cgroup_thre...change_begin(9)

💖 NAME 💖

okay so bestie, this is cgroup_thre...change_begin(9) from the Kernel API Manual — literally the threadgroup exclusion situation for cgroups. No cap. 🫶

cgroup_threadgroup_change_begin — threadgroup exclusion for cgroups. ✨

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🛠️ SYNOPSIS 🛠️

void cgroup_threadgroup_change_begin (struct task_struct *tsk );

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🎯 ARGUMENTS 🎯

• tsk — target task. That's it, that's the whole argument: the task you're aiming at. 🎯💅

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💅 DESCRIPTION 💅

okay so here's the vibe: this function lets cgroup operations synchronize against threadgroup changes. The mechanics? It uses a global percpu_rw_semaphore and a per threadgroup rw_semaphore when favordynmods is on. 👑

For the deep lore, go read the comment above the CGRP_ROOT_FAVOR_DYNMODS definition — it's all there, iykyk. 🧚💖

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👀 SEE ALSO 👀

Don't forget the配套 reading, bestie:

• Kernel file ./include/linux/cgroup-defs.h 🦋
• cgroup_threadgroup_change_end(9) — the matching end call is waiting for you 🌸

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cute sign-off time: this page comes from ./include/linux, dated October 2026, and the title is cgroup_thre...change_begin(9). bye bestie, slay responsibly 💅💖✨