Michael Kerrisk
619dbe1c6d
cgroups.7: wfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2019-02-02 19:48:15 +01:00
Michael Kerrisk
4b1c2041f4
cgroups.7: Reframe the text on delegation to include more details about cgroups v1
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2019-01-23 22:17:17 +01:00
Michael Kerrisk
2b91ed4e5f
cgroups.7: wfix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2019-01-23 22:17:17 +01:00
Michael Kerrisk
51629a3000
cgroups.7: wfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2019-01-23 22:17:17 +01:00
Michael Kerrisk
87b18a8b63
cgroups.7: Soften the discussion about delegation in cgroups v1
...
Balbir pointed out that v1 delegation was not an accidental
feature.
Reported-by: Balbir Singh <bsingharora@gmail.com>
Reported-by: Marcus Gelderie <redmnic@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2019-01-23 22:17:17 +01:00
Michael Kerrisk
e366c4d48d
cgroups.7: wfix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2019-01-23 22:17:17 +01:00
Michael Kerrisk
aa2c362324
cgroups.7: Minor fix: bump kernel version to 4.19 in a couple of points
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The stated points still hold true as at Linux 4.1.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-11-07 21:30:33 +01:00
Michael Kerrisk
77eefc59bd
cgroups.7: tfix
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Reported-by: Alan Jenkins <alan.christopher.jenkins@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-11-04 11:29:06 +01:00
Michael Kerrisk
44084d19bb
cgroups.7: Complete partial sentence re kernel boot options and 'nsdelegate'
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The intended text was hidden elsewhere in the source of the
page as a comment.
https://bugzilla.kernel.org/show_bug.cgi?id=201029
Reported-by: Mike Weilgart <mike.weilgart@verticalsysadmin.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-10-14 10:10:02 +02:00
Michael Kerrisk
17094a28ff
cgroups.7: Minor wording fix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-10-09 11:48:45 +02:00
Michael Kerrisk
edc90967b9
cgroups.7: wfix: use "threads" consistently
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-10-09 11:48:03 +02:00
Michael Kerrisk
0bef253ec5
cgroups.7: Add more detail on v2 'cpu' controller and realtime threads
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Explicitly note the scheduling policies that are relevant for the
v2 'cpu' controller.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-10-09 11:45:43 +02:00
Michael Kerrisk
4644794c1e
cgroups.7: Minor wording fix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-10-05 08:49:15 +02:00
Michael Kerrisk
6c9aa5ad5f
cgroups.7: Rework discussion of writing to cgroup.type file
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In particular, it is possible to write "threaded" to a
cgroup.type file if the current type is "domain threaded".
Previously, the text had implied that this was not possible.
Verified by experiment on Linux 4.15 and 4.19-rc.
Reported-by: Leah Hanson <lhanson@pivotal.io>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-10-05 08:22:10 +02:00
Michael Kerrisk
396761eee3
cgroups.7: Minor clarification to remove possible ambiguity
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-09-20 12:25:00 +02:00
Michael Kerrisk
c2df769494
cgroups.7: tfix
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Reported-by: Mike Weilgart <mike.weilgart@verticalsysadmin.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-09-06 23:19:36 +02:00
Michael Kerrisk
7747ed9789
cgroups.7: cgroup.events transitions generate POLLERR as well as POLLPRI
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-02-10 09:46:14 +01:00
Michael Kerrisk
2cd9bbfa48
Removed trailing white space at end of lines
2018-02-02 07:48:33 +01:00
Michael Kerrisk
8538a62b4c
iconv.1, bpf.2, copy_file_range.2, fcntl.2, memfd_create.2, mlock.2, mount.2, mprotect.2, perf_event_open.2, pkey_alloc.2, prctl.2, read.2, recvmmsg.2, s390_sthyi.2, seccomp.2, sendmmsg.2, syscalls.2, unshare.2, write.2, errno.3, fgetpwent.3, fts.3, pthread_rwlockattr_setkind_np.3, fuse.4, veth.4, capabilities.7, cgroups.7, ip.7, man-pages.7, namespaces.7, network_namespaces.7, sched.7, socket.7, user_namespaces.7, iconvconfig.8: tstamp
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-02-02 07:38:54 +01:00
Jakub Wilk
7a1cddd289
cgroups.7: tfix
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Signed-off-by: Jakub Wilk <jwilk@jwilk.net>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-26 19:58:40 +01:00
Michael Kerrisk
cd7f4c4958
cgroups.7: Add a detail on delegation of cgroup.threads
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Some notes from a conversation with Tejun Heo:
Subject: Re: cgroups(7): documenting cgroups v2 delegation
Date: Wed, 10 Jan 2018 14:27:26 -0800
From: Tejun Heo <tj@kernel.org>
> > 1. When delegating, cgroup.threads should be delegated. Doing that
> > selectively doesn't achieve anything meaningful.
