snd_pcm_lib_...free_for_all(9)

📦 version 7.3.1, in nixpkgs unstable

💖 snd_pcm_lib_...free_for_all(9) 💖

okay so bestie, welcome to the Kernel API Manual ✨ — yes this is a real manpage from the kernel source tree and yes the name has literal ... in it, that's not me being lazy, that's the actual title, iykyk 🫶

🌸 NAME 🌸

snd_pcm_lib_preallocate_free_for_all — release all pre-allocated buffers on the pcm 💅

like. ALL of them. every last one. gone. freed. bye 👋

✨ SYNOPSIS ✨

void snd_pcm_lib_preallocate_free_for_all (struct snd_pcm *pcm );

no cap, that's the whole signature — it returns void, so don't go looking for an error code, she gives you nothing back 🎀

🦋 ARGUMENTS 🦋

  • pcm — the pcm instance 🌈 (the one you're cleaning up, bestie, the main character of this function)

💜 DESCRIPTION 💜

Releases all the pre-allocated buffers on the given pcm. that's it. that's the vibe. it's giving spring cleaning for audio drivers 🧹✨

you hand it a pcm and it lets go of every buffer that was pre-allocated on that instance — iconic, lowkey, does exactly what it says on the tin 🔥

👑 SEE ALSO 👑

Kernel file ./sound/core/pcm_memory.c — that's where she lives 🏠💖

and her whole friend group:

ngl, read those SEE ALSO entries before you start freeing stuff — memory in the kernel does not forgive and does not forget 💀 seriously, be careful with your frees.

alright bestie, that's the page 🎀 this one came outta ./sound/core and it's dated October 2026 — so yeah, future-core, obsessed ⭐ go free those buffers responsibly, mwah 💋🦋

📦 where this page comes from