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authorPallipadi, Venkatesh <venkatesh.pallipadi@intel.com>2010-02-10 15:26:07 -0800
committerH. Peter Anvin <hpa@zytor.com>2010-02-18 15:41:36 -0800
commit9e41a49aab88a5a6c8f4875bf10a5543bc321f2d (patch)
tree65a4921f5a7973f017e66b9ca00b6427eb3a6c83 /arch/x86/mm/Makefile
parentbe5a0c126ad1dea2128dc5aef12c87083518d1ab (diff)
x86, pat: Migrate to rbtree only backend for pat memtype management
Move pat backend to fully rbtree based implementation from the existing rbtree and linked list hybrid. New rbtree based solution uses interval trees (augmented rbtrees) in order to store the PAT ranges. The new code seprates out the pat backend to pat_rbtree.c file, making is cleaner. The change also makes the PAT lookup, reserve and free operations more optimal, as we don't have to traverse linear linked list of few tens of entries in normal case. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> LKML-Reference: <20100210232607.GB11465@linux-os.sc.intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/mm/Makefile')
-rw-r--r--arch/x86/mm/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/mm/Makefile b/arch/x86/mm/Makefile
index 06630d26e56..a4c768397ba 100644
--- a/arch/x86/mm/Makefile
+++ b/arch/x86/mm/Makefile
@@ -6,6 +6,7 @@ nostackp := $(call cc-option, -fno-stack-protector)
CFLAGS_physaddr.o := $(nostackp)
CFLAGS_setup_nx.o := $(nostackp)
+obj-$(CONFIG_X86_PAT) += pat_rbtree.o
obj-$(CONFIG_SMP) += tlb.o
obj-$(CONFIG_X86_32) += pgtable_32.o iomap_32.o