dev_pm_genp...next_hrtimer(9)

💖 dev_pm_genp...next_hrtimer(9) 💖

okay bestie, welcome to the Kernel API Manual — yes that's the manual name, we're fancy here — and today's main character is dev_pm_genp...next_hrtimer(9). buckle up, this one's a quick little baddie but she's important. ✨

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🌸 NAME 🌸

dev_pm_genpd_get_next_hrtimer — she returns the next_hrtimer for the genpd. that's it, that's the whole job, and she does it flawlessly. 💅

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🎀 SYNOPSIS 🎀

ktime_t dev_pm_genpd_get_next_hrtimer (struct device *dev );

literally just hand her a device and she hands you back a ktime_t. no cap. 🫶

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🦋 ARGUMENTS 🦋

• dev — a device that is attached to the genpd. that's the vibe check: it has to be attached, iykyk.

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✨ DESCRIPTION ✨

so here's the tea ☕ — this routine should typically be called for a device at the point of when a GENPD_NOTIFY_PRE_OFF notification has been sent for it. that's the moment. that's her window. don't be weird about it. 🕐

what she gives you back is the aggregated value of the genpd's next hrtimer, or KTIME_MAX if no valid value have been set. so if nothing's been set, you're not getting a cute little number, you're getting KTIME_MAX. periodt. 💀

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💜 SEE ALSO 💜

the kernel file herself: ./drivers/pmdomain/core.c 🧚

and now, the entire group chat — every single one of her mutuals, no one left on read:

• dev_pm_genpd_set_performance_state(9)
• dev_pm_genpd_set_next_wakeup(9)
• dev_pm_genpd_set_hwmode(9)
• dev_pm_genpd_get_hwmode(9)
• dev_pm_genpd_rpm_always_on(9)
• dev_pm_genpd_is_on(9)
• pm_genpd_inc_rejected(9)
• genpd_queue_power_off_work(9)
• genpd_power_off(9)
• genpd_power_on(9)
• genpd_power_off_work_fn(9)
• __genpd_runtime_suspend(9)
• __genpd_runtime_resume(9)
• genpd_runtime_suspend(9)
• genpd_runtime_resume(9)
• genpd_power_off_unused(9)
• genpd_sync_power_off(9)
• genpd_sync_power_on(9)
• genpd_prepare(9)
• genpd_finish_suspend(9)
• genpd_suspend_noirq(9)
• genpd_finish_resume(9)
• genpd_resume_noirq(9)
• genpd_freeze_noirq(9)
• genpd_thaw_noirq(9)
• genpd_poweroff_noirq(9)
• genpd_restore_noirq(9)
• genpd_complete(9)
• dev_pm_genpd_suspend(9)
• dev_pm_genpd_resume(9)
• pm_genpd_add_device(9)
• pm_genpd_remove_device(9)
• dev_pm_genpd_add_notifier(9)
• dev_pm_genpd_remove_notifier(9)
• pm_genpd_add_subdomain(9)
• pm_genpd_remove_subdomain(9)
• pm_genpd_init(9)
• pm_genpd_remove(9)
• struct of_genpd_provider(9)
• genpd_xlate_simple(9)
• genpd_xlate_onecell(9)
• genpd_add_provider(9)
• of_genpd_add_provider_simple(9)
• of_genpd_add_provider_onecell(9)
• of_genpd_del_provider(9)
• genpd_get_from_provider(9)
• of_genpd_add_child_ids(9)
• of_genpd_remove_child_ids(9)
• of_genpd_add_device(9)
• of_genpd_add_subdomain(9)
• of_genpd_remove_subdomain(9)
• of_genpd_remove_last(9)
• genpd_dev_pm_detach(9)
• genpd_dev_pm_attach(9)
• genpd_dev_pm_attach_by_id(9)
• genpd_dev_pm_attach_by_name(9)
• of_genpd_parse_idle_states(9)
• of_genpd_sync_state(9)

like, that is a whole friend group and they all live in the same directory. obsessed. 🔥

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okay that's the page, bestie! 💖 this iconic little slice of documentation is from the kernel source tree at ./drivers/pmdomain, dated October 2026, and we've got the manual name Kernel API Manual up top so you always know where you are. go forth, get that next_hrtimer, slay. 🌈👑💅