gpstate_timer_handler(9)

💅 gpstate_timer_handler(9) — like, the kernel API manual bestie ✨

okay so real talk, this one lives in the Kernel API Manual and it's literally called gpstate_timer_handler. that's the whole name section. somebody left the description after the dash blank and honestly? iconic of them. no notes. 🫶

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🌸 NAME 🌸

gpstate_timer_handler — and that's it, that's the name, the dash is just sitting there empty like a read receipt 🙈

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✨ SYNOPSIS ✨

void gpstate_timer_handler (struct timer_list *t );

that's the whole signature, no cap. it returns void, so don't go looking for a return value, it's not coming 💀

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🎀 ARGUMENTS 🎀

• t — the timer context, bestie, and what it does is fetch the global pstate info struct. that's literally its job, it's the key to the whole vibe check 🔑

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🦋 DESCRIPTION 🦋

okay so here's the tea ☕ — this handler brings the global pstate down closer to the local pstate following a quadratic equation. yes, actual math, we're doing quadratics in the kernel, slay 📐✨

and it does not just do it once and dip, no ma'am. it queues a new timer if the global pstate is still not equal to the local pstate. so it keeps pulling up until they match, like a group chat that will not rest until everyone's on the same page fr fr 🔁💖

ngl this is a convergence situation — the pstates are either equal, or the timer gets re-armed. those are the two moods 💅

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🌈 SEE ALSO 🌈

• the kernel file ./drivers/cpufreq/powernv-cpufreq.c — that's where the source lives, go read it, it's giving main character energy 👑
• struct global_pstate_info(9)
• struct pstate_idx_revmap_data(9)
• calc_global_pstate(9)

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and that's the whole page babes 💜 ./drivers/cpufreq, dated October 2026, page gpstate_timer_handler(9) — mwah, go forth and converge those pstates 🧚‍♀️🎀