cppc_set_auto_sel(9)

💅 cppc_set_auto_sel(9) — Kernel API Manual

Okay bestie, buckle up — this is a page from the Kernel API Manual, and it's honestly a short one but it's kind of iconic. The function is cppc_set_auto_sel, and no cap, its whole job is just: write the autonomous selection register. That's it. That's the gig. 👑

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✨ NAME ✨

cppc_set_auto_sel — write the autonomous selection register. Literally just that. She writes, she slays, she leaves. 🎀

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🌸 SYNOPSIS 🌸

int cppc_set_auto_sel (int cpu , bool enable );

Look at her. Two args, one int, returns an int. Clean, minimal, main character energy fr fr. 💅

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🦋 ARGUMENTS 🦋

• cpu — the CPU you're writing the register to. Like, the specific processor bestie. You gotta tell her which one. 🌈
• enable — the desired value of the autonomous selection register that's about to be updated. (Fun fact: the original page spells it "resiter" 😭 — we still love her, typos and all. 💀)

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🔥 SEE ALSO 🔥

Okay so there are a lot of siblings in this family and we're listing every single one, no skipping, no "etc." energy. Periodt. 👑

Kernel file ./drivers/acpi/cppc_acpi.c, and then — deep breath — acpi_get_psd_map(9), cpc_ffh_supported(9), cpc_supported_by_cpu(9), pcc_data_alloc(9), acpi_cppc_processor_probe(9), acpi_cppc_processor_exit(9), cpc_read_ffh(9), cpc_read_ffh_fb_ctrs(9), cpc_write_ffh(9), cppc_get_desired_perf(9), cppc_get_nominal_perf(9), cppc_get_highest_perf(9), cppc_get_epp_perf(9), cppc_get_perf_caps(9), cppc_perf_ctrs_in_pcc_cpu(9), cppc_perf_ctrs_in_pcc(9), cppc_get_perf_ctrs(9), cppc_set_epp(9), cppc_get_auto_act_window(9), cppc_set_auto_act_window(9), cppc_get_auto_sel(9), cppc_set_enable(9), cppc_get_perf(9), cppc_set_perf(9), cppc_get_perf_limited(9), cppc_set_perf_limited(9), and last but never least, cppc_get_transition_latency(9).

Like I said — huge family. Family reunion energy. 🫶✨

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Heads up bestie: if you mix up cppc_set_auto_sel with cppc_get_auto_sel, that's a whole different vibe — one of them writes, one of them reads. Don't let the lowercase letters fool you. 💜

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💖 That's the whole page, bestie! 💖 This lil' beauty lives in ./drivers/acpi and it's dated October 2026 — bookmark it, screenshot it, tattoo it on your forearm, idk, do your thing. 🦋🌸🎀💅