wakeup_sources_read_lock(9)

💅 wakeup_sources_read_lock — Kernel API Manual, bestie edition 🎀

okay so hi, you're looking at the page for wakeup_sources_read_lock from the Kernel API Manual, and honestly? it's a short one. tiny icon. small but mighty. let's get into it 🦋

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✨ NAME ✨

wakeup_sources_read_lock — lock the wakeup source list for reading, bestie. that's the whole vibe. 💅

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✨ SYNOPSIS ✨

int wakeup_sources_read_lock (void );

literally that's it. no notes. 👑

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✨ ARGUMENTS ✨

• void — no arguments. none. zero. the void is empty, it's giving minimalist main character energy 🫶

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✨ DESCRIPTION ✨

so what it actually does: it returns an index of srcu lock for struct wakeup_srcu. that's the deliverable. an index. a little number. a golden ticket 🎫✨

and the important part — this index must be passed to the matching wakeup_sources_read_unlock. like, this is a matching set, okay? you take the index from here, you hand it to the unlock. they're a duo. a package deal. fr fr do not lose the index and do not unlock with somebody else's index, that's not the vibe 😭

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✨ SEE ALSO ✨

the kernel file lives at ./drivers/base/power/wakeup.c, and here's the whole friend group 🫶:

• 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_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_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)

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that's the whole page, no cap 💖 this one's coming at you from ./drivers/base/power, dated October 2026 — mwah, go lock your lists responsibly, ily, bye 🧚⭐