kernel_optimize_test/include/asm-sparc64/sparsemem.h

#ifndef _SPARC64_SPARSEMEM_H
#define _SPARC64_SPARSEMEM_H

#ifdef __KERNEL__

#define SECTION_SIZE_BITS       31
#define MAX_PHYSADDR_BITS       42
#define MAX_PHYSMEM_BITS        42

#endif /* !(__KERNEL__) */

#endif /* !(_SPARC64_SPARSEMEM_H) */
[SPARC64]: Move over to sparsemem. This has been pending for a long time, and the fact that we waste a ton of ram on some configurations kind of pushed things over the edge. Signed-off-by: David S. Miller <davem@davemloft.net> 2006-03-08 18:16:07 +08:00			`#ifndef _SPARC64_SPARSEMEM_H`
			`#define _SPARC64_SPARSEMEM_H`

			`#ifdef __KERNEL__`

[SPARC64]: Use SPARSEMEM_STATIC Decrease the SECTION_SIZE_BITS --> MAX_PHYSADDR_BITS range a little bit. The cost of going to SPARSEMEM_STATIC becomes 8K of BSS space, and in return we save a pointer dereferences on every page struct lookup. Even better we hit the main kernel image for the base address which is in a hugepage locked TLB entry. Signed-off-by: David S. Miller <davem@davemloft.net> 2007-03-15 13:47:01 +08:00			`#define SECTION_SIZE_BITS 31`
[SPARC64]: MAX_PHYSADDR_BITS et al. really need to be 42 bits not 41. Signed-off-by: David S. Miller <davem@davemloft.net> 2007-03-15 15:21:45 +08:00			`#define MAX_PHYSADDR_BITS 42`
			`#define MAX_PHYSMEM_BITS 42`
[SPARC64]: Move over to sparsemem. This has been pending for a long time, and the fact that we waste a ton of ram on some configurations kind of pushed things over the edge. Signed-off-by: David S. Miller <davem@davemloft.net> 2006-03-08 18:16:07 +08:00
			`#endif /* !(__KERNEL__) */`

			`#endif /* !(_SPARC64_SPARSEMEM_H) */`