Bug 8001 - backport cluster scheduler wakeup optimization
Summary: backport cluster scheduler wakeup optimization
Status: NEW
Alias: None
Product: ANCK 6.6 Dev
Classification: ANCK
Component: generic (show other bugs) generic
Version: unspecified
Hardware: All Linux
: P3-Medium S3-normal
Target Milestone: ---
Assignee: maqiao
QA Contact: shuming
URL:
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Reported: 2024-01-22 09:57 UTC by AubreyLi
Modified: 2024-01-26 14:39 UTC (History)
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Description AubreyLi intel_group 2024-01-22 09:57:03 UTC 
Backport the follow-up work to support cluster scheduler. Previously
we have added cluster level in the scheduler for both ARM64[1] and
X86[2] to support load balance between clusters to bring more memory
bandwidth and decrease cache contention. This patchset, on the other
hand, takes care of wake-up path by giving CPUs within the same cluster
a try before scanning the whole LLC to benefit those tasks communicating
with each other.

Barry Song (2):
sched: Add cpus_share_resources API
sched/fair: Scan cluster before scanning LLC in wake-up path

Yicong Yang (1):
sched/fair: Use candidate prev/recent_used CPU if scanning failed for
cluster wakeup
Comment 1 小龙 admin 2024-01-26 14:39:51 UTC 
The PR Link: https://gitee.com/anolis/cloud-kernel/pulls/2678