pcpu_free_vm_areas(9)

📦 version 7.3.1, in nixpkgs unstable

💅 pcpu_free_vm_areas — like, the Kernel API Manual page (section 9, bestie) 🎀

okay so quick vibe check: this is pcpu_free_vm_areas(9) from the Kernel API Manual, and she is the cleanup queen 👑. Think of her as the friend who comes over after the party and takes the recycling out — nobody throws her a parade, but without her you'd be drowning in vm_structs. no cap.

✨ NAME ✨

pcpu_free_vm_areas — frees the vmalloc areas for the percpu allocator 🧹💖

like, that's the whole job. she's the deallocator. the "you're welcome" at the end of the story.

🌸 SYNOPSIS 🌸

void pcpu_free_vm_areas (struct vm_struct **vms , int nr_vms );

the way that signature is just... so simple. two args. no return value. she doesn't even need to text you back, she just does it 💅

🦋 ARGUMENTS 🦋

  • vms — a vm_struct pointer array, and it has to be the one that pcpu_get_vm_areas gave you. like, this is not a "bring your own pointer" situation bestie 🙈 she needs her own receipts back.
  • nr_vms — the number of allocated areas. exactly how many. count them. periodt 🔥

⭐ DESCRIPTION ⭐

okay so here's the tea: this function frees the vm_structs and the array that was allocated by pcpu_get_vm_areas. both. the structs and the array. not me being obsessed with a function that actually cleans up after itself 😭🫶

it's giving "responsible main character energy." she frees everything her sibling pcpu_get_vm_areas allocated, and honestly? iconic.

ngl, this is a pairing thing — if you didn't get those vms from pcpu_get_vm_areas, you are not the target audience for this function. read the room 💀

🌈 SEE ALSO 🌈

here come the mutuals — all of them, fr fr. the whole ./mm/vmalloc.c kernel file family reunion 🎀:

like I said. the whole friend group 💖

and that's the page, bestie! this lil transmission came from the ./mm corner of the kernel, dated October 2026 — so go free those areas, hydrate, and remember: cleanup is a love language 🫶✨💜

📦 where this page comes from