do_disable_cpu_turbo(9)

💅 do_disable_cpu_turbo(9) 💅

okay so this is a page straight out of the Kernel API Manual, and honestly? it's a tiny little icon and i'm obsessed. it's called do_disable_cpu_turbo and it is, bestie, exactly what it sounds like. let's get into it 🎀

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✨ NAME ✨

do_disable_cpu_turbo — the internal turbo disable function 🌀

like, the internal one. the backstage one. the one that actually does the thing while everybody else takes the credit. main character energy but make it a kernel helper 💅

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✨ SYNOPSIS ✨

void do_disable_cpu_turbo (void *data );

that's the whole signature, no cap. returns void (so it gives you nothing back, and that's fine, we respect it) and takes one void * called data. 🫶

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✨ ARGUMENTS ✨

• data — unused 🙈

literally. it's unused. it's giving "invited to the party but standing in the corner the whole time." we love a parameter that's just there for the vibe ✨

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✨ DESCRIPTION ✨

so here's the tea 🍓 — this is the internal function for actually updating MSRs. that's the real work, the behind-the-scenes moment, the whole reason this function exists.

the way that turbo works is: when we enable/disable turbo, we need to do it on each CPU. every single one. no skipping. no "eh, close enough." all of them, fr fr 🔥

and this function? this is the one that gets called by on_each_cpu when needed. so on_each_cpu is the group chat that pings everybody, and do_disable_cpu_turbo is the message that actually lands. iconic behavior honestly 👑

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🌈 SEE ALSO 🌈

okay this list is LONG but every single one of these is required reading, so buckle up buttercup 🦋

Kernel file ./drivers/platform/x86/intel_ips.c, plus:

• ips_cpu_busy(9)
• ips_cpu_raise(9)
• ips_cpu_lower(9)
• do_enable_cpu_turbo(9)
• ips_enable_cpu_turbo(9)
• ips_disable_cpu_turbo(9)
• ips_gpu_busy(9)
• ips_gpu_raise(9)
• ips_gpu_lower(9)
• ips_enable_gpu_turbo(9)
• ips_disable_gpu_turbo(9)
• mcp_exceeded(9)
• cpu_exceeded(9)
• mch_exceeded(9)
• verify_limits(9)
• update_turbo_limits(9)
• ips_adjust(9)
• ips_monitor(9)
• ips_irq_handler(9)
• ips_detect_cpu(9)
• ips_get_i915_syms(9)

yeah that's twenty-one friends and a file path. read them all, i believe in you 💖

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💀 tiny disclaimer bestie: this is an internal function and it's reached via on_each_cpu, so don't go calling it like it's a public API and then act surprised. iykyk.

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kay that's the whole page!! 🌸 this came to you from ./drivers/platform/x86, dated October 2026, and it's do_disable_cpu_turbo(9) forever and always. mwah, bye bestie 🧚💜