rcu_cpu_stall_reset(9)

✨ rcu_cpu_stall_reset(9) ✨

okay so first things first bestie — this is a page from the Kernel API Manual, and the whole entire vibe is rcu_cpu_stall_reset. that's it. that's the function. she's a little reset button and she's iconic for it 💅

---

🌸 NAME 🌸

rcu_cpu_stall_reset — restart the stall-warning timeout for the current grace period 🫶

like literally just restart the clock on the stall warning. no cap.

---

🎀 SYNOPSIS 🎀

void rcu_cpu_stall_reset (void );

that's the whole signature. she takes nothing, she gives everything ✨

---

🦋 ARGUMENTS 🦋

• void — no arguments. none. zero. void. the function said "i don't need anything from you" and honestly? main character energy 👑

---

💖 DESCRIPTION 💖

so here's the tea ☕ — when the caller makes a reset request, this thing disables stall detection until 3 fqs loops have passed. three whole loops. and why, you ask? because it's required to make sure a fresh jiffies is loaded. that's the whole point, iykyk 🌈

and ngl, it should be safe to do this from the fqs loop, since by that point enough timer interrupts and context switches should have passed. like, that's the assumption. the vibes are correct. ✅

⚠️ but listen — the caller must disable hard irqs. not optional. not a suggestion. do it. fr fr 💀

---

🌟 SEE ALSO 🌟

• Kernel file ./kernel/rcu/tree_stall.h 🍓
• rcu_stall_chain_notifier_register(9)
• rcu_stall_chain_notifier_unregister(9)

go read those too, bestie, they're literally right there 🧚

---

and that's the page!! mwah 💋 this lil gem lives in ./kernel/rcu, dated October 2026, and it's from the Kernel API Manual obvi. stan the stall reset. periodt 💅✨