devm_kvasprintf(9)

📦 version 7.3.1, in nixpkgs unstable

💅 devm_kvasprintf — the kernel page, but make it cute

okay so bestie, this is devm_kvasprintf(9) from the Kernel API Manual, and it's honestly giving "allocated but make it managed" ✨ Devres girlies rise up 🎀

✨ NAME ✨

devm_kvasprintf — Allocate resource managed space and format a string into that. fr fr that's the whole job 🫶

🌸 SYNOPSIS 🌸

char * devm_kvasprintf (struct device *dev , gfp_t gfp , const char *fmt
, va_list ap );

copy it exactly bestie, don't get creative with the punctuation, the compiler is watching 👀

💖 ARGUMENTS 💖

  • dev — Device to allocate memory for. yes it's for the device, the device is the main character here 👑
  • gfp — the GFP mask used in the devm_kmalloc call when allocating memory 🧚 lowkey important, these flags are the vibe check for your alloc
  • fmt — The printf-style format string. you know how printf works, don't act like you don't 💅
  • ap — Arguments for the format string. it's a va_list, so it's the spread of args, iykyk 🍓

⭐ RETURN ⭐

Pointer to allocated string on success, NULL on failure 😭 that's it, that's the return. no cap.

ngl bestie, always check for NULL. failure is real and it will humble you 💀

🦋 SEE ALSO 🦋

okay this list is LONG but it's all the devres besties and I refuse to drop a single one 🙈 the kernel file is ./drivers/base/devres.c and here's the whole squad:

like, that's the entire friend group 🫶 go read them too, they ate 💅

aaaaand that's the page!! 💜 it lives under ./drivers/base, dated October 2026, and this whole thing was served up in the Kernel API Manual. stan devres, stay allocated, drink water 🌈⭐💖

📦 where this page comes from