arm_cpuidle_suspend(9)

💤 arm_cpuidle_suspend — bestie's guide to the Kernel API Manual

okay so like, real talk: this is the page for arm_cpuidle_suspend, straight out of the Kernel API Manual. it's the little function that yeets your ARM core into a low power idle state. she's small, she's simple, she's literally doing the most important job (saving battery) while looking like she's doing nothing. main character energy fr. 💅

---

✨ SYNOPSIS ✨

int arm_cpuidle_suspend (int index );

that's it. that's the whole vibe. one int in, one int out. 🎀

---

🌸 ARGUMENTS 🌸

• index — an integer, and it's doing double duty as an identifier for the low level PM callbacks. think of it like a lil name tag so the function knows which callback set to reach for. ngl it's giving "VIP wristband at the function" 🦋

---

💖 DESCRIPTION 💖

so here's the tea ☕ — this function calls the underlying arch specific low level PM code, the stuff that was registered at init time. she doesn't write the low power logic herself, she just calls up the arch-specific bestie who actually knows the vibes. delegation! we love to see it. 👑

and then she returns the result of the suspend callback. that's it. no cap. 🫶

---

🔥 SEE ALSO 🔥

• Kernel file ./arch/arm/kernel/cpuidle.c
• arm_cpuidle_simple_enter(9)
• arm_cpuidle_get_ops(9)
• arm_cpuidle_read_ops(9)
• arm_cpuidle_init(9)

(go read all of them, iykyk — they're the whole friend group and this one's just the one who shows up at the party 💜)

---

lowkey a reminder: she only does anything if the ops were registered at init time first. no registration, no callback, no nap. 😭

---

this iconic little page lives at ./arch/arm/kernel in the tree, dated October 2026, and yes — it's arm_cpuidle_suspend(9) in the Kernel API Manual, slay ✨💖🎀 bye bestie, go take a nap (responsibly, via the suspend callback) 🌈🦋