sched: Add core wide task selection and scheduling

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Instead of only selecting a local task, select a task for all SMT
siblings for every reschedule on the core (irrespective which logical
CPU does the reschedule).

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Don Hiatt <dhiatt@digitalocean.com>
Tested-by: Hongyu Ning <hongyu.ning@linux.intel.com>
Tested-by: Vincent Guittot <vincent.guittot@linaro.org>
Link: https://lkml.kernel.org/r/20210422123308.557559654@infradead.org

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Peter Zijlstra 2020-11-17 18:19:37 -05:00

parent 8a311c740b

commit 539f65125d

2 changed files with 305 additions and 2 deletions

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301

kernel/sched/core.c

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6

kernel/sched/sched.h

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