From f2368a209a713267b68f7a4906a5012a29925410 Mon Sep 17 00:00:00 2001 From: Yicong Yang Date: Tue, 10 Dec 2024 22:15:17 +0800 Subject: [PATCH] drivers/perf: hisi: Don't update the associated_cpus on CPU offline Event will be scheduled on CPU of hisi_pmu::on_cpu which is selected from the intersection of hisi_pmu::associated_cpus and online CPUs. So the associated_cpus don't need to be maintained with online CPUs. This will save one update operation if one associated CPU is offlined. Signed-off-by: Yicong Yang Link: https://lore.kernel.org/r/20241210141525.37788-3-yangyicong@huawei.com Signed-off-by: Will Deacon --- drivers/perf/hisilicon/hisi_uncore_pmu.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/perf/hisilicon/hisi_uncore_pmu.c b/drivers/perf/hisilicon/hisi_uncore_pmu.c index 749d33625980..8c404f8b3f39 100644 --- a/drivers/perf/hisilicon/hisi_uncore_pmu.c +++ b/drivers/perf/hisilicon/hisi_uncore_pmu.c @@ -492,9 +492,6 @@ int hisi_uncore_pmu_offline_cpu(unsigned int cpu, struct hlist_node *node) node); unsigned int target; - if (!cpumask_test_and_clear_cpu(cpu, &hisi_pmu->associated_cpus)) - return 0; - /* Nothing to do if this CPU doesn't own the PMU */ if (hisi_pmu->on_cpu != cpu) return 0; -- 2.25.1