amd_hfi_online(9)

📦 version 7.3.1, in nixpkgs unstable

okay bestie, welcome to amd_hfi_online(9) from the Kernel API Manual — this is the page where we enable workload classification on a CPU, and yes, the group chat is hyped 💖.

🌸 NAME 🌸

amd_hfi_online — Enable workload classification on @cpu. That’s the whole assignment, and it ate ✨.

✨ SYNOPSIS ✨

int amd_hfi_online (unsigned int cpu );

🎀 ARGUMENTS 🎀

  • cpu — the CPU in which the workload classification will be enabled. Like, that’s the specific CPU getting the glow-up 💅.

🔥 RETURN 🔥

0 on success, negative error code on failure. No cap: success is literally 0, failure is a negative error code 😭.

🦋 SEE ALSO 🦋

  • Kernel file ./drivers/platform/x86/amd/hfi/hfi.c
  • struct amd_shmem_info(9)
  • struct amd_hfi_classes(9)
  • struct amd_hfi_cpuinfo(9)
  • amd_hfi_offline(9)

These are the linked besties — go click around, iykyk 👑.

Cute sign-off: source/version ./drivers/platform/x86/amd/hfi, dated October 2026, and the page is still amd_hfi_online(9) 💅🫶.

📦 where this page comes from