tsc_refine_calibration_work(9)

💖 NAME 💖

tsc_refine_calibration_work — the little delayed-work glow-up that further refines your TSC freq calibration ✨

Welcome to the Kernel API Manual, bestie. This is the page for tsc_refine_calibration_work(9), and yes, it's giving “we're gonna calibrate the TSC freq again, but make it timed.” 🎀

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🌸 SYNOPSIS 🌸

void tsc_refine_calibration_work (struct work_struct *work );

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🦋 ARGUMENTS 🦋

• work — ignored. That's it. That's the whole vibe. It's a struct work_struct *work, and this function literally does not look at it. 🙈

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✨ DESCRIPTION ✨

Okay so here's the tea, bestie: this function uses delayed work over a period of a second to further refine the TSC freq value. One whole second of delayed-work behavior — timer girl summer. ⏳💅

And because this is timer based instead of loop based, we don't block the boot process while this longer calibration is done. No boot-blocking drama, no waiting around in a spin loop. The boot process gets to keep moving. 🏃‍♀️💨

Now for the “don't come for me” part: if there are any calibration anomalies (too many SMIs, etc), or the refined calibration is off by 1% of the fast early calibration, we throw out the new calibration and use the early calibration. Yep — the refined result gets yeeted, and the early calibration stays main character. 🗑️👑 The 1% threshold and the “too many SMIs, etc” clause are real, so don't forget them.

Lowkey important: this is about throwing out the new calibration, not trying to smoosh it together with the early one. If it's anomalous or off by that 1%, the early calibration wins. Periodt. 💀

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🌈 SEE ALSO 🌈

• Kernel file ./arch/x86/kernel/tsc.c
• native_calibrate_tsc(9)
• native_calibrate_cpu_early(9)
• native_calibrate_cpu(9)

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Signed, sealed, and sent with kernel-file fairy dust from ./arch/x86/kernel — dated October 2026, page tsc_refine_calibration_work(9), manual section 9 energy. 🧚💜🫶