sched_set_itmt_support(9)

🌸 NAME 🌸

<pink>sched_set_itmt_support</pink> — bestie, this is the Kernel API Manual page for Indicate platform supports ITMT ✨

✨ SYNOPSIS ✨

int sched_set_itmt_support (void );

🎀 ARGUMENTS 🎀

• void — no arguments. Literally none, bestie 🫶

🦋 DESCRIPTION 🦋

This function is how the OS tells the scheduler that the platform is capable of supporting the ITMT feature. It’s giving “hey scheduler, we can do the thing” 💅

Right now the scheme is: the pstate driver detects whether the system is ITMT capable, then calls sched_set_itmt_support.

Timing check, bestie: this must be done only after sched_set_itmt_core_prio has been called to set the cpus' priorities. Don’t skip that step, okay?

🚨 It must not be called with the cpu hot plug lock held — we need to acquire that lock later to rebuild sched domains. So yeah, absolutely do not hold that lock here. Not a vibe. Not it. 😭

🔥 RETURN 🔥

• 0 on success.

👑 SEE ALSO 👑

• Kernel file ./arch/x86/kernel/itmt.c
• sched_clear_itmt_support(9)
• sched_set_itmt_core_prio(9)

xoxo, your fav Unix bestie 💅🫶 — source/version: ./arch/x86/kernel; date: October 2026; page: sched_set_itmt_support(9). Periodt. 💖