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 5F747309DD2; Mon, 13 Oct 2025 20:34:19 +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=1760387659; cv=none; b=B2zLN/qJdHvn5S9dkbT9qT+EhwlqhYeOFl3ypowywIlYqiyVat7aFOrgkfQYMvGqN7JVSeuCP6H7r77v/IkG0dvCkkubuStAZ/T0zmDldsIarDPv3XpIPhEBDuWV8DesrtgGij0i6eQDDqFA7NC7k7yJT2KzaYpy0GexXeqUjy8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760387659; c=relaxed/simple; bh=FzweRnNZ3rpHmeDAR8nh52t/LTbWmLRPuC53BTe2K5M=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=jScpBjUBvdR7USwZ3/DANUWioH/F+X2aUngsxncYKP/jWfAYk/Us4X4rzMrBAPgvbvPgnin09cUoLRT14hOpwB90Sny/b9Ws3ciDlSAed2TSc2xKR++Z0b6RuUPeRTxYGSMtsGO8RWP8ww86BVZJ/6mSmc9pHY2tTCLRx2EZhOw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Y98xRz6h; 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="Y98xRz6h" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 62D6CC4CEFE; Mon, 13 Oct 2025 20:34:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1760387658; bh=FzweRnNZ3rpHmeDAR8nh52t/LTbWmLRPuC53BTe2K5M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Y98xRz6h268U7IXnYXzrzxvIyBXE9M4gvO1uYQ6zbCfgYvyI80M/P8QWh6KpXuZxX dZbiZacrGK46gnAEvGqrVzaLZlxepcsYgdkIx7cY2Pu4MBgeZwLSq9x+83EuxwC2/S WJLOqNPuUssMQwhkmAMZXyRoi9cKCyXdWuWW1rn1T3oONvX2Q8FKtyUaO35aJbeFWu lN+cyfaTya9Kp6gC5ACu2fbOhJgP7PRASkBJp42jx81uo9wc1Uf9c41y2orTHSOWRO SdkYXhyfRCXaIIOQOTkMg9CJGX7N0nz9xD3V1OoA68tqrAMKR9AdVO63kyriR9hDB7 cMHS0pLaC7LxA== From: Frederic Weisbecker To: LKML Cc: Frederic Weisbecker , =?UTF-8?q?Michal=20Koutn=C3=BD?= , Andrew Morton , Bjorn Helgaas , Catalin Marinas , Danilo Krummrich , "David S . Miller" , Eric Dumazet , Gabriele Monaco , Greg Kroah-Hartman , Ingo Molnar , Jakub Kicinski , Jens Axboe , Johannes Weiner , Lai Jiangshan , Marco Crivellari , Michal Hocko , Muchun Song , Paolo Abeni , Peter Zijlstra , Phil Auld , "Rafael J . Wysocki" , Roman Gushchin , Shakeel Butt , Simon Horman , Tejun Heo , Thomas Gleixner , Vlastimil Babka , Waiman Long , Will Deacon , cgroups@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-block@vger.kernel.org, linux-mm@kvack.org, linux-pci@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH 18/33] cpuset: Remove cpuset_cpu_is_isolated() Date: Mon, 13 Oct 2025 22:31:31 +0200 Message-ID: <20251013203146.10162-19-frederic@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251013203146.10162-1-frederic@kernel.org> References: <20251013203146.10162-1-frederic@kernel.org> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The set of cpuset isolated CPUs is now included in HK_TYPE_DOMAIN housekeeping cpumask. There is no usecase left interested in just checking what is isolated by cpuset and not by the isolcpus= kernel boot parameter. Signed-off-by: Frederic Weisbecker --- include/linux/cpuset.h | 6 ------ include/linux/sched/isolation.h | 3 +-- kernel/cgroup/cpuset.c | 12 ------------ 3 files changed, 1 insertion(+), 20 deletions(-) diff --git a/include/linux/cpuset.h b/include/linux/cpuset.h index 051d36fec578..a10775a4f702 100644 --- a/include/linux/cpuset.h +++ b/include/linux/cpuset.h @@ -78,7 +78,6 @@ extern void cpuset_lock(void); extern void cpuset_unlock(void); extern void cpuset_cpus_allowed(struct task_struct *p, struct cpumask *mask); extern bool cpuset_cpus_allowed_fallback(struct task_struct *p); -extern bool cpuset_cpu_is_isolated(int cpu); extern nodemask_t cpuset_mems_allowed(struct task_struct *p); #define cpuset_current_mems_allowed (current->mems_allowed) void cpuset_init_current_mems_allowed(void); @@ -208,11 +207,6 @@ static inline bool cpuset_cpus_allowed_fallback(struct task_struct *p) return false; } -static inline bool cpuset_cpu_is_isolated(int cpu) -{ - return false; -} - static inline nodemask_t cpuset_mems_allowed(struct task_struct *p) { return node_possible_map; diff --git a/include/linux/sched/isolation.h b/include/linux/sched/isolation.h index 94d5c835121b..0f50c152cf68 100644 --- a/include/linux/sched/isolation.h +++ b/include/linux/sched/isolation.h @@ -76,8 +76,7 @@ static inline bool housekeeping_cpu(int cpu, enum hk_type type) static inline bool cpu_is_isolated(int cpu) { return !housekeeping_test_cpu(cpu, HK_TYPE_DOMAIN) || - !housekeeping_test_cpu(cpu, HK_TYPE_TICK) || - cpuset_cpu_is_isolated(cpu); + !housekeeping_test_cpu(cpu, HK_TYPE_TICK); } #endif /* _LINUX_SCHED_ISOLATION_H */ diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c index ea102e4695a5..e19d3375a4ec 100644 --- a/kernel/cgroup/cpuset.c +++ b/kernel/cgroup/cpuset.c @@ -29,7 +29,6 @@ #include #include #include -#include #include #include #include @@ -1405,17 +1404,6 @@ static void update_housekeeping_cpumask(bool isolcpus_updated) WARN_ON_ONCE(ret < 0); } -/** - * cpuset_cpu_is_isolated - Check if the given CPU is isolated - * @cpu: the CPU number to be checked - * Return: true if CPU is used in an isolated partition, false otherwise - */ -bool cpuset_cpu_is_isolated(int cpu) -{ - return cpumask_test_cpu(cpu, isolated_cpus); -} -EXPORT_SYMBOL_GPL(cpuset_cpu_is_isolated); - /** * rm_siblings_excl_cpus - Remove exclusive CPUs that are used by sibling cpusets * @parent: Parent cpuset containing all siblings -- 2.51.0