em_pd_get(9)

💅 em_pd_get(9) 💅

okay bestie, welcome to the em_pd_get(9) page from the Kernel API Manual — this is the lil kernel-API moment where we go find a device’s performance domain, and honestly? iconic. 🦋✨

🌸 NAME 🌸

em_pd_get — Return the performance domain for a device.

🎀 SYNOPSIS 🎀

struct em_perf_domain * em_pd_get (struct device *dev );

🧚 ARGUMENTS 🧚

• dev — Device to find the performance domain for 👀💖

✨ DESCRIPTION ✨

so here’s the tea: this returns the performance domain that dev belongs to. if it doesn’t exist? you get NULL, and that’s literally it. periodt. 💅

🔥 SEE ALSO 🔥

go check out these besties too, fr fr:

• 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_cpu_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)

mwah 💖 source vibes: ./kernel/power · date: October 2026 · star of the show: em_pd_get(9) 🎀🫶