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authorMatt Tolentino <metolent@snoqualmie.dp.intel.com>2005-06-23 09:08:07 +0200
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-23 18:45:07 +0200
commitbbfceef47fb9467424113a004070bf37a806a97c (patch)
tree3c12cef85abaaa0ca42088fc7600ed687b74fb5e /include/asm-x86_64/bitops.h
parent[PATCH] reorganize x86-64 NUMA and DISCONTIGMEM config options (diff)
downloadlinux-bbfceef47fb9467424113a004070bf37a806a97c.tar.xz
linux-bbfceef47fb9467424113a004070bf37a806a97c.zip
[PATCH] add x86-64 specific support for sparsemem
This patch adds in the necessary support for sparsemem such that x86-64 kernels may use sparsemem as an alternative to discontigmem for NUMA kernels. Note that this does no preclude one from continuing to build NUMA kernels using discontigmem, but merely allows the option to build NUMA kernels with sparsemem. Interestingly, the use of sparsemem in lieu of discontigmem in NUMA kernels results in reduced text size for otherwise equivalent kernels as shown in the example builds below: text data bss dec hex filename 2371036 765884 1237108 4374028 42be0c vmlinux.discontig 2366549 776484 1302772 4445805 43d66d vmlinux.sparse Signed-off-by: Matt Tolentino <matthew.e.tolentino@intel.com> Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-x86_64/bitops.h')
-rw-r--r--include/asm-x86_64/bitops.h2
1 files changed, 0 insertions, 2 deletions
diff --git a/include/asm-x86_64/bitops.h b/include/asm-x86_64/bitops.h
index 5dd7727c756b..a31bb99be53f 100644
--- a/include/asm-x86_64/bitops.h
+++ b/include/asm-x86_64/bitops.h
@@ -411,8 +411,6 @@ static __inline__ int ffs(int x)
/* find last set bit */
#define fls(x) generic_fls(x)
-#define ARCH_HAS_ATOMIC_UNSIGNED 1
-
#endif /* __KERNEL__ */
#endif /* _X86_64_BITOPS_H */