From nobody Fri Oct 10 18:14:30 2025 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (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 7B7A32E7623; Fri, 13 Jun 2025 07:37:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749800239; cv=none; b=g/NQk5H+fxRVHw1b8hT2bXojIoaz3VaNRe6TbHTVMqaozLa6JcyHoA0R/J7J5yCejvSBS2bP0eIJl7/hHOd0NbKV70oRREbFsvLSRj/oTxj3hfTTYuDQIkGPyahJT2reUaW+jKc5mM06Y8AbYoGU/N/3R8YR1HmQcNDw32BF960= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749800239; c=relaxed/simple; bh=Gz3YO/rkYO2yQM88vcS8E2BXUe0crAailWWojf3Bs5c=; h=Date:From:To:Subject:Cc:In-Reply-To:References:MIME-Version: Message-ID:Content-Type; b=kXeAsoxrMnwOsjpNUeHGUMOrbKDLT6NUL+FFPYzu2foC1vmIa/BD4JKXZKmde3Eay0HnW+8Up2aQ6fI4KF9vTdG0JN3Nf8CXhcElvRJPne5eIJNkmohtYJiVFArFE/2TkN0mwc4K7g1GESB7uzOkGq+EyoaCwgWYLHOlhIx9r8g= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=S3R3b/AR; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=poHaB9Oh; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="S3R3b/AR"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="poHaB9Oh" Date: Fri, 13 Jun 2025 07:37:15 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1749800236; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=hUbrOoGU9ePGcNLbGKyMHzpLE5Kymvi6zsbRMn2/Fhw=; b=S3R3b/ARzTQWHeXRocXs4R/E5DHK0HaGyjJVrRoTxxbFP1rIZmmaJh/oTkAk0pTtpK+cXG hjmxLR9TjZO7p5DGn/PToss4kSbGlmqmTVlaUZA4MuvZkHpgUqHGoq8mo3mXwkK12ZLTW2 3NTghsdxQZkZGm9cq2pk5dp4N/jyoKt0FJQSqfkUKW1iTtXjRSsrc1xVbWU4X192/3l9/C Yuj8dPb6ANrrmIaJBCrusWUfK8wbGHZwFLzOhmZit+ntdvn+XRnFaZ+jNosNvu96h9yicK Pa0TpFbhhwliQspX4GTsfLOCVrq9T2liQ2yVGKTP6BVyAA1caUGK8zvjfhFV2Q== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1749800236; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=hUbrOoGU9ePGcNLbGKyMHzpLE5Kymvi6zsbRMn2/Fhw=; b=poHaB9Ohw7chnej57ldRA/2BA0I9b5GdmxzcFze5hBXU+2HvozXfKJEWwrwn550HNYCV/z Bw8XzZ1/HxSABCCg== From: "tip-bot2 for Ingo Molnar" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: sched/core] sched/smp: Use the SMP version of the scheduler syscalls Cc: Ingo Molnar , Peter Zijlstra , Dietmar Eggemann , Juri Lelli , Linus Torvalds , Mel Gorman , Sebastian Andrzej Siewior , Shrikanth Hegde , Steven Rostedt , Valentin Schneider , Vincent Guittot , x86@kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20250528080924.2273858-33-mingo@kernel.org> References: <20250528080924.2273858-33-mingo@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <174980023505.406.1464364783824682136.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Precedence: bulk Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable The following commit has been merged into the sched/core branch of tip: Commit-ID: 8a9246ddc16c0feaa3b09ca9d2e30fbfa88d09de Gitweb: https://git.kernel.org/tip/8a9246ddc16c0feaa3b09ca9d2e30fbfa= 88d09de Author: Ingo Molnar AuthorDate: Wed, 28 May 2025 10:09:13 +02:00 Committer: Ingo Molnar CommitterDate: Fri, 13 Jun 2025 08:47:21 +02:00 sched/smp: Use the SMP version of the scheduler syscalls Simplify the scheduler by making CONFIG_SMP=3Dy code in idle_cpu(), __sched_setscheduler() and sched_setaffinity() unconditional. Signed-off-by: Ingo Molnar Acked-by: Peter Zijlstra Cc: Dietmar Eggemann Cc: Juri Lelli Cc: Linus Torvalds Cc: Mel Gorman Cc: Sebastian Andrzej Siewior Cc: Shrikanth Hegde Cc: Steven Rostedt Cc: Valentin Schneider Cc: Vincent Guittot Link: https://lore.kernel.org/r/20250528080924.2273858-33-mingo@kernel.org --- kernel/sched/syscalls.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/kernel/sched/syscalls.c b/kernel/sched/syscalls.c index d7fccf8..77ae87f 100644 --- a/kernel/sched/syscalls.c +++ b/kernel/sched/syscalls.c @@ -209,10 +209,8 @@ int idle_cpu(int cpu) if (rq->nr_running) return 0; =20 -#ifdef CONFIG_SMP if (rq->ttwu_pending) return 0; -#endif =20 return 1; } @@ -641,7 +639,6 @@ change: goto unlock; } #endif /* CONFIG_RT_GROUP_SCHED */ -#ifdef CONFIG_SMP if (dl_bandwidth_enabled() && dl_policy(policy) && !(attr->sched_flags & SCHED_FLAG_SUGOV)) { cpumask_t *span =3D rq->rd->span; @@ -657,7 +654,6 @@ change: goto unlock; } } -#endif /* CONFIG_SMP */ } =20 /* Re-check policy now with rq lock held: */ @@ -1239,7 +1235,7 @@ long sched_setaffinity(pid_t pid, const struct cpumas= k *in_mask) user_mask =3D alloc_user_cpus_ptr(NUMA_NO_NODE); if (user_mask) { cpumask_copy(user_mask, in_mask); - } else if (IS_ENABLED(CONFIG_SMP)) { + } else { return -ENOMEM; }