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Sat, 06 Dec 2025 19:30:40 -0800 (PST) Received: from localhost ([2601:346:0:79bd:7387:2d57:6cc5:314a]) by smtp.gmail.com with ESMTPSA id 956f58d0204a3-6443f5bca99sm3649703d50.24.2025.12.06.19.30.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 06 Dec 2025 19:30:39 -0800 (PST) From: "Yury Norov (NVIDIA)" To: Ingo Molnar , Peter Zijlstra , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Valentin Schneider , linux-kernel@vger.kernel.org Cc: "Yury Norov (NVIDIA)" , K Prateek Nayak , Phil Auld Subject: [PATCH RESEND] sched/fair: simplify task_numa_find_cpu() Date: Sat, 6 Dec 2025 22:30:36 -0500 Message-ID: <20251207033037.399608-1-yury.norov@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Use for_each_cpu_and() and drop some housekeeping code. Reviewed-by: K Prateek Nayak Reviewed-by: Phil Auld Signed-off-by: Yury Norov (NVIDIA) --- Rebased and re-tested on top of master. Original patch: https://lore.kernel.org/all/20250911203136.548844-1-yury.norov@gmail.com/ kernel/sched/fair.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index da46c3164537..3ead55e4b8a5 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -2458,11 +2458,8 @@ static void task_numa_find_cpu(struct task_numa_env = *env, maymove =3D !load_too_imbalanced(src_load, dst_load, env); } =20 - for_each_cpu(cpu, cpumask_of_node(env->dst_nid)) { - /* Skip this CPU if the source task cannot migrate */ - if (!cpumask_test_cpu(cpu, env->p->cpus_ptr)) - continue; - + /* Skip CPUs if the source task cannot migrate */ + for_each_cpu_and(cpu, cpumask_of_node(env->dst_nid), env->p->cpus_ptr) { env->dst_cpu =3D cpu; if (task_numa_compare(env, taskimp, groupimp, maymove)) break; --=20 2.43.0