kfifo_alloc_node(9)

📦 version 7.3.1, in nixpkgs unstable

🌸 kfifo_alloc_node(9) 🌸

okay bestie, welcome to the Kernel API Manual 💖 this one's a kernel-space baddie, so grab your compiler and let's go ✨

✨ NAME ✨

kfifo_alloc_node — dynamically allocates a new fifo buffer on a NUMA node 🎀

🦋 SYNOPSIS 🦋

kfifo_alloc_node (fifo , size , gfp_mask , node );

That's the whole vibe check right there — four args, no cap 💅

👑 ARGUMENTS 👑

  • fifo — pointer to the fifo. literally just hand her the fifo and she'll do the rest 🫶
  • size — the number of elements in the fifo, and this must be a power of 2 ⚠️ (like, 2, 4, 8, 16… you get it, iykyk)
  • gfp_mask — get_free_pages mask, passed to kmalloc. this is the little permission slip she hands off to kmalloc 😌
  • node — NUMA node to allocate memory on. super picky about real estate, we love a girl with boundaries 💅

🌈 DESCRIPTION 🌈

So this macro dynamically allocates a new fifo buffer with NUMA node awareness. highkey iconic of her honestly 🌸

The number of elements will be rounded-up to a power of 2 — yes, even if you hand her something chaotic, she'll fix it for you ✨ (but the size arg still says it must be a power of 2, so don't push her 💀).

The fifo will be released with kfifo_free. that's the cleanup bestie, don't forget her 🧚

Return 0 if no error, otherwise an error code. so like — zero means slay, anything else means something went off 😭

🔥 SEE ALSO 🔥

Kernel file ./include/linux/kfifo.h — go read the source, it's giving main character energy 👑

✨ and that's the whole page, bestie ✨ this little gem lives in ./include/linux, dated October 2026, and she's officially kfifo_alloc_node(9) 🎀 go forth and allocate, ily 💜🦋

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