sched/fair: Do not compute NUMA Balancing stats unnecessarily during lb

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Aggregate nr_numa_running and nr_preferred_running when load balancing
at NUMA domains only. While at it, also move the aggregation below the
idle_cpu() check since an idle CPU cannot have any preferred tasks.

Signed-off-by: K Prateek Nayak <kprateek.nayak@amd.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Shrikanth Hegde <sshegde@linux.ibm.com>
Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org>
Link: https://lore.kernel.org/r/20241223043407.1611-7-kprateek.nayak@amd.com

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K Prateek Nayak 2024-12-23 04:34:05 +00:00 • committed by Peter Zijlstra

parent e1bc026465

commit 0ac1ee9ebf

1 changed files with 9 additions and 6 deletions

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kernel/sched/fair.c

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