diff mbox series

[v5,02/10] drivers/perf: hisi: Don't update the associated_cpus on CPU offline

Message ID 20241210141525.37788-3-yangyicong@huawei.com (mailing list archive)
State New
Headers show
Series Refactor the common parts to the HiSilicon Uncore PMU core and cleanups | expand

Commit Message

Yicong Yang Dec. 10, 2024, 2:15 p.m. UTC 
From: Yicong Yang <yangyicong@hisilicon.com>

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>
---
 drivers/perf/hisilicon/hisi_uncore_pmu.c | 3 ---
 1 file changed, 3 deletions(-)
diff mbox series

Patch

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;