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[PATCH v3 05/13] Add a __GFP_KMEMCG flag [message #47895 is a reply to message #47886]

Tue, 18 September 2012 14:04

Glauber Costa
Messages: 916
Registered: October 2011

Senior Member

This flag is used to indicate to the callees that this allocation is a
kernel allocation in process context, and should be accounted to
current's memcg. It takes numerical place of the of the recently removed
__GFP_NO_KSWAPD.

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: Johannes Weiner <hannes@cmpxchg.org>
CC: Suleiman Souhlal <suleiman@google.com>
CC: Rik van Riel <riel@redhat.com>
CC: Mel Gorman <mel@csn.ul.ie>
Acked-by: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
---
include/linux/gfp.h | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index f9bc873..d8eae4d 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -35,6 +35,11 @@ struct vm_area_struct;
#else
#define ___GFP_NOTRACK 0
#endif
+#ifdef CONFIG_MEMCG_KMEM
+#define ___GFP_KMEMCG 0x400000u
+#else
+#define ___GFP_KMEMCG 0
+#endif
#define ___GFP_OTHER_NODE 0x800000u
#define ___GFP_WRITE 0x1000000u

@@ -91,7 +96,7 @@ struct vm_area_struct;

#define __GFP_OTHER_NODE ((__force gfp_t)___GFP_OTHER_NODE) /* On behalf of other node */
#define __GFP_WRITE ((__force gfp_t)___GFP_WRITE) /* Allocator intends to dirty page */
-
+#define __GFP_KMEMCG ((__force gfp_t)___GFP_KMEMCG) /* Allocation comes from a memcg-accounted resource */
/*
* This may seem redundant, but it's a way of annotating false positives vs.
* allocations that simply cannot be supported (e.g. page tables).
--
1.7.11.4

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[Message index]

