cgroup: refactor the cgroup_attach_lock code to make it clearer

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Dynamic cgroup migration involving threadgroup locks can be in one of
two states: no lock held, or holding the global lock. Explicitly
declaring the different lock modes to make the code easier to
understand and facilitates future extensions of the lock modes.

Signed-off-by: Yi Tao <escape@linux.alibaba.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

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Yi Tao 2025-09-10 14:59:33 +08:00 • committed by Tejun Heo

parent 4a3e62dfa7

commit a1ffc8ad31

4 changed files with 69 additions and 29 deletions

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8

include/linux/cgroup-defs.h

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9

kernel/cgroup/cgroup-internal.h

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14

kernel/cgroup/cgroup-v1.c

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67

kernel/cgroup/cgroup.c

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