From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from va-1-113.ptr.blmpb.com (va-1-113.ptr.blmpb.com [209.127.230.113]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 98C573AA1B5 for ; Tue, 16 Jun 2026 11:14:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.127.230.113 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781608481; cv=none; b=Ey1T5A4+oL8NnxetY0mH/8WVCY0RDk2HeMc6oz1IdQFJYz3Ws9hku0ZXAPDxPJ46wdl9QpmOj81erMi51GfSL9Vrkk5ZeK9HGEzwbThV9xH4ZnqGvGj0gIHiAmx0rGklYXlZRjpBOuNny9gZTSUJ47SUeMIOdbfg1CvZZF/hkC0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781608481; c=relaxed/simple; bh=0P122Fn2mUj74BKQlVzqos7y8K6F9Rz84hoFPo6v9F4=; h=To:Message-Id:Subject:Date:Mime-Version:From:In-Reply-To: References:Cc:Content-Type; b=ZOUutX3dxwjf+mXDyNiofdXr9FvI9KsWGhV62AFBi8g45LvgrLpgEAB1FKddX9OdfPPnTaSGz+zuAyrKFDts2LOll+86QQPFeHEEMdGXihSN5j/gVexwWWGRmpEJxc0bGLd9SVOVbFRaxUtaUB84VnStMjPPFaLdiUWTTP89Vx4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=bytedance.com; spf=pass smtp.mailfrom=bytedance.com; dkim=pass (2048-bit key) header.d=bytedance.com header.i=@bytedance.com header.b=PC5PUnH4; arc=none smtp.client-ip=209.127.230.113 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=bytedance.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bytedance.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bytedance.com header.i=@bytedance.com header.b="PC5PUnH4" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; s=2212171451; d=bytedance.com; t=1781608477; h=from:subject: mime-version:from:date:message-id:subject:to:cc:reply-to:content-type: mime-version:in-reply-to:message-id; bh=9UYt8ywRbTQvOGXzJfKVSiQceNMM8+++Ffei3z22Wn4=; b=PC5PUnH4NjYoVJC+S0pk5xv6nyQ4VXV7afbFw5x0PPnLcS6uPpUT7z2DjjU5j1ZqL8ogjt /2YMJ2xN3Y5SjwAapYsIE4E2MSuzclmLF3E7fY3bVE+yKFLRhdxCBIOSTaWcDOe2vMW3Us l4FirpLHF/y5kvc0dnSttLn1UeieaJilVhXRdHrBgSdMA47Iet2fvl1e5E/DzguMXvgdaD mgqGE6HKiY0ISuwe2LmeutRV505IK85JKbXECn3ftSoNHZsrngVpzcIKO+rm7Ky5xFWzax tcIu2LwUU/wuwSUa+xYAZA+BjB2YiayIroI/Hw3LUKsXTPYtIDVJ96hGU63EgQ== To: , , , , , , , , , , , , , Message-Id: <20260616111127.966468-9-zhouchuyi@bytedance.com> X-Lms-Return-Path: Subject: [PATCH v8 08/14] smp: Remove preempt_disable() from on_each_cpu_cond_mask() Date: Tue, 16 Jun 2026 19:11:21 +0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Original-From: Chuyi Zhou From: "Chuyi Zhou" X-Mailer: git-send-email 2.20.1 In-Reply-To: <20260616111127.966468-1-zhouchuyi@bytedance.com> References: <20260616111127.966468-1-zhouchuyi@bytedance.com> Cc: , "Chuyi Zhou" Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=UTF-8 Now smp_call_function_many_cond() internally handles the preemption logic, so on_each_cpu_cond_mask does not need to explicitly disable preemption. Remove preempt_{enable, disable} from on_each_cpu_cond_mask(). Signed-off-by: Chuyi Zhou Reviewed-by: Muchun Song Reviewed-by: Sebastian Andrzej Siewior Tested-by: Paul E. McKenney --- kernel/smp.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/kernel/smp.c b/kernel/smp.c index 096d857dc3a5..0595e0043a23 100644 --- a/kernel/smp.c +++ b/kernel/smp.c @@ -1136,9 +1136,7 @@ void on_each_cpu_cond_mask(smp_cond_func_t cond_func, smp_call_func_t func, if (wait) scf_flags |= SCF_WAIT; - preempt_disable(); smp_call_function_many_cond(mask, func, info, scf_flags, cond_func); - preempt_enable(); } EXPORT_SYMBOL(on_each_cpu_cond_mask); -- 2.20.1