devl_param_value_changed(9)

💅 devl_param_value_changed — a Kernel API Manual moment

okay so bestie, welcome to the Kernel API Manual entry for devl_param_value_changed — yes that's the whole name, she's long but she's iconic 🎀

✨ NAME ✨

devl_param_value_changed — notify devlink that a parameter's value changed.

The driver should call this right after the change happens. Like, immediately. Don't be weird about it 🫶

✨ SYNOPSIS ✨

void devl_param_value_changed (struct devlink *devlink , u32 param_id );

✨ ARGUMENTS ✨

• devlink — the devlink. that's it, that's the whole description, she said what she said 💅
• param_id — the parameter ID 🌸

✨ DESCRIPTION ✨

So the driver uses this function to notify devlink that a value changed — with one big exception: this is not for driverinit configuration mode. Not her lane, not her vibe 🙈

For driverinit configuration mode, the driver should use the function

and yeah, the sentence just ends there in the original. no name, no closing punctuation, she simply walked off mid-sentence 💀 that's canon, we're keeping it.

✨ SEE ALSO ✨

Kernel file ./net/devlink/param.c plus the whole friend group:

• devl_params_register(9)
• devl_params_unregister(9)
• devl_param_driverinit_value_get(9)
• devl_param_driverinit_value_set(9)

and that's the page, bestie ✨ source path ./net/devlink, dated October 2026 — go forth and notify responsibly, mwah 💖🦋