sched_ext: Implement SCX_KICK_WAIT

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If set when calling scx_bpf_kick_cpu(), the invoking CPU will busy wait for
the kicked cpu to enter the scheduler. See the following for example usage:

  https://github.com/sched-ext/scx/blob/main/scheds/c/scx_pair.bpf.c

v2: - Updated to fit the updated kick_cpus_irq_workfn() implementation.

    - Include SCX_KICK_WAIT related information in debug dump.

Signed-off-by: David Vernet <dvernet@meta.com>
Reviewed-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Josh Don <joshdon@google.com>
Acked-by: Hao Luo <haoluo@google.com>
Acked-by: Barret Rhoden <brho@google.com>

...

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David Vernet 2024-06-18 10:09:20 -10:00 • committed by Tejun Heo

parent 36454023f5

commit 90e55164da

4 changed files with 85 additions and 7 deletions

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kernel/sched/core.c

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82

kernel/sched/ext.c

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4

kernel/sched/ext.h

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2

kernel/sched/sched.h

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