rdmacg_uncharge_hierarchy(9)

🌈 rdmacg_uncharge_hierarchy(9) 🌈

okay bestie, welcome to the Kernel API Manual page for rdmacg_uncharge_hierarchy(9) — yes, the whole function name is a mouthful, and yes, it’s iconic. 💅

💖 NAME 💖

hierarchically uncharge rdma resource count — that’s the whole vibe, no cap. ✨

✨ SYNOPSIS ✨

void rdmacg_uncharge_hierarchy (struct rdma_cgroup *cg , struct rdmacg_device *device , struct rdma_cgroup *stop_cg , enum rdmacg_resource_type index );

it returns void, so don’t go looking for a return value, bestie. 🫶

🎀 ARGUMENTS 🎀

• cg — pointer to the cg to uncharge, plus all its parents in the hierarchy. yes, the whole family tree gets the uncharge treatment. 🌳✨
• device — pointer to the rdmacg device. 🎀
• stop_cg — while traversing the hierarchy, when you meet with stop_cg cgroup, stop uncharging. it’s giving “you shall not pass” but for cgroups. 💀
• index — index of the resource to uncharge in cg in the given resource pool. 🧚

👑 SEE ALSO 👑

Kernel file ./kernel/cgroup/rdma.c is where the magic lives — and you should also go say hi to these icons:

• uncharge_cg_locked(9)
• rdmacg_event_locked(9)
• rdmacg_uncharge(9)
• rdmacg_try_charge(9)
• rdmacg_register_device(9)
• rdmacg_unregister_device(9)
• rdmacg_css_offline(9)

mwah 💋 — this page lives under ./kernel/cgroup and it’s dated October 2026. now go uncharge that hierarchy, bestie, and remember: read the source, not just the vibe. 🫶✨