topology_update_hw_pressure(9)

🌸 NAME 🌸

topology_update_hw_pressure — Update HW pressure for CPUs 💅 and yes bestie, this one is from the Kernel API Manual, so you know it's kernel-business.

✨ SYNOPSIS ✨

void topology_update_hw_pressure (const struct cpumask *cpus , unsigned
long capped_freq );

🎀 ARGUMENTS 🎀

• cpus — the related CPUs for which capacity has been reduced, no cap. 🫶
• capped_freq — the maximum allowed frequency that CPUs can run at. slay. ⚡

💅 DESCRIPTION 💅

okay so this function updates the value of HW pressure for all cpus in the mask. The cpumask should include all (online+offline) affected CPUs, to avoid operating on stale data when hot-plug is used for some CPUs. literally include the offline girlies too, bestie. 💖

capped_freq reflects the currently allowed max CPUs frequency due to HW capping. It might be also a boost frequency value, which is bigger than the internal 'capacity_freq_ref' max frequency. In such case the pressure value should simply be removed, since this is an indication that there is no HW throttling. 🦋✨

and ngl, capped_freq must be provided in kHz. not vibes, not MHz, kHz. periodt. 💀👑

🦋 SEE ALSO 🦋

• Kernel file ./drivers/base/arch_topology.c — go peek at the kernel file, iykyk. 📂💜

✨ cute sign-off: source/version ./drivers/base · date October 2026 · page topology_update_hw_pressure(9) — bye bestie, go slay that kernel work 💖🫶🎀