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sched_ext: Add scx_sched back pointer to scx_sched_pcpu

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Add a back pointer from scx_sched_pcpu to scx_sched. This will be used by
the next patch to make scx_bpf_reenqueue_local() sub-sched aware.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Andrea Righi <arighi@nvidia.com>
This commit is contained in:
Tejun Heo 2026-03-06 07:58:04 -10:00
parent 337ec00b1d
commit 7f5fcd47dd
2 changed files with 6 additions and 0 deletions
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3
kernel/sched/ext.c
View File

@ -5655,6 +5655,9 @@ static struct scx_sched *scx_alloc_and_add_sched(struct sched_ext_ops *ops,
for_each_possible_cpu(cpu)
init_dsq(bypass_dsq(sch, cpu), SCX_DSQ_BYPASS, sch);
for_each_possible_cpu(cpu)
per_cpu_ptr(sch->pcpu, cpu)->sch = sch;
sch->helper = kthread_run_worker(0, "sched_ext_helper");
if (IS_ERR(sch->helper)) {
ret = PTR_ERR(sch->helper);

3
kernel/sched/ext_internal.h
View File

@ -933,6 +933,8 @@ struct scx_event_stats {
s64 SCX_EV_SUB_BYPASS_DISPATCH;
};
struct scx_sched;
enum scx_sched_pcpu_flags {
SCX_SCHED_PCPU_BYPASSING = 1LLU << 0,
};
@ -953,6 +955,7 @@ struct scx_dsp_ctx {
};
struct scx_sched_pcpu {
struct scx_sched *sch;
u64 flags; /* protected by rq lock */
/*