>
> Understood. But surely delegating cgroup.threads is effectively
> meaningless when delegating a "domain" cgroup tree? (Obviously it's
> not harmful to delegate the the cgroup.threads file in this case;
> it's just not useful to do so.)
Yeap, unless we can somehow support non-root mixed domains.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-11 00:52:26 +01:00
Michael Kerrisk
6dc513cd38
cgroups.7: Subhierarchy under delegated subtree will be owned by delegatee
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-11 00:47:12 +01:00
Michael Kerrisk
7b327dd5f3
cgroups.7: Add a detail on delegation of cgroup.threads
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-11 00:47:12 +01:00
Michael Kerrisk
d84e558ef3
cgroups.7: Define containment rules for cgroup.threads
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Reviewed-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-11 00:47:12 +01:00
Michael Kerrisk
446d164326
cgroups.7: Minor wording fixes
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-11 00:47:12 +01:00
Michael Kerrisk
c7913617f7
cgroups.7: cgroup.threads should appear in /sys/kernel/cgroup/delegate
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As discussed with Tejun Heo and Roman Gushchin, the
omission of this file from the list is a bug, and
is about to be fixed by a kernel patch from Roman.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-11 00:47:12 +01:00
Michael Kerrisk
6125483529
cgroups.7: Add some rationale for the existence of the "domain invalid" cgroup type
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-11 00:47:12 +01:00
Michael Kerrisk
dc581e07a4
cgroups.7: wfix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-11 00:47:12 +01:00
Michael Kerrisk
0736182888
cgroups.7: Point out that 'nsdelegate' can also be applied on a remount
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-11 00:47:12 +01:00
Michael Kerrisk
277559a45c
cgroups.7: Clarify that cgroup.controllers is read-only
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-11 00:47:12 +01:00
Michael Kerrisk
639b6c8c57
cgroups.7: cgroup.threads is also delegated if delegating a threaded subtree
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-11 00:46:56 +01:00
Michael Kerrisk
4178f13224
cgroups.7: cgroup.threads is writable only inside a threaded subtree
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-10 00:35:47 +01:00
Michael Kerrisk
b2c3e72073
cgroups.7: ffix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-10 00:35:47 +01:00
Michael Kerrisk
2e69ff536c
cgroups.7: ffix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-10 00:35:47 +01:00
Michael Kerrisk
d311c798b7
cgroups.7: Add a more complete description of cgroup v1 named hierarchies
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-10 00:35:47 +01:00
Michael Kerrisk
218eadf4ae
cgroups.7: srcfix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-10 00:35:47 +01:00
Michael Kerrisk
a76748a0e1
cgroups.7: Remove accidentally duplicated NOTES and ERRORS sections
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-10 00:35:47 +01:00
Michael Kerrisk
c56ec51ba6
cgroups.7: Elaborate a little on problems of splitting threads across cgroups in v1
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-10 00:35:47 +01:00
Michael Kerrisk
7b574df5c6
cgroups.7: tfix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-10 00:35:47 +01:00
Michael Kerrisk
59af05147e
cgroups.7: Document 'release_agent' mount option
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-10 00:35:47 +01:00
Michael Kerrisk
56769384da
cgroups.7: Rework text on threads and cgroups v2
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-10 00:35:47 +01:00
Michael Kerrisk
980f1827b0
cgroups.7: wfix
...
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-10 00:35:47 +01:00
Michael Kerrisk
fcf115f54f
cgroups.7: wfix
...
Reported-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-10 00:35:47 +01:00
Michael Kerrisk
d1d4f69503
cgroups.7: srcfix: remove FIXME
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Tejun noted that his statement wasn't correct.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-10 00:35:47 +01:00
Michael Kerrisk
ed3f4f34fc
cgroups.7: Document cgroup v2 delegation via the 'nsdelegate' mount option
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Reviewed-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-10 00:35:47 +01:00
Michael Kerrisk
148e0800eb
cgroups.7: Modify cgroup v2 delegation subheading
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We are about to add description of a different kind
of delegation (nsdelegate) with its own subheading.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-10 00:35:47 +01:00
Michael Kerrisk
27b086e998
cgroups.7: Add a subheading for delegation containment rules
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This is useful in preparation for adding discussion of the
'nsdelegate' mount option.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-10 00:35:47 +01:00
Michael Kerrisk
6413d78493
cgroups.7: Document /sys/kernel/cgroup/features
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Reviewed-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-10 00:35:47 +01:00
Michael Kerrisk
668ef76586
cgroups.7: Document /sys/kernel/cgroup/delegate
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Reviewed-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-10 00:35:47 +01:00
Michael Kerrisk
28f612ea3d
cgroups.7: Note Linux 4.11 changes to cgroup v2 delegation containment rules
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See kernel commit 576dd464505fc53d501bb94569db76f220104d28
Reported-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2018-01-10 00:35:47 +01:00