sched: add WF_CURRENT_CPU and externise ttwu

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Add WF_CURRENT_CPU wake flag that advices the scheduler to
move the wakee to the current CPU. This is useful for fast on-CPU
context switching use cases.

In addition, make ttwu external rather than static so that
the flag could be passed to it from outside of sched/core.c.

Signed-off-by: Peter Oskolkov <posk@google.com>
Signed-off-by: Andrei Vagin <avagin@google.com>
Acked-by: "Peter Zijlstra (Intel)" <peterz@infradead.org>
Link: https://lore.kernel.org/r/20230308073201.3102738-3-avagin@google.com
Signed-off-by: Kees Cook <keescook@chromium.org>

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Peter Oskolkov 2023-03-07 23:31:57 -08:00 • committed by Kees Cook

parent 4943b66df1

commit ab83f455f0

3 changed files with 13 additions and 7 deletions

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3

kernel/sched/core.c

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4

kernel/sched/fair.c

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13

kernel/sched/sched.h

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