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sched_ext: Add scx_bpf_events() and scx_read_event() for BPF schedulers

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scx_bpf_events() is added to the header files so the BPF scheduler
can use it. Also, scx_read_event() is added to read an event type in a
compatible way.

Signed-off-by: Changwoo Min <changwoo@igalia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Changwoo Min 2025-02-04 14:20:55 +09:00 committed by Tejun Heo
parent d46457c31c
commit 9865f31d85
1 changed files with 4 additions and 0 deletions
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4
tools/sched_ext/include/scx/common.bpf.h
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@ -78,6 +78,10 @@ struct rq *scx_bpf_cpu_rq(s32 cpu) __ksym;
struct cgroup *scx_bpf_task_cgroup(struct task_struct *p) __ksym __weak;
u64 scx_bpf_now(void) __ksym __weak;
void scx_bpf_events(struct scx_event_stats *events, size_t events__sz) __ksym __weak;
#define scx_read_event(e, name) \
(bpf_core_field_exists((e)->name) ? (e)->name : 0)
/*
* Use the following as @it__iter when calling scx_bpf_dsq_move[_vtime]() from
* within bpf_for_each() loops.