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 3565134CFD7; Wed, 5 Nov 2025 21:06:24 +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=1762376785; cv=none; b=CKTucnQ2SwL9X/ydI5nnpBgtVMzIss04WwG7f3SJ24GbhXPe/9hYrSF8s0OWr14GLUfVtgXEOpbmXFgDats8ZJTVrMUXW/GZlFcHDT3HgTXA41RAfzWvbef/JCZJfRYGVj4ch1zgxY4ibpRjCphAxvBpJi1R8aEOPMZxwSAXp+U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762376785; c=relaxed/simple; bh=1PXFAoSc5EaQ1yzCGftJTnGf1OCO/kq+1cRjiff+B0o=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=edAW0JZIif02YosnmUkKsDks2FAJbzbKPezYBF/Z8BbRQrcTvlwPeDoobV7Rd9A5auHx7afqtfSPoc3uiG1XXX7Jjio+gTJsngLl+XYq8gyhx1q6M7M/gfWfBR3qLGDb2XGaKq6MNKGNa7DF5MdwSAFJPcCjsmD2KYSi2I7M/C8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=rA4n9pw2; 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="rA4n9pw2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3A479C116D0; Wed, 5 Nov 2025 21:06:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1762376784; bh=1PXFAoSc5EaQ1yzCGftJTnGf1OCO/kq+1cRjiff+B0o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rA4n9pw2FOv+9hxUmMxi6GGt4SJ3mYCQWb06W9IiZHm52r67O+JOAmfjrIMDYzNSR 7hhMjSR+V0LaaEHgGb4EMGkqcbc7bh4k157CK1CGKnWGgH60SQaTfVEcf14bx2R1a7 W6AmRByimN4vv61qfnqKvrVtt84nUxX+ewRIrIERljtsHj4WPpzYQzQ3ro10IQ6UaJ i2NEpKm2VX4EY/sin6yFQF7A7VLkFpIueTpaU6/WWugVABg+bzYoul5wol8HkxJPqI 0HmF/ZV2mQzCZGdW4X6JtSqcQOvv8qs5gwBPd8rNVz7Y8l7f4Pvcd6F+y4NHWaQkyb mwjWG2dqzoj+Q== 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 18/31] cpuset: Remove cpuset_cpu_is_isolated() Date: Wed, 5 Nov 2025 22:03:34 +0100 Message-ID: <20251105210348.35256-19-frederic@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251105210348.35256-1-frederic@kernel.org> References: <20251105210348.35256-1-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 | 4 +--- kernel/cgroup/cpuset.c | 12 ------------ 3 files changed, 1 insertion(+), 21 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 aaf2a672f8dc..a127629adb32 100644 --- a/include/linux/sched/isolation.h +++ b/include/linux/sched/isolation.h @@ -2,7 +2,6 @@ #define _LINUX_SCHED_ISOLATION_H #include -#include #include #include @@ -84,8 +83,7 @@ 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