acpi_cppc_processor_probe(9)

🌸 NAME — acpi_cppc_processor_probe(9) in the Kernel API Manual 🌸

okay so bestie, acpi_cppc_processor_probe is literally the function whose whole vibe is Search for per CPU _CPC objects. 💅 It’s giving “go find those per-CPU _CPC objects” energy, and this is the acpi_cppc_processor_probe(9) page from the Kernel API Manual. No cap, that’s the name and that’s the mission. ✨

💖 SYNOPSIS 💖

int acpi_cppc_processor_probe (struct acpi_processor *pr );

🎀 ARGUMENTS 🎀

• pr — a pointer to the acpi_processor that holds this CPU’s logical ID. That’s the whole argument, bestie: pointer, processor, logical ID. 🫶

🦋 RETURN 🦋

• 0 for success ✅ — zero is the slay result.
• a negative value for err 😭 — that’s the not-success result, fr fr.

🌈 SEE ALSO 🌈

Kernel file: ./drivers/acpi/cppc_acpi.c — and the whole squad is below, iykyk 👑

• acpi_get_psd_map(9)
• cpc_ffh_supported(9)
• cpc_supported_by_cpu(9)
• pcc_data_alloc(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_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)
• cppc_get_transition_latency(9)

💌 source/version: ./drivers/acpi · date: October 2026 — mwah, bestie, go probe those _CPC objects 💋