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[PATCH v4 19/19] Add slab-specific documentation about the kmem controller [message #48310 is a reply to message #48308]

Fri, 12 October 2012 13:41

Glauber Costa
Messages: 916
Registered: October 2011

Senior Member

Signed-off-by: Glauber Costa <glommer@parallels.com>
CC: Christoph Lameter <cl@linux.com>
CC: Pekka Enberg <penberg@cs.helsinki.fi>
CC: Michal Hocko <mhocko@suse.cz>
CC: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
CC: Johannes Weiner <hannes@cmpxchg.org>
CC: Suleiman Souhlal <suleiman@google.com>
CC: Tejun Heo <tj@kernel.org>
---
Documentation/cgroups/memory.txt | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/Documentation/cgroups/memory.txt b/Documentation/cgroups/memory.txt
index dd15be8..95e4809 100644
--- a/Documentation/cgroups/memory.txt
+++ b/Documentation/cgroups/memory.txt
@@ -300,6 +300,13 @@ to trigger slab reclaim when those limits are reached.
kernel memory, we prevent new processes from being created when the kernel
memory usage is too high.

+* slab pages: pages allocated by the SLAB or SLUB allocator are tracked. A copy
+of each kmem_cache is created everytime the cache is touched by the first time
+from inside the memcg. The creation is done lazily, so some objects can still be
+skipped while the cache is being created. All objects in a slab page should
+belong to the same memcg. This only fails to hold when a task is migrated to a
+different memcg during the page allocation by the cache.
+
* sockets memory pressure: some sockets protocols have memory pressure
thresholds. The Memory Controller allows them to be controlled individually
per cgroup, instead of globally.
--
1.7.11.4

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[Message index]

		[PATCH v4 00/19] slab accounting for memcg By: Glauber Costa on Fri, 12 October 2012 13:40
		[PATCH v4 12/19] sl[au]b: Allocate objects from memcg cache By: Glauber Costa on Fri, 12 October 2012 13:41
		[PATCH v4 19/19] Add slab-specific documentation about the kmem controller By: Glauber Costa on Fri, 12 October 2012 13:41
		[PATCH v4 15/19] memcg/sl[au]b: shrink dead caches By: Glauber Costa on Fri, 12 October 2012 13:41
		[PATCH v4 10/19] memcg: skip memcg kmem allocations in specified code regions By: Glauber Costa on Fri, 12 October 2012 13:41
		[PATCH v4 13/19] memcg: destroy memcg caches By: Glauber Costa on Fri, 12 October 2012 13:41
		[PATCH v4 05/19] slab: don't preemptively remove element from list in cache destroy By: Glauber Costa on Fri, 12 October 2012 13:40
		[PATCH v4 04/19] sl[au]b: process slabinfo_show in common code By: Glauber Costa on Fri, 12 October 2012 13:40
		[PATCH v4 09/19] memcg: infrastructure to match an allocation to the right cache By: Glauber Costa on Fri, 12 October 2012 13:41
		[PATCH v4 08/19] Allocate memory for memcg caches whenever a new memcg appears By: Glauber Costa on Fri, 12 October 2012 13:41
		[PATCH v4 02/19] move slabinfo processing to slab_common.c By: Glauber Costa on Fri, 12 October 2012 13:40
		[PATCH v4 17/19] slab: propagate tunables values By: Glauber Costa on Fri, 12 October 2012 13:41
		[PATCH v4 06/19] slab/slub: struct memcg_params By: Glauber Costa on Fri, 12 October 2012 13:41
		[PATCH v4 03/19] move print_slabinfo_header to slab_common.c By: Glauber Costa on Fri, 12 October 2012 13:40
		[PATCH v4 11/19] sl[au]b: always get the cache from its page in kfree By: Glauber Costa on Fri, 12 October 2012 13:41
		[PATCH v4 16/19] Aggregate memcg cache values in slabinfo By: Glauber Costa on Fri, 12 October 2012 13:41
		[PATCH v4 01/19] slab: Ignore internal flags in cache creation By: Glauber Costa on Fri, 12 October 2012 13:40
		[PATCH v4 14/19] memcg/sl[au]b Track all the memcg children of a kmem_cache. By: Glauber Costa on Fri, 12 October 2012 13:41
		[PATCH v4 18/19] slub: slub-specific propagation changes. By: Glauber Costa on Fri, 12 October 2012 13:41
		[PATCH v4 07/19] consider a memcg parameter in kmem_create_cache By: Glauber Costa on Fri, 12 October 2012 13:41
		Re: [PATCH v4 00/19] slab accounting for memcg By: Glauber Costa on Thu, 18 October 2012 11:38

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