Commit ceff622c authored by Barry Song's avatar Barry Song Committed by Jie Liu
Browse files

sched: Add cpus_share_resources API

mainline inclusion
from mainline-v6.7-rc1
commit b95303e0aeaf446b65169dd4142cacdaeb7d4c8b
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I8E8NN
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b95303e0aeaf446b65169dd4142cacdaeb7d4c8b



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Add cpus_share_resources() API. This is the preparation for the
optimization of select_idle_cpu() on platforms with cluster scheduler
level.

On a machine with clusters cpus_share_resources() will test whether
two cpus are within the same cluster. On a non-cluster machine it
will behaves the same as cpus_share_cache(). So we use "resources"
here for cache resources.

Signed-off-by: default avatarBarry Song <song.bao.hua@hisilicon.com>
Signed-off-by: default avatarYicong Yang <yangyicong@hisilicon.com>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: default avatarGautham R. Shenoy <gautham.shenoy@amd.com>
Reviewed-by: default avatarTim Chen <tim.c.chen@linux.intel.com>
Reviewed-by: default avatarVincent Guittot <vincent.guittot@linaro.org>
Tested-and-reviewed-by: default avatarChen Yu <yu.c.chen@intel.com>
Tested-by: default avatarK Prateek Nayak <kprateek.nayak@amd.com>
Link: https://lkml.kernel.org/r/20231019033323.54147-2-yangyicong@huawei.com


Signed-off-by: default avatarJie Liu <liujie375@h-partners.com>
parent 727ea34d
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