wakeup_source_not_usable(9)

💅 wakeup_source_not_usable(9) — the kernel API manual, bestie edition 🎀

okay so we're in the Kernel API Manual, section 9, and today's main character is wakeup_source_not_usable. yes the name is a little ominous. no she's not mean, she's just doing a vibe check on your wakeup source, that's literally it. 🦋

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✨ NAME ✨

wakeup_source_not_usable — validate the given wakeup source.

like, does this wakeup source pass inspection or not. that's the whole job. periodt. 💅

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🌸 SYNOPSIS 🌸

bool wakeup_source_not_usable (struct wakeup_source *ws );

she returns a bool and takes exactly one thing: a struct wakeup_source *ws. keep that signature exactly as-is, no cap, she's picky about her types. ✨

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🧚 ARGUMENTS 🧚

• ws — the wakeup source to be validated. hand her the pointer and she'll tell you what's up. 🫶

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👑 SEE ALSO 👑

bestie the wakeup-source universe is huge and she is connected to literally everyone, so buckle up. this is the whole friend group, in order, no skips:

• wakeup_source_create(9)
• wakeup_source_destroy(9)
• wakeup_source_add(9)
• wakeup_source_remove(9)
• wakeup_source_register(9)
• wakeup_source_unregister(9)
• wakeup_sources_read_lock(9)
• wakeup_sources_read_unlock(9)
• wakeup_sources_walk_start(9)
• wakeup_sources_walk_next(9)
• device_wakeup_attach(9)
• device_wakeup_enable(9)
• device_wakeup_attach_irq(9)
• device_wakeup_detach_irq(9)
• device_wakeup_arm_wake_irqs(9)
• device_wakeup_disarm_wake_irqs(9)
• device_wakeup_detach(9)
• device_wakeup_disable(9)
• device_set_wakeup_capable(9)
• device_set_wakeup_enable(9)
• wakeup_source_activate(9)
• wakeup_source_report_event(9)
• __pm_stay_awake(9)
• pm_stay_awake(9)
• wakeup_source_deactivate(9)
• __pm_relax(9)
• pm_relax(9)
• pm_wakeup_timer_fn(9)
• pm_wakeup_ws_event(9)
• pm_wakeup_dev_event(9)
• pm_wakeup_pending(9)
• pm_get_wakeup_count(9)
• pm_save_wakeup_count(9)
• pm_wakep_autosleep_enabled(9)
• print_wakeup_source_stats(9)
• wakeup_sources_stats_seq_show(9)
• bpf_wakeup_sources_read_lock(9)
• bpf_wakeup_sources_read_unlock(9)
• bpf_wakeup_sources_get_head(9)

and where does all this lore live? kernel file ./drivers/base/power/wakeup.c, obviously. that's the source of truth, iykyk. 🔥

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ngl the pm_wakep_autosleep_enabled(9) one is spelled exactly like that in the original — i'm not fixing it, i'm just reporting it. 💀 copy it exactly if you're typing it into anything.

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okay that's the whole page, short and iconic, she ate and left no crumbs 💖 the page lives under ./drivers/base/power and the version stamp says October 2026 — so like, future-core of her 🌈 bye bestie, go validate some wakeup sources 🧚‍♀️⭐