em_cpu_get(9)

em_cpu_get(9) 💅

okay so this little icon is from the Kernel API Manual, and she is here to help you find where a CPU lives in performance-domain land. periodt. ✨

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✨ NAME ✨

em_cpu_get — Return the performance domain for a CPU 🎀

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🫶 SYNOPSIS 🫶

struct em_perf_domain * em_cpu_get (int cpu );

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💅 ARGUMENTS 💅

• cpu — the CPU you’re trying to find the performance domain for. that’s the whole assignment, bestie. 🔍

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🌸 DESCRIPTION 🌸

Returns the performance domain that cpu belongs to, or NULL if it doesn’t exist. 😭

like, it’s giving “which found family does this CPU belong to?” and if there’s no match, you get NULL. no cap. 💖

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🔥 SEE ALSO 🔥

Kernel file ./kernel/power/energy_model.c 👑

• em_table_free(9)
• em_table_alloc(9)
• em_dev_compute_costs(9)
• em_dev_update_perf_domain(9)
• em_pd_get(9)
• em_dev_register_perf_domain(9)
• em_dev_register_pd_no_update(9)
• em_dev_unregister_perf_domain(9)
• em_adjust_cpu_capacity(9)
• em_dev_update_chip_binning(9)
• em_update_performance_limits(9)

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xoxo, bestie 💖 source/version: ./kernel/power · date: October 2026 · page: em_cpu_get(9) 🎀