cxl_region_update_bandwidth(9)

📦 version 7.3.1, in nixpkgs unstable

🌸 cxl_region_update_bandwidth(9) 🌸

okay so you've stumbled into the cxl_region_update_bandwidth(9) page, and yes bestie, it's from the Kernel API Manual — we're in kernel-doc territory now, but I promise it's a short one and it's giving "quick little function with a big job" energy. 💅

✨ NAME ✨

cxl_region_update_bandwidth — update the bandwidth access coordinates of a region 🎀

That's it, that's the whole thing. It updates the access coordinates for bandwidth on a region. Slay.

🦋 SYNOPSIS 🦋

void cxl_region_update_bandwidth (struct cxl_region *cxlr , struct
       xarray *input_xa );

So it returns void (no return value, no exit status, no comeback tour — it just does the thing), takes a struct cxl_region * and a struct xarray *. Periodt. ✨

💖 ARGUMENTS 💖

  • cxlr — the region being operated on 🌈 — like, this is the region we're doing the operation to, that's the vibe.
  • input_xa — an xarray that holds cxl_perf_ctx with calculated bandwidth per ACPI0017 instance 🦋 — so the xarray is carrying the performance context structs, and each one's got the bandwidth math already done for its ACPI0017 instance. It comes pre-calculated, we're just receiving it, iykyk.

👑 SEE ALSO 👑

Kernel file: ./drivers/cxl/core/cdat.c 🍓 — that's where the friend lives.

And these little icons, go say hi to them too: 💜

like, the whole bandwidth-collecting friend group. gather, combine, update. the pipeline is pipeline-ing. 🌸

💀 real talk though: this page lists no return values, no errors, no environment variables, no flags, and no examples — so we're not making any up. What's here is what's here, and what's here is a void function, two arguments, and a very good supporting cast in SEE ALSO. no cap. 🙈

okay bestie, that's the whole page, you ate that reading it. 🧚 this little beauty came from the source dir ./drivers/cxl/core and it's dated October 2026 — so mark your calendar, screenshot the page, tell your group chat, and I'll see you at the next cxl_region_update_bandwidth(9) 💅✨🫶

📦 where this page comes from