cpuhp_ap_sync_alive(9)

🦋 cpuhp_ap_sync_alive 💅

okay so this is the kernel API manual page for cpuhp_ap_sync_alive(9) — yes that's the section 9 girlies, kernel API, we love her 💖

---

✨ NAME ✨

cpuhp_ap_sync_alive — synchronize the AP with the control CPU once it is alive 🫶

---

🌸 SYNOPSIS 🌸

void cpuhp_ap_sync_alive (void );

that's it. that's the whole call. no cap ✨

---

🎀 ARGUMENTS 🎀

• void — no arguments 💀 literally none, she takes nothing, she needs nothing, main character energy fr

---

🔥 DESCRIPTION 🔥

okay so bestie, here's the vibe: this function updates the AP synchronization state to SYNC_STATE_ALIVE 👑 and then it waits for the BP to release it.

that's it. that's the whole plot. she flips the state to alive, then she sits there politely waiting for the BP to let her go. iconic behavior honestly 🌈

lowkey a whole "i'm here, now notice me" moment 💅

---

⭐ SEE ALSO ⭐

like all the siblings and cousins, go check them out:

• Kernel file ./kernel/cpu.c
• struct cpuhp_cpu_state(9)
• struct cpuhp_step(9)
• cpuhp_invoke_callback(9)
• cpuhp_ap_update_sync_state(9)
• cpuhp_ap_report_dead(9)
• clear_tasks_mm_cpumask(9)
• cpu_device_down(9)
• notify_cpu_starting(9)
• cpu_device_up(9)
• bringup_hibernate_cpu(9)
• __cpuhp_setup_state_cpuslocked(9)
• __cpuhp_remove_state_cpuslocked(9)

---

and that's the page bestie!! 🍓 this one lives in ./kernel, October 2026 edition, brought to you by the cpuhp_ap_sync_alive(9) girlies 🧚💜 go forth and sync those APs, mwah 😭💖