__task_lazy_mmu_mode_active(9)

💖 __task_lazy_mmu_mode_active(9) — bestie edition 💖

okay so bestie, welcome to the Kernel API Manual ✨ — this page is literally about __task_lazy_mmu_mode_active, a tiny kernel function that checks a task's lazy MMU mode state. she's giving very specific kernel-helper energy, and we're gonna get into every detail fr fr. 💅

🌸 NAME 🌸

__task_lazy_mmu_mode_active — test the lazy MMU mode state for a task. periodt. 🎀

✨ SYNOPSIS ✨

bool __task_lazy_mmu_mode_active (struct task_struct *tsk );

🦋 ARGUMENTS 🦋

• tsk — the task to check. that's the one, bestie. 🫶

💜 DESCRIPTION 💜

so what she does is check whether tsk has its lazy MMU mode state set to active — meaning it's enabled and not paused. highkey specific, lowkey iconic. 🔥

important vibe check: this function only considers the state saved in task_struct. if you're trying to test whether current actually is in lazy MMU mode, you should use is_lazy_mmu_mode_active instead. no cap. 💯

and this one is intended for architectures that implement the lazy MMU mode; it must not be called from generic code. like, that's a hard boundary, bestie. 🚫

🌈 SEE ALSO 🌈

• Kernel file ./include/linux/sched.h — struct prev_cputime(9)
• is_lazy_mmu_mode_active(9)
• set_cpus_allowed_ptr(9)
• task_nice(9)
• is_idle_task(9)

mwah 💋 and that's the whole page! source/version: ./include/linux; date: October 2026; signature: __task_lazy_mmu_mode_active(9). stay lazy-MMU-aware, bestie 💖