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authorMel Gorman <mel@csn.ul.ie>2006-09-27 01:49:56 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-09-27 08:26:11 -0700
commit0e0b864e069c52a7b3e4a7da56e29b03a012fd75 (patch)
treee3fcfd997ef912ed3c61cb2b5c2ca57a7f45ec58 /include/linux/mm.h
parent05e0caad3b7bd0d0fbeff980bca22f186241a501 (diff)
[PATCH] Account for memmap and optionally the kernel image as holes
The x86_64 code accounted for memmap and some portions of the the DMA zone as holes. This was because those areas would never be reclaimed and accounting for them as memory affects min watermarks. This patch will account for the memmap as a memory hole. Architectures may optionally use set_dma_reserve() if they wish to account for a portion of memory in ZONE_DMA as a hole. Signed-off-by: Mel Gorman <mel@csn.ul.ie> Cc: Dave Hansen <haveblue@us.ibm.com> Cc: Andy Whitcroft <apw@shadowen.org> Cc: Andi Kleen <ak@muc.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: "Keith Mannthey" <kmannth@gmail.com> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Yasunori Goto <y-goto@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/mm.h')
-rw-r--r--include/linux/mm.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index c0402da7cce0..22936e1fcdf2 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -984,6 +984,7 @@ extern void sparse_memory_present_with_active_regions(int nid);
extern int early_pfn_to_nid(unsigned long pfn);
#endif /* CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID */
#endif /* CONFIG_ARCH_POPULATES_NODE_MAP */
+extern void set_dma_reserve(unsigned long new_dma_reserve);
extern void memmap_init_zone(unsigned long, int, unsigned long, unsigned long);
extern void setup_per_zone_pages_min(void);
extern void mem_init(void);