Messages in this thread | | | From | Dietmar Eggemann <> | Subject | Re: [PATCH v2 3/9] sched: Remove checks against SD_LOAD_BALANCE | Date | Thu, 19 Mar 2020 11:28:37 +0100 |
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On 11.03.20 19:15, Valentin Schneider wrote: > Potential users of that flag could have been cpusets and isolcpus. > > cpusets don't need it because they define exclusive (i.e. non-overlapping) > domain spans, see cpuset.cpu_exclusive and cpuset.sched_load_balance. > If such a cpuset contains a single CPU, it will have the NULL domain > attached to it. If it contains several CPUs, none of their domains will > extend beyond the span of the cpuset.
There are also non-exclusive cpusets but I assume the statement is the same.
CPUs which are only used in cpusets with cpuset.sched_load_balance=0 are attached to the NULL sched-domain.
There seems to be no code which alters the SD_LOAD_BALANCE flag.
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