[PATCH v3 05/13] Add a __GFP_KMEMCG flag
From: Glauber Costa <hidden>
Date: 2012-09-18 14:09:24
Also in:
linux-mm, lkml
Subsystem:
memory management - core, memory management - page allocator, the rest · Maintainers:
Andrew Morton, David Hildenbrand, Vlastimil Babka, Linus Torvalds
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 <redacted> CC: Christoph Lameter <redacted> CC: Pekka Enberg <penberg-bbCR+/B0CizivPeTLB3BmA@public.gmane.org> CC: Michal Hocko <redacted> CC: Johannes Weiner <redacted> CC: Suleiman Souhlal <redacted> CC: Rik van Riel <redacted> CC: Mel Gorman <redacted> Acked-by: Kamezawa Hiroyuki <redacted> --- 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).
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1.7.11.4