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 77A9C305E10; Thu, 1 Jan 2026 22:17:06 +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=1767305829; cv=none; b=XJCO3tMts5CrYGZjU+RH7eaWCaE1eWuQSgcMtRst7krh3Jlx5/DRh6Nln9PdBDIVEVGw5y+3YhUE2cTLHsvttLR8tCLZg7KlQwG0V0ZnbJOIkeh4A1pdExE5o6Jaxj66i8ToFreY+L6XtDhhOa2G4Go3IIiDAPUWCWh4Gux38po= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767305829; c=relaxed/simple; bh=MZh/70k9lOhqSg5WVM7HlPDgI+aR1XcYP1gqEcla7CM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=fAWSpMy757u/J3U4jR308Uj4tVKL2QjpOU6630occ8hoxEVP1x3L8XDLUrXonrCUvkl+ZVbhzMxry+MZNo13cTXlXlrU6mv9/0aD/lK3aNvthpYjJP8o02DoKl8MR+TL3slxIa6s9vUr8rcQKCFH04J6LIA0a/GQPhv6kmZBWJo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ZJLuCa3i; 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="ZJLuCa3i" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9211BC4CEF7; Thu, 1 Jan 2026 22:16:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1767305826; bh=MZh/70k9lOhqSg5WVM7HlPDgI+aR1XcYP1gqEcla7CM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZJLuCa3iG6Sm7iktwt0+ApaoTltF7T5PkNGYT+0FP+cENPGotvk+AtxV9gYfGxoRh FYbq6OQBiHVnSQG5nNAU0YiaAfhwF5/3MnrpsYLCnxojpjheLBAiqwStH81QUYHdxU QpWa/jJVwJAJswYmswDQWTt2J83Doun9lTzIbCxG8voxdXKjRZqTSyWamEjR/gAGoX APgwNFXFMvnndf4ZCm/g3oTfWdIkJ1NSL9gGsqGDP0ElfG70njnTdR88WFR1+jKsPv 73vkg+OOaDpu4dw9cDanjVgYrwdaQjwrdcCXTitveYJo3cHiOsWXE4POuBaBb5mXgm rWMcFaLv1toEw== From: Frederic Weisbecker To: LKML Cc: Frederic Weisbecker , =?UTF-8?q?Michal=20Koutn=C3=BD?= , Andrew Morton , Bjorn Helgaas , Catalin Marinas , Chen Ridong , 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 21/33] cpuset: Remove cpuset_cpu_is_isolated() Date: Thu, 1 Jan 2026 23:13:46 +0100 Message-ID: <20260101221359.22298-22-frederic@kernel.org> X-Mailer: git-send-email 2.51.1 In-Reply-To: <20260101221359.22298-1-frederic@kernel.org> References: <20260101221359.22298-1-frederic@kernel.org> Precedence: bulk X-Mailing-List: netdev@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 Reviewed-by: Waiman Long --- 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 1c49ffd2ca9b..a4aa2f1767d0 100644 --- a/include/linux/cpuset.h +++ b/include/linux/cpuset.h @@ -79,7 +79,6 @@ extern void cpuset_unlock(void); extern void cpuset_cpus_allowed_locked(struct task_struct *p, struct cpumask *mask); 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); @@ -215,11 +214,6 @@ 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 d8d9baf44516..d0fb0f647318 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 12a47922b7ce..de693acc9254 100644 --- a/kernel/cgroup/cpuset.c +++ b/kernel/cgroup/cpuset.c @@ -29,7 +29,6 @@ #include #include #include -#include #include #include #include @@ -1490,17 +1489,6 @@ static void update_isolation_cpumasks(void) isolated_cpus_updating = false; } -/** - * 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 -- 2.51.1