[PATCH 1/2] perf/arm-cmn: Clean up unnecessary NUMA_NO_NODE check

From: Robin Murphy
Date: Wed Sep 04 2024 - 14:42:33 EST


Checking for NUMA_NO_NODE is a misleading and, on reflection, entirely
unnecessary micro-optimisation. If it ever did happen that an incoming
CPU has no NUMA affinity while the current CPU does, a questionably-
useful PMU migration isn't the biggest thing wrong with that picture...

Signed-off-by: Robin Murphy <robin.murphy@xxxxxxx>
---

Just a couple more little tweaks here, paying back some co-development
from the NI driver.

drivers/perf/arm-cmn.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/perf/arm-cmn.c b/drivers/perf/arm-cmn.c
index 0266ff041e0b..62d4782da7e4 100644
--- a/drivers/perf/arm-cmn.c
+++ b/drivers/perf/arm-cmn.c
@@ -2023,7 +2023,7 @@ static int arm_cmn_pmu_online_cpu(unsigned int cpu, struct hlist_node *cpuhp_nod

cmn = hlist_entry_safe(cpuhp_node, struct arm_cmn, cpuhp_node);
node = dev_to_node(cmn->dev);
- if (node != NUMA_NO_NODE && cpu_to_node(cmn->cpu) != node && cpu_to_node(cpu) == node)
+ if (cpu_to_node(cmn->cpu) != node && cpu_to_node(cpu) == node)
arm_cmn_migrate(cmn, cpu);
return 0;
}
--
2.39.2.101.g768bb238c484.dirty