sched: Introduce sched_class::pick_task()

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Because sched_class::pick_next_task() also implies
sched_class::set_next_task() (and possibly put_prev_task() and
newidle_balance) it is not state invariant. This makes it unsuitable
for remote task selection.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
[Vineeth: folded fixes]
Signed-off-by: Vineeth Remanan Pillai <viremana@linux.microsoft.com>
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/20210422123308.437092775@infradead.org

...

This commit is contained in:

Peter Zijlstra 2020-11-17 18:19:32 -05:00

parent 875feb41fd

commit 21f56ffe44

6 changed files with 87 additions and 9 deletions

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16

kernel/sched/deadline.c

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40

kernel/sched/fair.c

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8

kernel/sched/idle.c

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15

kernel/sched/rt.c

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3

kernel/sched/sched.h

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14

kernel/sched/stop_task.c

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