pm_clk_notify(9)

📦 version 7.3.1, in nixpkgs unstable

💅 pm_clk_notify — the manual page (Kernel API Manual, bestie edition) 💅

okay so welcome to pm_clk_notify(9), the notifier routine for when devices get added or removed, and honestly she's lowkey the glue holding the clock situation together. let's get into it 🫶

✨ NAME ✨

pm_clk_notify — Notify routine for device addition and removal. that's it, that's the vibe ✨

🌸 SYNOPSIS 🌸

int pm_clk_notify (struct notifier_block *nb , unsigned long action ,
       void *data );

🎀 ARGUMENTS 🎀

  • nb — the notifier block object that this function is literally a member of. she knows her family 👑
  • action — whatever operation the caller is out here carrying out. main character behaviour fr fr
  • data — the device this routine is being run for. yes bestie, that device 💖

🦋 DESCRIPTION 🦋

okay so for this function to actually work — and we do want her to work — nb must be a member of an object of type struct pm_clk_notifier_block that's containing all of the requisite data. no shortcuts, no vibes-only setup 🫶

specifically?? the con_ids member of that object is the one doing the heavy lifting — it's used to enable or disable the device's clocks, depending on action. so action comes in, con_ids handles the clock enable/disable situation accordingly, and the whole thing just works. iconic, honestly 💅

🔥 SEE ALSO 🔥

Kernel file ./drivers/base/power/clock_ops.c — that's where she lives 🏠

the whole friend group, all of them slay ⭐

and that's the page!! 🌈 this lil cutie comes from <purple>./drivers/base/power</purple> and is dated <mint>October 2026</mint>, and yes she's still showing up as pm_clk_notify(9) in the index — periodt 💅💖✨

📦 where this page comes from