cpu_cluster_pm_exit(9)

💖 NAME 💖

cpu_cluster_pm_exit — CPU cluster low power exit notifier. This is the cpu_cluster_pm_exit(9) page from the Kernel API Manual, bestie 💅✨

✨ SYNOPSIS ✨

int cpu_cluster_pm_exit (void );

🌸 ARGUMENTS 🌸

• void — no arguments, bestie. That's it. Nothing to pass, zero drama 🫶

🦋 DESCRIPTION 🦋

Okay so picture this: all the cpus in a power domain are exiting form a low power state, and that state may have caused some blocks in the same power domain to reset. cpu_cluster_pm_exit is the notifier that tells all the listeners, “hey bestie, we're exiting form a low power state” — yes, form is literally how the source spells it, don't come for me 😭💀

Timing is the whole vibe here. You must call this after cpu_cluster_pm_enter has been called for the power domain, and before cpu_pm_exit has been called on any cpu in the power domain. No cap, order matters 🔥👑

Who's listening? The notified drivers can include the VFP co-processor, the interrupt controller and its PM extensions, and local CPU timers context save/restore — and that save/restore stuff shouldn't be interrupted. Hence, it must be called with interrupts disabled. Periodt 💅

Return conditions are the same as __raw_notifier_call_chain.

🎀 SEE ALSO 🎀

• Kernel file ./kernel/cpu_pm.c
• cpu_pm_register_notifier(9)
• cpu_pm_unregister_notifier(9)
• cpu_pm_enter(9)
• cpu_pm_exit(9)
• cpu_cluster_pm_enter(9)

Cute sign-off: that's the whole page, brought to you by the ./kernel source and dated October 2026 — cpu_cluster_pm_exit(9), slaying in the Kernel API Manual 💖✨🎀