__pm_relax(9)

💖 __pm_relax — the "okay bestie, we're done here" call 💖

So this is __pm_relax from the Kernel API Manual, section 9 — it's a kernel function, and honestly? It's the chill one. Let me tell you about it 🫶

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✨ NAME ✨

__pm_relax — the function that tells the PM core "okay, the wakeup event is handled, processing has ended, we can all breathe now" 💅

No cap, that's literally its whole job: notify the PM core that processing of a wakeup event has ended.

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🎀 SYNOPSIS 🎀

void __pm_relax (struct wakeup_source *ws );

Void return, one pointer in, no drama. Periodt. ✨

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🌸 ARGUMENTS 🌸

• ws — the wakeup source object that's associated with the source of the event. Like, which thing woke us up. That's the one you hand over 🦋

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🦋 DESCRIPTION 🦋

Okay so the vibe: you call this function for wakeup events whose processing started with a call to __pm_stay_awake. It's the matching end-of-story call — you stayed awake for this event, now you're relaxing the grip on it. Iconic pairing, honestly 🌈

And the best part? It is safe to call it from interrupt context 🔥 Like, yes, go ahead, do it from an IRQ handler, it's fine, it's built for that. Main character energy for real.

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⭐ SEE ALSO ⭐

Everything below lives in the kernel file ./drivers/base/power/wakeup.c — go read the source, bestie, it's giving lore 👑

• 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_not_usable(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_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)

Side note: yeah, pm_wakep_autosleep_enabled(9) really has that p in it in the list — we don't fix typos here, we report them with love 💀

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💜 Sign-off 💜

That's the whole page, bestie — short and sweet, from the ./drivers/base/power corner of the kernel world, in the October 2026 edition of the Kernel API Manual. Slay, go relax a wakeup source 🎀✨🧚