sched_ext: Move bypass state into scx_sched

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In preparation of multiple scheduler support, make bypass state
per-scx_sched. Move scx_bypass_depth, bypass_timestamp and bypass_lb_timer
from globals into scx_sched. Move SCX_RQ_BYPASSING from rq to scx_sched_pcpu
as SCX_SCHED_PCPU_BYPASSING.

scx_bypass() now takes @sch and scx_rq_bypassing(rq) is replaced with
scx_bypassing(sch, cpu). All callers updated.

scx_bypassed_for_enable existed to balance the global scx_bypass_depth when
enable failed. Now that bypass_depth is per-scheduler, the counter is
destroyed along with the scheduler on enable failure. Remove
scx_bypassed_for_enable.

As all tasks currently use the root scheduler, there's no observable behavior
change.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Andrea Righi <arighi@nvidia.com>

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This commit is contained in:

Tejun Heo 2026-03-06 07:58:03 -10:00

parent ff06f727a9

commit 5c8d98a1b4

4 changed files with 80 additions and 81 deletions

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143

kernel/sched/ext.c

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3

kernel/sched/ext_idle.c

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14

kernel/sched/ext_internal.h

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1

kernel/sched/sched.h

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