device_param_cb(9)

✨ device_param_cb(9) ✨

okay so bestie, this is the device_param_cb page from the Kernel API Manual 💖 and it is literally the general callback for a module/cmdline parameter to be evaluated before device initcall level. no cap. 🎀

🌸 SYNOPSIS 🌸

device_param_cb (name , ops , arg , perm );

🦋 ARGUMENTS 🦋

• name — a valid C identifier which is the parameter name. yes bestie, valid C identifier, we are not doing chaos here 💅
• ops — the set & get operations for this parameter.
• arg — args for ops. that's the whole vibe.
• perm — visibility in sysfs. slay. ✨

💜 DESCRIPTION 💜

The ops can have NULL set or get functions. that's it, that's the description, iykyk 🫶

🔥 SEE ALSO 🔥

Kernel file ./include/linux/moduleparam.h — plus the whole squad: module_param(9), module_param_unsafe(9), module_param_named(9), module_param_named_unsafe(9), module_param_cb(9), core_param_cb(9), postcore_param_cb(9), arch_param_cb(9), subsys_param_cb(9), fs_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).

signed off from source/version ./include/linux, dated October 2026 — device_param_cb(9) out 💋👑