devm_counter_alloc(9)

📦 version 7.3.1, in nixpkgs unstable

💅 devm_counter_alloc(9)

okay so this is a page from the Kernel API Manual and honestly? it's a little one but she's important. bestie, let's get into it 🎀

✨ NAME ✨

devm_counter_alloc — allocate a counter_device 🦋

like, that's her whole job. that's the assignment.

🌸 SYNOPSIS 🌸

struct counter_device * devm_counter_alloc (struct device *dev , size_t
sizeof_priv );

so she takes two things and she hands you back a struct counter_device *. iconic behavior fr fr 💖

🎀 ARGUMENTS 🎀

  • dev — the device to register the release callback for. yeah, that's the whole vibe: she needs to know which device she's tagging along with so the cleanup knows where to happen 🫶
  • sizeof_priv — size of the driver private data. just tell her how much room your private data needs and she's got you 💅

⭐ DESCRIPTION ⭐

hiii so this is the device managed version of counter_add. no cap, that's the tea ☕

what that means practically: she registers a cleanup callback to care for calling counter_put. so you don't have to remember to do it yourself — she's your main character bestie who handles the follow-up so you can just live your life 🌈✨

👑 SEE ALSO 👑

Kernel file ./drivers/counter/counter-core.c, plus these lovely little cross-references, go read them, iykyk:

and that's the page!! mwah 💋 sign-off time: this one lives under ./drivers/counter, dated October 2026, and it's literally devm_counter_alloc(9) — go off, bestie 🧚💜

📦 where this page comes from