link_css_set(9)

📦 version 7.3.1, in nixpkgs unstable

Okay so real quick, this one's a kernel API manual page (link_css_set(9)) and it's doing one very specific little job, and honestly? It ate. Let's get into it 🫶

✨ NAME ✨

link_css_set — a helper function to link a css_set to a cgroup

Yes that's literally it, that's the whole vibe. A helper. A little guy. The supporting cast member with main character energy 👑

🌸 SYNOPSIS 🌸

void link_css_set (struct list_head *tmp_links , struct css_set *cset ,
struct cgroup *cgrp );

Note the return type: void. She does the work and she does not report back. Iconic, unbothered, no return value 💅

🎀 ARGUMENTS 🎀

Three args, three besties, let's meet them:

  • tmp_links — cgrp_cset_link objects allocated by allocate_cgrp_cset_links. Like, they're already made, bestie, you just gotta hand them over 😌
  • cset — the css_set to be linked. This is the one getting linked, she's the moment.
  • cgrp — the destination cgroup. The place she's going. The destination, the final boss, the location 📍
Ngl, the whole thing is "link the css_set to the cgroup" and the arguments are just who's holding the pre-allocated links, who's being linked, and where. Fr fr that's the plot 🍓

🦋 SEE ALSO 🦋

Bestie. Sit down. This list is long and I'm not skipping a single one because every single one matters 💖 (also they're all in the kernel file ./kernel/cgroup/cgroup.c, iykyk):

Like… that's the whole cgroup cinematic universe right there 😭🔥 Go read them, they're all in ./kernel/cgroup/cgroup.c and they all understood the assignment.

💖 that's the page, bestie 💖

Source: ./kernel/cgroup, dated October 2026, page link_css_set(9). Slay, go link some css_sets to some cgroups, and remember: tmp_links should already be allocated, no cap 🌈⭐

📦 where this page comes from