From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 E548F26D4E2 for ; Wed, 28 May 2025 08:11:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748419881; cv=none; b=BvBrmdQQak7piE9qgQk1dferGBaGDMJnnctKGgXfn/HX4t3mPfcaWsz1fUGVE4T9+2DLV+wrNm0y4A3DvibJnBCo+NsmPjArkNz2+JVLrlWeBl739YIXLe12JAJWVqlzuMhcroImswlLhudr/8h+bHtHATNjrtHfErR0ixhOPE0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748419881; c=relaxed/simple; bh=CwbGVD7ViB6aFSnaChoiYxmAyKxsY+s2o/PK3zPWAOU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=GgLdR7DLIks65mi/B/9jF3Me02jQAY2YL5F9E5pBCJW2BnEUnNhqCto1eQH2Htmc6K3hsP067BFytb82wZLAX/NjrouzL+JXsiZdaWkArlKIig8qJ4xsda8sTB1MHXBafAQbwEi+LqYSSAO9NbqJVONAJZVbOmNeilQ+69YbyX4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=pTCK4oP5; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="pTCK4oP5" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 54AF9C4CEEB; Wed, 28 May 2025 08:11:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1748419880; bh=CwbGVD7ViB6aFSnaChoiYxmAyKxsY+s2o/PK3zPWAOU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pTCK4oP5Ysa1Bb0D4duEeVwq5ZVsT19IYi7Czlmo5CaXlD3Hy7kTFCTytVwJ1S1c4 tYkpGkUMywYgmto17lSokBolYRcevWkuO86RxRQdH//h8Zd41EYvUlCrvjPbjC7eqi Xgi+1HU/cqxE79b2jh1r1K813Xv+YL8LfPeiys/3YQBFx1Q0/ZKrmXLwDPAifBdm/h bfGAi6x1RliilT/hih7JiW0M5lw+uRbdIXsVjaE91LQlYQoP/1lgrCPzq2ZSkTPQvX MXHPVh+mowcmiTlc5+KXcmg5817eS7MdpeyqVfpw+b6wNJFEUorCx8+HNmSrHaoMyW jMPgnOkiclQlA== From: Ingo Molnar To: linux-kernel@vger.kernel.org Cc: Dietmar Eggemann , Linus Torvalds , Peter Zijlstra , Shrikanth Hegde , Thomas Gleixner , Valentin Schneider , Steven Rostedt , Mel Gorman , Vincent Guittot , Sebastian Andrzej Siewior , Ingo Molnar , Juri Lelli Subject: [PATCH 26/43] sched/smp: Use the SMP version of sched_exec() Date: Wed, 28 May 2025 10:09:07 +0200 Message-ID: <20250528080924.2273858-27-mingo@kernel.org> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20250528080924.2273858-1-mingo@kernel.org> References: <20250528080924.2273858-1-mingo@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Simplify the scheduler by making formerly SMP-only primitives and data structures unconditional. Signed-off-by: Ingo Molnar Cc: Dietmar Eggemann Cc: Juri Lelli Cc: Linus Torvalds Cc: Mel Gorman Cc: Peter Zijlstra Cc: Shrikanth Hegde Cc: Steven Rostedt Cc: Valentin Schneider Cc: Vincent Guittot --- include/linux/sched/task.h | 4 ---- kernel/sched/core.c | 4 ---- 2 files changed, 8 deletions(-) diff --git a/include/linux/sched/task.h b/include/linux/sched/task.h index ca1db4b92c32..c517dbc242f7 100644 --- a/include/linux/sched/task.h +++ b/include/linux/sched/task.h @@ -109,11 +109,7 @@ int kernel_wait(pid_t pid, int *stat); extern void free_task(struct task_struct *tsk); /* sched_exec is called by processes performing an exec */ -#ifdef CONFIG_SMP extern void sched_exec(void); -#else -#define sched_exec() {} -#endif static inline struct task_struct *get_task_struct(struct task_struct *t) { diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 5a77afcbb60b..ac933e6fc465 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -5415,8 +5415,6 @@ unsigned int nr_iowait(void) return sum; } -#ifdef CONFIG_SMP - /* * sched_exec - execve() is a valuable balancing opportunity, because at * this point the task has the smallest effective memory and cache footprint. @@ -5440,8 +5438,6 @@ void sched_exec(void) stop_one_cpu(task_cpu(p), migration_cpu_stop, &arg); } -#endif /* CONFIG_SMP */ - DEFINE_PER_CPU(struct kernel_stat, kstat); DEFINE_PER_CPU(struct kernel_cpustat, kernel_cpustat); -- 2.45.2