__clk_recalc_rates(9)

📦 version 7.3.1, in nixpkgs unstable

💖 __clk_recalc_rates(9) — Kernel API Manual 💖

okay so bestie, welcome to the Kernel API Manual page for __clk_recalc_rates(9) — yes, the double-underscore girlie is the main character here. We’re about to walk a clk subtree and recalculate rates, and honestly? She ate. ✨

✨ NAME ✨

__clk_recalc_rates — recalculate all rates in the clk subtree 💅

🌸 SYNOPSIS 🌸

void __clk_recalc_rates (struct clk_core *core , bool update_req ,
       unsigned long msg );

🎀 ARGUMENTS 🎀

  • core — the first clk in the subtree, aka where this whole little walk begins. 🫶
  • update_req — tells you whether req_rate should be updated with the new rate. no cap, that’s the whole vibe check for this one.
  • msg — the notification type (see include/linux/clk.h). iconic little enum-adjacent moment. ✨

🦋 DESCRIPTION 🦋

So __clk_recalc_rates walks the subtree of clks starting with core and recalculates rates as it goes. Literally just strolling through the clk subtree, doing rate math, being useful. 💅

🎀 Important note, bestie: if a clk does not implement the .recalc_rate callback then it is assumed that the clock will take on the rate of its parent. That’s the rule, periodt.

__clk_recalc_rates also propagates the POST_RATE_CHANGE notification, if necessary. So yes, she’s not just recalculating — she’s also handling the notification business when it’s needed. 🔥

💅 SEE ALSO 💅

Kernel file ./drivers/clk/clk.c and struct clk_core(9) — plus the whole bestie group chat of clk-related references:

🫶 that’s the whole page, bestie — brought to you by the source/version ./drivers/clk, dated October 2026, and still serving __clk_recalc_rates(9) energy at the very end. 💖✨
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