[PATCH v4 05/14] Add a __GFP_KMEMCG flag
From: Glauber Costa <hidden>
Date: 2012-10-08 10:07:55
Also in:
linux-mm, lkml
Subsystem:
memory management - core, memory management - page allocator, the rest, tracing · Maintainers:
Andrew Morton, David Hildenbrand, Vlastimil Babka, Linus Torvalds, Steven Rostedt, Masami Hiramatsu
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. [ v4: make flag unconditional, also declare it in trace code ] Signed-off-by: Glauber Costa <redacted> CC: Christoph Lameter <redacted> CC: Pekka Enberg <penberg-bbCR+/B0CizivPeTLB3BmA@public.gmane.org> CC: Michal Hocko <redacted> CC: Suleiman Souhlal <redacted> Acked-by: Johannes Weiner <redacted> Acked-by: Rik van Riel <redacted> Acked-by: Mel Gorman <redacted> Acked-by: Kamezawa Hiroyuki <redacted> --- include/linux/gfp.h | 3 ++- include/trace/events/gfpflags.h | 1 + 2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index 02c1c97..9289d46 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h@@ -31,6 +31,7 @@ struct vm_area_struct; #define ___GFP_THISNODE 0x40000u #define ___GFP_RECLAIMABLE 0x80000u #define ___GFP_NOTRACK 0x200000u +#define ___GFP_KMEMCG 0x400000u #define ___GFP_OTHER_NODE 0x800000u #define ___GFP_WRITE 0x1000000u
@@ -87,7 +88,7 @@ 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).
diff --git a/include/trace/events/gfpflags.h b/include/trace/events/gfpflags.h
index 9391706..730df12 100644
--- a/include/trace/events/gfpflags.h
+++ b/include/trace/events/gfpflags.h@@ -36,6 +36,7 @@ {(unsigned long)__GFP_RECLAIMABLE, "GFP_RECLAIMABLE"}, \ {(unsigned long)__GFP_MOVABLE, "GFP_MOVABLE"}, \ {(unsigned long)__GFP_NOTRACK, "GFP_NOTRACK"}, \ + {(unsigned long)__GFP_KMEMCG, "GFP_KMEMCG"}, \ {(unsigned long)__GFP_OTHER_NODE, "GFP_OTHER_NODE"} \ ) : "GFP_NOWAIT"
--
1.7.11.4