llc_count_cores(9)

📦 version 7.3.1, in nixpkgs unstable

💅 llc_count_cores — the llc_count_cores(9) page, bestie edition 🎀

okay so real talk: this is from the Kernel API Manual, section 9 (that's the kernel-API chapter, iykyk). It's short, it's sweet, and it's literally just about counting cores. Let's go. ✨

🌸 NAME 🌸

llc_count_cores — count the distinct cores (aka SMT groups) chillin' inside one LLC pod 🫶

⭐ SYNOPSIS ⭐

int llc_count_cores (const struct cpumask *pod_cpus , struct wq_pod_type
*smt_pods );

💖 ARGUMENTS 💖

  • pod_cpus — the cpumask of all the CPUs hanging out in the LLC pod. this is your guest list 🎀
  • smt_pods — the SMT pod type, and the whole point of it is to identify the sibling groups. so like, who's related to who 💫

🦋 DESCRIPTION 🦋

okay so here's the vibe: a core is represented by the lowest-numbered CPU in its SMT group. that's the representative, the main character of the group, no cap 👑

The function returns the number of distinct cores it found in pod_cpus. that's it. that's the whole job. she's simple, she's effective, and she ate 💅

🌈 SEE ALSO 🌈

okay this list is LONG long. like, ./kernel/workqueue.c really said "here's everybody" 😭 but every single one is below because we don't skip entries in this house 💜

like I said. everybody. 😭💀

🧚 the sign-off 🧚

this page lives in the ./kernel source tree, and she was stamped October 2026. so if you're reading her in the future: hi, you're iconic, hope your pods are balanced 💖🌷

okay bye bestie, go count some cores ✨👑

📦 where this page comes from