purge_effective_progs(9)

💖 NAME 💖

okay so bestie, welcome to purge_effective_progs(9) from the Kernel API Manual — and it is literally the recovery arc ✨ After compute_effective_progs fails to alloc the new cgrp->bpf.inactive table, we can recover by recomputing the array in place. no cap, that's the whole glow-up 🫶

✨ SYNOPSIS ✨

void purge_effective_progs (struct cgroup *cgrp , struct bpf_prog_list *pl , enum cgroup_bpf_attach_type atype );

it's giving void, so nothing comes back — just vibes and a recomputed array 💅

🎀 ARGUMENTS 🎀

• cgrp — the cgroup whose descendants we're traversing. that's the whole “which descendants to travers” situation, but make it make sense 😭
• pl — the prog_list entry being detached. main character energy fr fr.
• atype — type of detach operation. okayyy, specifying the detach vibe 🔥

🌈 SEE ALSO 🌈

Kernel file ./kernel/bpf/cgroup.c is where the magic lives, bestie. also go say hi to the whole squad:

• cgroup_bpf_release(9)
• cgroup_bpf_release_fn(9)
• cgroup_bpf_inherit(9)
• __cgroup_bpf_attach(9)
• __cgroup_bpf_replace(9)
• __cgroup_bpf_detach(9)
• __cgroup_bpf_run_filter_skb(9)
• __cgroup_bpf_run_filter_sk(9)
• __cgroup_bpf_run_filter_sock_addr(9)
• __cgroup_bpf_run_filter_sock_ops(9)
• __cgroup_bpf_run_filter_sysctl(9)

okay that's the page, bestie 🫶 this cutie is from ./kernel/bpf, dated October 2026, and it's literally called purge_effective_progs(9) — periodt. 💜