pm_wakeup_ws_event(9)

💖 NAME 💖

Okay so this is pm_wakeup_ws_event(9), straight out of the Kernel API Manual — and bestie, it’s literally the function that notifies the PM core of a wakeup event. ✨ pm_wakeup_ws_event — notify the PM core of a wakeup event. No cap. 💅

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✨ SYNOPSIS ✨

void pm_wakeup_ws_event (struct wakeup_source *ws , unsigned int msec , bool hard );

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🎀 ARGUMENTS 🎀

• ws — the wakeup source object associated with the event source. 🦋
• msec — anticipated event processing time, in milliseconds. ⏱️
• hard — if it’s set, it aborts suspends in progress and wakes up from suspend-to-idle. 💥

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🌸 DESCRIPTION 🌸

Okay so picture this: you’re notifying the PM core of a wakeup event whose source is ws, and that event is gonna take approximately msec milliseconds to be processed by the kernel. 🫶

If ws is not active, it activates it. If msec is nonzero, it sets up the ws’ timer to execute pm_wakeup_timer_fn in the future. ⭐

And yes bestie, it is safe to call this function from interrupt context. 💜

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🔥 SEE ALSO 🔥

Kernel file ./drivers/base/power/wakeup.c and the whole crew:

• 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_relax(9)
• pm_wakeup_timer_fn(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)

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Catch you later, bestie — source/version: ./drivers/base/power, date: October 2026. 💅✨