scx_bpf_dsq_reenq(9)

🌸 NAME 🌸

okay so scx_bpf_dsq_reenq — re-enqueue tasks on a DSQ. This one is straight from the Kernel API Manual, and yes bestie, we are absolutely reading kernel API lore together. 💅✨

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✨ SYNOPSIS ✨

The whole call is exactly this, no cap:

__bpf_kfunc void scx_bpf_dsq_reenq (u64 dsq_id , u64 reenq_flags , const
       struct bpf_prog_aux *aux );

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🎀 ARGUMENTS 🎀

• dsq_id — the DSQ to re-enqueue. 🫶
• reenq_flags — the flags, typed as SCX_RENQ_*. ✨
• aux — implicit BPF argument to access bpf_prog_aux, hidden from BPF progs. iykyk 🙈

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🦋 DESCRIPTION 🦋

It iterates over all of the tasks currently enqueued on the DSQ identified by dsq_id, and re-enqueues them in the BPF scheduler. The following DSQs are supported:

• Local DSQs (SCX_DSQ_LOCAL or SCX_DSQ_LOCAL_ON | $cpu)
• User DSQs

Re-enqueues are performed asynchronously. Can be called from anywhere. periodt. 🔥

SCX_DSQ_LOCAL resolves to the local DSQ of the rq the current scheduler operation is locked to — e.g. the rq being dispatched for in ops.dispatch — or the calling CPU's when no rq is locked. that's the whole vibe check, bestie. 🦋

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👑 SEE ALSO 👑

Kernel file ./kernel/sched/ext/ext.c is the home base, and here's the whole friend group: 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_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_cidperf_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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Source/version: ./kernel/sched/ext · date: October 2026 · page: scx_bpf_dsq_reenq(9). mwah 💋 that's the whole manual, bestie — go re-enqueue something cute. 🎀🫶