module_param_cb(9)

✨ module_param_cb ✨

Okay so bestie, welcome to the Kernel API Manual — this is the page for module_param_cb(9), and honestly? It's giving main character energy for module/cmdline parameters. Let's get into it 💅

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🌸 NAME 🌸

module_param_cb — the general callback for a module/cmdline parameter. Like, the general one. The callback of all callbacks. Periodt 🫶

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🦋 SYNOPSIS 🦋

module_param_cb (name , ops , arg , perm );

That's the whole vibe. Four args, no cap.

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🎀 ARGUMENTS 🎀

• name — a valid C identifier which is the parameter name. Gotta be valid C, bestie, we're not out here inventing syntax 💀
• ops — the set & get operations for this parameter. Your getters and setters, the whole little operation duo ✨
• arg — args for ops. The stuff you're passing along to those operations, iykyk.
• perm — visibility in sysfs. How visible this parameter is in sysfs — your whole visibility moment 👑

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🔥 DESCRIPTION 🔥

The ops can have NULL set or get functions. That's it. That's the whole description. Lowkey iconic of them to keep it that short, ngl 😭

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🌈 SEE ALSO 🌈

• Kernel file ./include/linux/moduleparam.h
• module_param(9)
• module_param_unsafe(9)
• module_param_named(9)
• module_param_named_unsafe(9)
• core_param_cb(9)
• postcore_param_cb(9)
• arch_param_cb(9)
• subsys_param_cb(9)
• fs_param_cb(9)
• device_param_cb(9)
• late_param_cb(9)
• core_param(9)
• core_param_unsafe(9)
• __core_param_cb(9)
• module_param_string(9)
• parameq(9)
• parameqn(9)
• module_param_array(9)
• module_param_array_named(9)
• module_param_hw_named(9)
• module_param_hw_array(9)

Look at that whole friend group of parameter functions — obsessed, fr fr 💖

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And that's the page, bestie! This one lives in ./include/linux and it's dated October 2026. Go forth and register your parameters, slay style 🌸🧚💜