grab_runnable_context(9)

💅 grab_runnable_context(9) — the kernel API manual, bestie edition 🎀

Okay so bestie, welcome to the <pink>grab_runnable_context</pink> page from the Kernel API Manual — this is a <cyan>section 9</cyan> situation, aka kernel developer vibes only, so grab a strawberry drink and let's get into it 🍓✨

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🌸 NAME 🌸

grab_runnable_context — literally just trying to find a runnable context, that's the whole assignment 💅

✨ SYNOPSIS ✨

struct spu_context * grab_runnable_context (int prio , int node );

Yep, that's the signature, character for character, no edits no notes, we keep it <hotpink>exactly</hotpink> as it is 🫶

🦋 ARGUMENTS 🦋

Okay so about the arguments, and I'm gonna be so real with you:

• prio — <purple>-- undescribed --</purple> 😭 the page doesn't say. Not my fault, not your fault, it's just how the docs are. Moving on.
• node — <purple>-- undescribed --</purple> 🙈 same situation. Zero description. Iconic behaviour honestly.

Not me having to tell you two arguments are undescribed and just... living with that 💀 That's the manpage, bestie, I don't make the rules.

👑 DESCRIPTION 👑

So what does it do? Here's the tea ☕:

It removes the highest priority context on the runqueue and returns it right back to the caller — like, here you go, take it 👑✨

And if there's no runnable context to be found? It returns NULL. Periodt. That's the entire vibe check — nothing runnable means <hotpink>NULL</hotpink>, no cap 🫡

🌈 SEE ALSO 🌈

The whole friend group, all linked up, and yes you need every single one, iykyk:

• Kernel file ./arch/powerpc/platforms/cell/spufs/sched.c — the source of truth 📁
• spu_bind_context(9)
• spu_unbind_context(9)
• find_victim(9) 💀 (the name!!)
• spu_unschedule(9)
• spu_activate(9)
• spu_deactivate(9)
• spu_yield(9)
• count_active_contexts(9)
• spu_calc_load(9)

Go read all of them, bestie, they're all main character energy in their own way 🌟

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🧚 Cute little sign-off 🧚

This page came from <pink>./arch/powerpc/platforms/cell/...</pink> and it's dated <cyan>October 2026</cyan> — so like, future vibes fr fr 🦋 and it's the grab_runnable_context(9) page in case you forgot already (I got you 🫶). Byeee, go read find_victim(9) next, it's giving suspense 🔥👑