module_param_hw_array(9)

📦 version 7.3.1, in nixpkgs unstable

🌸 module_param_hw_array(9) 🌸

okay so bestie, this one lives in the Kernel API Manual — welcome to the kernel-param corner of the group chat, it's giving very niche but very iconic 💅

✨ NAME ✨

module_param_hw_array — it's literally a parameter that represents an array of hw parameters. no cap, that's the whole vibe 🎀

🦋 SYNOPSIS 🦋

module_param_hw_array (name , type , hwtype , nump , perm );

that's the shape of it, periodt ✨

💖 ARGUMENTS 💖

  • name — the name of the array variable, bestie. it's name. iconic behavior, honestly 🫶
  • type — the type, as per module_param — so whatever rules apply over there apply here too, iykyk
  • hwtype — what the value actually represents (enum hwparam_type) 👑
  • nump — an optional pointer that gets filled in with the number written. optional!! so don't stress if you don't need it 🌸
  • perm — visibility in sysfs — this is the little window where everyone can peek at your param 👀

⭐ DESCRIPTION ⭐

so the tea is: input and output are as comma-separated values 🍓

but — and listen, this is the important part — commas inside values don't work properly 😭 like, for real. eg. an array of charp. so keep your commas strictly business, no commas inside the commas, fr fr.

also! ARRAY_SIZE(name) is used to determine the number of elements in the array — which means the definition must be visible. no hiding it, bestie, she needs to see it to count it 💀

🔥 SEE ALSO 🔥

the whole friend group, gathered for you, in a single kernel file — ./include/linux/moduleparam.h 🧚

ok that's the entire list, nobody gets left out in this household 💜

and that's the page!! mwah 💋 this one ships with the kernel docs out of ./include/linux, from the October 2026 edition of the Kernel API Manual — go off and register your hw param arrays, bestie, you're gonna slay 🎀✨🦋

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