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| author | Michael Kerrisk <mtk.manpages@gmail.com> | 2018-01-10 23:19:50 +0100 |
|---|---|---|
| committer | Michael Kerrisk <mtk.manpages@gmail.com> | 2018-01-11 00:47:12 +0100 |
| commit | d84e558ef3efd4731d22e0790e98abaaa389af44 (patch) | |
| tree | 9f5b37ab92916a0eaf9fd8162c5436950bf51ae6 /man7/cgroups.7 | |
| parent | 446d16432656dbcafae27de3b2bc605e36f7e7ee (diff) | |
| download | man-pages-d84e558ef3efd4731d22e0790e98abaaa389af44.tar.gz | |
cgroups.7: Define containment rules for cgroup.threads
Reviewed-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Diffstat (limited to 'man7/cgroups.7')
| -rw-r--r-- | man7/cgroups.7 | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/man7/cgroups.7 b/man7/cgroups.7 index aa3127a05b..35f8bd634d 100644 --- a/man7/cgroups.7 +++ b/man7/cgroups.7 @@ -1328,9 +1328,30 @@ to the files in different cgroups inside the subtree. The threads of a process must all reside in the same threaded subtree. .PP -The +As with writing to +.IR cgroup.procs , +some containment rules apply when writing to the +.I cgroup.threads +file: +.IP * 3 +The writer must have write permission on the +cgroup.threads +file in the destination cgroup. +.IP * +The writer must have write permission on the +.I cgroup.procs +file in the common ancestor of the source and destination cgroups. +(In some cases, +the common ancestor may be the source or destination cgroup itself.) +.IP * +The source and destination cgroups must be in the same threaded subtree. +(Outside a threaded subtree, an attempt to move a thread by writing +its thread ID to the .I cgroup.threads -file is writable only for the cgroups inside a threaded subtree. +file in a different +.I domain +cgroup fails with the error +.BR EOPNOTSUPP .) .PP The .I cgroup.threads |