		[PATCH v3 00/13] kmem controller for memcg. By: Glauber Costa on Tue, 18 September 2012 14:03
		[PATCH v3 03/13] memcg: change defines to an enum By: Glauber Costa on Tue, 18 September 2012 14:04
		Re: [PATCH v3 03/13] memcg: change defines to an enum By: Johannes Weiner on Mon, 01 October 2012 19:06
		Re: [PATCH v3 03/13] memcg: change defines to an enum By: Glauber Costa on Tue, 02 October 2012 09:10
		[PATCH v3 12/13] execute the whole memcg freeing in rcu callback By: Glauber Costa on Tue, 18 September 2012 14:04
		Re: [PATCH v3 12/13] execute the whole memcg freeing in rcu callback By: Tejun Heo on Fri, 21 September 2012 17:23
		Re: [PATCH v3 12/13] execute the whole memcg freeing in rcu callback By: Glauber Costa on Mon, 24 September 2012 08:48
		Re: [PATCH v3 12/13] execute the whole memcg freeing in rcu callback By: Michal Hocko on Mon, 01 October 2012 13:27
		Re: [PATCH v3 12/13] execute the whole memcg freeing in rcu callback By: Glauber Costa on Thu, 04 October 2012 10:53
		Re: [PATCH v3 12/13] execute the whole memcg freeing in rcu callback By: Glauber Costa on Thu, 04 October 2012 14:20
		Re: [PATCH v3 12/13] execute the whole memcg freeing in rcu callback By: Johannes Weiner on Fri, 05 October 2012 15:31
		Re: [PATCH v3 12/13] execute the whole memcg freeing in rcu callback By: Glauber Costa on Mon, 08 October 2012 09:45
		[PATCH v3 01/13] memcg: Make it possible to use the stock for more than one page. By: Glauber Costa on Tue, 18 September 2012 14:03
		Re: [PATCH v3 01/13] memcg: Make it possible to use the stock for more than one page. By: Johannes Weiner on Mon, 01 October 2012 18:48
		[PATCH v3 07/13] mm: Allocate kernel pages to the right memcg By: Glauber Costa on Tue, 18 September 2012 14:04
		Re: [PATCH v3 07/13] mm: Allocate kernel pages to the right memcg By: Mel Gorman on Thu, 27 September 2012 13:50
		Re: [PATCH v3 07/13] mm: Allocate kernel pages to the right memcg By: Glauber Costa on Fri, 28 September 2012 09:43
		Re: [PATCH v3 07/13] mm: Allocate kernel pages to the right memcg By: Mel Gorman on Fri, 28 September 2012 13:28
		Re: [PATCH v3 07/13] mm: Allocate kernel pages to the right memcg By: Michal Hocko on Thu, 27 September 2012 13:52
		[PATCH v3 10/13] memcg: use static branches when code not in use By: Glauber Costa on Tue, 18 September 2012 14:04
		Re: [PATCH v3 10/13] memcg: use static branches when code not in use By: Michal Hocko on Mon, 01 October 2012 12:25
		Re: [PATCH v3 10/13] memcg: use static branches when code not in use By: Glauber Costa on Mon, 01 October 2012 12:27
		[PATCH v3 06/13] memcg: kmem controller infrastructure By: Glauber Costa on Tue, 18 September 2012 14:04
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Glauber Costa on Fri, 21 September 2012 08:41
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: JoonSoo Kim on Fri, 21 September 2012 09:14
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: JoonSoo Kim on Thu, 20 September 2012 16:05
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Michal Hocko on Wed, 26 September 2012 15:51
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Glauber Costa on Thu, 27 September 2012 11:31
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Michal Hocko on Thu, 27 September 2012 13:44
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Glauber Costa on Fri, 28 September 2012 11:34
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Tejun Heo on Sun, 30 September 2012 08:25
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Glauber Costa on Mon, 01 October 2012 08:28
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Tejun Heo on Wed, 03 October 2012 22:11
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Michal Hocko on Mon, 01 October 2012 09:44
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Michal Hocko on Mon, 01 October 2012 09:48
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Glauber Costa on Mon, 01 October 2012 10:09
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Michal Hocko on Mon, 01 October 2012 11:51
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Glauber Costa on Mon, 01 October 2012 11:51
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Michal Hocko on Mon, 01 October 2012 11:58
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Glauber Costa on Mon, 01 October 2012 12:04
		[PATCH v3 11/13] memcg: allow a memcg with kmem charges to be destructed. By: Glauber Costa on Tue, 18 September 2012 14:04
		Re: [PATCH v3 11/13] memcg: allow a memcg with kmem charges to be destructed. By: Michal Hocko on Mon, 01 October 2012 12:30
		[PATCH v3 09/13] memcg: kmem accounting lifecycle management By: Glauber Costa on Tue, 18 September 2012 14:04
		Re: [PATCH v3 09/13] memcg: kmem accounting lifecycle management By: Michal Hocko on Mon, 01 October 2012 12:15
		Re: [PATCH v3 09/13] memcg: kmem accounting lifecycle management By: Glauber Costa on Mon, 01 October 2012 12:29
		Re: [PATCH v3 09/13] memcg: kmem accounting lifecycle management By: Michal Hocko on Mon, 01 October 2012 12:36
		Re: [PATCH v3 09/13] memcg: kmem accounting lifecycle management By: Glauber Costa on Mon, 01 October 2012 12:43
		[PATCH v3 05/13] Add a __GFP_KMEMCG flag By: Glauber Costa on Tue, 18 September 2012 14:04
		Re: [PATCH v3 05/13] Add a __GFP_KMEMCG flag By: Rik van Riel on Tue, 18 September 2012 14:15
		Re: [PATCH v3 05/13] Add a __GFP_KMEMCG flag By: Christoph Lameter on Tue, 18 September 2012 15:06
		Re: [PATCH v3 05/13] Add a __GFP_KMEMCG flag By: Glauber Costa on Wed, 19 September 2012 07:39
		Re: [PATCH v3 05/13] Add a __GFP_KMEMCG flag By: Christoph Lameter on Wed, 19 September 2012 14:07
		Re: [PATCH v3 05/13] Add a __GFP_KMEMCG flag By: Mel Gorman on Thu, 27 September 2012 13:34
		Re: [PATCH v3 05/13] Add a __GFP_KMEMCG flag By: Glauber Costa on Thu, 27 September 2012 13:41
		Re: [PATCH v3 05/13] Add a __GFP_KMEMCG flag By: Johannes Weiner on Mon, 01 October 2012 19:09
		[PATCH v3 13/13] protect architectures where THREAD_SIZE >= PAGE_SIZE against fork bombs By: Glauber Costa on Tue, 18 September 2012 14:04
		Re: [PATCH v3 13/13] protect architectures where THREAD_SIZE >= PAGE_SIZE against fork bombs By: Michal Hocko on Mon, 01 October 2012 13:17

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