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 8D3EB272E6F for ; Wed, 28 May 2025 08:11:48 +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=1748419908; cv=none; b=WRLEsWSUPp2uLc9TdFGqOEP89JsV4dRxWaiPYprGgkSvc87xDZM56XA4T7aw31Zqadgybe7jpbTuG1316s366luaS1SnY58pHmtweayddpGa1bnsmAuw6XMFwWlUH5lQMkF99z4bameY7wj1H1hfC/ktmn1kT82P6tyOgv3FP5o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1748419908; c=relaxed/simple; bh=L9VeFm6TXPaYNLcRaVe3jedRlD2BYFO33qmbvkTkCBA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=qAeAVBua++Io1FmJCPU1OPjUjmB126m15XrMNGIDhkTw91vkoDEFOWT0+YUdcayg4payon7nDuefV0d54RkWK+H/rL9p41L+63bhi2U/X707Vlf3mJjClO2d0BdoIAfDgQns9FhqEorSKgik6H8ENYR08XuQuJYEHll1shmQ8jU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=iPwy8Meu; 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="iPwy8Meu" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 655F1C4CEEB; Wed, 28 May 2025 08:11:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1748419908; bh=L9VeFm6TXPaYNLcRaVe3jedRlD2BYFO33qmbvkTkCBA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=iPwy8Meu7GdH8nXph6bPh7x66XI9JgcgaM/jui9JgYs1EKZbLtS47BxVLQEzrZ3ne hWGuKeoioFdSDRS5Vh+NxFWN6NkGwSusD0nva6dGASGrH1wbxhWE9O6MpxcNGEMvMQ HEjs/OO0V6POqJJ4oCeO4oI0h9EIVBNRRkQrLZTpUAMru6FwflDmQINjsoxwZyrNTW AMGiBnpLGqDS8Q1YLMgB26yHI7Fs/CIQhqSOQ0/hK+8EBpXPFG5/Fb62PQqkOJ0pOp AVS0rjXla71MrePkxtUeVhk2ZxbdQuHppefZJRndVPWiaugEXkie7H2Uc6X4c4sCwX tiZXrex5/3OQQ== 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 34/43] sched/smp: Use the SMP version of the idle scheduling class Date: Wed, 28 May 2025 10:09:15 +0200 Message-ID: <20250528080924.2273858-35-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 --- kernel/sched/idle.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/kernel/sched/idle.c b/kernel/sched/idle.c index cb01b063d733..2571ce6908a1 100644 --- a/kernel/sched/idle.c +++ b/kernel/sched/idle.c @@ -427,7 +427,6 @@ void cpu_startup_entry(enum cpuhp_state state) * idle-task scheduling class. */ -#ifdef CONFIG_SMP static int select_task_rq_idle(struct task_struct *p, int cpu, int flags) { @@ -439,7 +438,6 @@ balance_idle(struct rq *rq, struct task_struct *prev, struct rq_flags *rf) { return WARN_ON_ONCE(1); } -#endif /* CONFIG_SMP */ /* * Idle tasks are unconditionally rescheduled: @@ -526,11 +524,9 @@ DEFINE_SCHED_CLASS(idle) = { .put_prev_task = put_prev_task_idle, .set_next_task = set_next_task_idle, -#ifdef CONFIG_SMP .balance = balance_idle, .select_task_rq = select_task_rq_idle, .set_cpus_allowed = set_cpus_allowed_common, -#endif .task_tick = task_tick_idle, -- 2.45.2