scx_rescue_accrue(9)

📦 version 7.3.1, in nixpkgs unstable

💅 scx_rescue_accrue — the Kernel API Manual, bestie edition

okay so you're looking at scx_rescue_accrue(9) from the Kernel API Manual and honestly? it's giving "tiny function, big responsibilities." let's get into it 🎀

✨ NAME ✨

scx_rescue_accrue — accrue budget at the configured fraction of elapsed time. that's it, that's the whole job, and she does it flawlessly 💅

🌸 SYNOPSIS 🌸

void scx_rescue_accrue (struct rq *rq );

🦋 ARGUMENTS 🦋

  • rq — the rq of interest, aka the runqueue you're being nosy about 👀

💖 DESCRIPTION 💖

okay so picture this: a session spans from the first arrival until no rescuee is left — pending or admitted, like literally none, zero, gone 🫶

while a session is active, the cap is three quanta, and the balance is what drives escalation. (see scx_rescue_timerfn if you wanna know more about that whole situation — iykyk ✨)

but outside a session? the cap is just one quantum. so an idle gap funds the next arrival's admission, but it never, ever funds an escalation. no cap, no escalation, that's the rule periodt 💀

lowkey the whole vibe is: sessions get the fancy three-quantum budget, idle gaps get one quantum and only for admission. do not mix them up bestie, the math will not forgive you 😭

🧚 SEE ALSO 🧚

kernel file ./kernel/sched/ext/sub.c — and the whole friend group:

that's the whole page!! 🌈 shipped from ./kernel/sched/ext, dated October 2026, under the name scx_rescue_accrue(9) — go accrue that budget and slay, bestie 👑

📦 where this page comes from