scx_bpf_cidperf_cur(9)

💅 scx_bpf_cidperf_cur — man page, but make it make sense

okay so bestie, we're in section 9 of the Kernel API Manual, and today's main character is scx_bpf_cidperf_cur. yeah. that name. say it three times fast, i dare you 🫶

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✨ NAME ✨

scx_bpf_cidperf_cur — literally just: query the current performance of the CPU at @cid. that's the whole vibe check 💅

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🌸 SYNOPSIS 🌸

__bpf_kfunc u32 scx_bpf_cidperf_cur (s32 cid , const struct bpf_prog_aux
*aux );

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🎀 ARGUMENTS 🎀

• cid — the cid of the CPU you wanna query. like, which CPU, but in cid-speak, iykyk 🦋
• aux — an implicit BPF argument that gives you access to bpf_prog_aux, and it's hidden from BPF progs. so it's there, you just don't see it. mysterious. iconic. 🙈

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💖 DESCRIPTION 💖

it's the cid-addressed equivalent of scx_bpf_cpuperf_cur. that's it. that's the whole description. sometimes the truth is short and slays 🔥

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⭐ SEE ALSO ⭐

buckle up bestie, this list is LONG and honestly it ate 👑

coming at you from the kernel file ./kernel/sched/ext/ext.c:

scx_is_descendant(9), rq_is_open(9), scx_fill_cmask_scratch(9), scx_call_op_set_cpumask(9), nldsq_next_task(9), nldsq_cursor_next_task(9), nldsq_cursor_lost_task(9), scx_task_iter_start(9), scx_task_iter_unlock(9), scx_task_iter_relock(9), scx_task_iter_stop(9), scx_task_iter_next(9), scx_task_iter_next_locked(9), scx_dump_event(9), wait_ops_state(9), scx_cpu_valid(9), schedule_deferred(9), schedule_deferred_locked(9), dsq_insert_head(9), set_task_slice_keep_oob(9), scx_task_slice_ended(9), move_remote_task_to_local_dsq(9), unlink_dsq_and_switch_rq_lock(9), move_task_between_dsqs(9), dispatch_to_local_dsq(9), finish_dispatch(9), scx_prio_less(9), __scx_init_task(9), task_dead_and_done(9), scx_tg_sched(9), scx_tg_knob_sched(9), handle_lockup(9), scx_rcu_cpu_stall(9), scx_softlockup(9), scx_hardlockup(9), unbypass_renotify_idle(9), scx_bypass(9), scx_propagate_exit_irq_workfn(9), scx_flush_disable_work(9), print_scx_info(9), scx_bpf_dsq_insert___v2(9), __scx_bpf_dsq_insert_vtime(9), scx_bpf_dispatch_nr_slots(9), scx_bpf_dispatch_cancel(9), scx_bpf_dsq_move_to_local___v2(9), scx_bpf_dsq_move_set_slice(9), scx_bpf_dsq_move_set_vtime(9), scx_bpf_dsq_move(9), scx_bpf_dsq_move_vtime(9), scx_bpf_reenqueue_local(9), scx_bpf_create_dsq(9), scx_bpf_task_set_slice(9), scx_bpf_task_set_dsq_vtime(9), scx_bpf_kick_cpu(9), scx_bpf_kick_cid(9), scx_bpf_dsq_nr_queued(9), scx_bpf_destroy_dsq(9), bpf_iter_scx_dsq_new(9), bpf_iter_scx_dsq_next(9), bpf_iter_scx_dsq_destroy(9), scx_bpf_dsq_peek(9), scx_bpf_dsq_reenq(9), scx_bpf_reenqueue_local___v2(9), scx_bpf_exit_bstr(9), scx_bpf_error_bstr(9), scx_bpf_dump_bstr(9), scx_bpf_cpuperf_cap(9), scx_bpf_cidperf_cap(9), scx_bpf_cpuperf_cur(9), scx_bpf_cpuperf_set(9), scx_bpf_cidperf_set(9), scx_bpf_nr_node_ids(9), scx_bpf_nr_cpu_ids(9), scx_bpf_nr_cids(9), scx_bpf_nr_online_cids(9), scx_bpf_online_cmask(9), scx_bpf_this_cid(9), scx_bpf_get_possible_cpumask(9), scx_bpf_get_online_cpumask(9), scx_bpf_put_cpumask(9), scx_bpf_task_running(9), scx_bpf_task_cpu(9), scx_bpf_task_cid(9), scx_bpf_locked_rq(9), scx_bpf_cpu_curr(9), scx_bpf_cid_curr(9), scx_bpf_tid_to_task(9), scx_bpf_now(9), scx_bpf_events(9), scx_bpf_task_cgroup(9).

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ngl, that's a lot of cross-references. read them all or don't, i'm not your mom 💀 but they're right there if you need them.

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🌈 cute lil sign-off 🌈

this page lives in the source ./kernel/sched/ext, dated October 2026, and it's chilling in section 9 — so when you cite it, it's scx_bpf_cidperf_cur(9), periodt 💜✨ go query those CPUs bestie, you got this 🧚🍓