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drivers/perf: hisi: Don't update the associated_cpus on CPU offline

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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 <yangyicong@hisilicon.com>
Link: https://lore.kernel.org/r/20241210141525.37788-3-yangyicong@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Yicong Yang 2024-12-10 22:15:17 +08:00 committed by Will Deacon
parent 41729809ac
commit f2368a209a
1 changed files with 0 additions and 3 deletions
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3
drivers/perf/hisilicon/hisi_uncore_pmu.c
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@ -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;