cpu; =20 for_each_possible_cpu(cpu) { --=20 2.42.0