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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: Wed, 24 Dec 2025 14:45:08 +0100 Message-ID: <20251224134520.33231-22-frederic@kernel.org> X-Mailer: git-send-email 2.51.1 In-Reply-To: <20251224134520.33231-1-frederic@kernel.org> References: <20251224134520.33231-1-frederic@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 0F0661C0004 X-Stat-Signature: 1cbr5h594y166wfh1y5pyw17x6a7s766 X-HE-Tag: 1766584111-85694 X-HE-Meta: U2FsdGVkX1+DVVCh8v1NwlIdUw4acUkeXZHqfWfa/sHCTYzMD9B3Ufx7ciUFBVwxtj58oJk/Lvx+CABdPzelEfHQXxDkQl0/JonDUCa3NXzCDkafECyPkB2/wDCo2nAOGCNh7Nk4RLXnS81clI1Yi4eq21iUXTcuN1bkEOhGTmA6LS3aYrkTFQj3Ji6RW9pTxuMQ26oqkyiNohfylUB7ofK82W+wvzPtOuMSoEXp7JRvuoWkUqo4fwepHtZvNseBWKwg48pF9J3IeVxmczh+j4PhZ/kF4SRpTJkBXG3iex+u4d+lSe2AqOt0GYeV9g3pxNNyvhFkZVTkhS2jkrBRC7osu4mUEngNUZYltSsBXeRXgnxgAVfVz4SisLyXBXDx4kyFTdYesKuFR9ro/wdl4k47bWiLLRJVj5pcIw/qM1s+wRcGtIMd3Xm2e2O/DvOECUbqh2r4CeGcFhd1r4lXPqqJcXwpMaU+pREPj+SLOcvOpaN0AMhrfsiaD0vWkXLPMwhMLUPntjzG0GFIufXouG1+zwJdvl2PTWzFosTUQ7uzvS+6o+4llZ0bTx9xFA+M4XrelJ+Qai4jUsWMOJc2Q1Rrhy5rqYSPhFpt55iyH2bJBu9uZYbbK7QAXdr8qHLiPE5sG+1Zb8Yhdi0C7OWmXOX2sNJYVo32nTuHtKL6Op+j0Zi0F3HeGSGNWkHgo3EuPWQW2jvzKdgJHQDt3q1I8hsAbqIjaYeSwtPGF6lLJC3xHOE0OtA9XK7TFQjrb1FhctxMqstNedyZ7B2jwzgsAXW5c9M6vz9IzUh+pM7xooVruPGYmpTuIr/n+SOfnmoOA7vx9Svu11lR/Oze8s521HkjxTKj3kQF6E89Ayckeg3gBje3cBcoFwd8vbeKaWWXeW4a5HnwCh36M7QEKl3dnlBl8UdhX4uCcclXInZYxhaoEyD7GT+CJmRnIhgrb+3LXzDBxTexRU64ru/jnvR 3dILaU82 8vGxMgdeYPFrUl+cr4uKLKacFssTsP2dtT8nC8bqP8qaKMHmI9udMP3Kpv8hq8Lio5ZCpTfnkM040gR5oXBEbBBWmmobfLuAghCTBFDnhwR9KwoOvHual0yOnLJFPQAeIJJ9ZLRgjOX2sLNRMcSskChNWE9Onymr0aNK+lL2uhmNLGQjB67UWZ2WedYjoxb5Av5uIGHHX2xYd5Jzt5z7DplGs7a6lnDcdaN5iu09liafnNlyyGmJWP7dLPaY431MdTmGXP7hxA+RLWqt/IkfmSEyJF3P3FzxlalYTqd2+zu5lGPo8HApu71WcnlBklGUnsqM8y2UIYmajT6lVUuOIbjucU7EdSJxTadi4uI7T7mNniQw= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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 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 6842a1ba4d13..19905adbb705 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 25ac6c98113c..cd6119c02beb 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