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Chen Ridong f390525e49 cgroup/bpf: only cgroup v2 can be attached by bpf programs

[ Upstream commit 2190df6c91 ]

Only cgroup v2 can be attached by bpf programs, so this patch introduces
that cgroup_bpf_inherit and cgroup_bpf_offline can only be called in
cgroup v2, and this can fix the memleak mentioned by commit 04f8ef5643
("cgroup: Fix memory leak caused by missing cgroup_bpf_offline"), which
has been reverted.

Fixes: 2b0d3d3e4f ("percpu_ref: reduce memory footprint of percpu_ref in fast path")
Fixes: 4bfc0bb2c6 ("bpf: decouple the lifetime of cgroup_bpf from cgroup itself")
Link: https://lore.kernel.org/cgroups/aka2hk5jsel5zomucpwlxsej6iwnfw4qu5jkrmjhyfhesjlfdw@46zxhg5bdnr7/
Signed-off-by: Chen Ridong <chenridong@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2024-12-05 14:01:29 +01:00

cgroup-internal.h

mm, memcg: cg2 memory{.swap,}.peak write handlers

2024-09-01 20:25:53 -07:00

cgroup-v1.c

cgroup: Do not report unavailable v1 controllers in /proc/cgroups

2024-09-10 10:04:28 -10:00

cgroup.c

cgroup/bpf: only cgroup v2 can be attached by bpf programs

2024-12-05 14:01:29 +01:00

cpuset-internal.h

cgroup/cpuset: Move cpu.h include to cpuset-internal.h