Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d78d0891d3dd976a2fb707c6c691d9cd5ed60727 Commit: d78d0891d3dd976a2fb707c6c691d9cd5ed60727 Parent: 43bed127376ff2ef9c268cf6688a43d0fbed2ff4 Author: David S. Miller <[EMAIL PROTECTED]> AuthorDate: Wed Mar 14 22:47:01 2007 -0700 Committer: David S. Miller <[EMAIL PROTECTED]> CommitDate: Thu Apr 26 01:55:22 2007 -0700
[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 <[EMAIL PROTECTED]> --- arch/sparc64/Kconfig | 1 + include/asm-sparc64/sparsemem.h | 6 +++--- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/arch/sparc64/Kconfig b/arch/sparc64/Kconfig index 51c87fd..590a41b 100644 --- a/arch/sparc64/Kconfig +++ b/arch/sparc64/Kconfig @@ -220,6 +220,7 @@ config ARCH_SPARSEMEM_ENABLE config ARCH_SPARSEMEM_DEFAULT def_bool y + select SPARSEMEM_STATIC config LARGE_ALLOCS def_bool y diff --git a/include/asm-sparc64/sparsemem.h b/include/asm-sparc64/sparsemem.h index ed5c9d8..411e0e2 100644 --- a/include/asm-sparc64/sparsemem.h +++ b/include/asm-sparc64/sparsemem.h @@ -3,9 +3,9 @@ #ifdef __KERNEL__ -#define SECTION_SIZE_BITS 26 -#define MAX_PHYSADDR_BITS 42 -#define MAX_PHYSMEM_BITS 42 +#define SECTION_SIZE_BITS 31 +#define MAX_PHYSADDR_BITS 41 +#define MAX_PHYSMEM_BITS 41 #endif /* !(__KERNEL__) */ - To unsubscribe from this list: send the line "unsubscribe git-commits-head" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html