From: Sam Ravnborg Date: Thu, 26 Jul 2012 11:02:16 +0000 (+0000) Subject: sparc32: drop swapper_pg_dir X-Git-Tag: v3.6-rc1~77^2~13 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=881e02d298451e1788669662e72ccfd69859dae5;p=platform%2Fkernel%2Flinux-stable.git sparc32: drop swapper_pg_dir We save one page of RAM dropping swapper_pg_dir. It was only used for an assignment in init-mm.c and we redid this later in srmmu.c anyway. This is likely a left-over from the sun4c removal. To avoid a dummy variable we use a simple #define swapper_pg_dir NULL Signed-off-by: Sam Ravnborg Signed-off-by: David S. Miller --- diff --git a/arch/sparc/include/asm/pgtable_32.h b/arch/sparc/include/asm/pgtable_32.h index cbbbed5..c704f94 100644 --- a/arch/sparc/include/asm/pgtable_32.h +++ b/arch/sparc/include/asm/pgtable_32.h @@ -52,8 +52,9 @@ extern unsigned long calc_highpages(void); #define PAGE_READONLY SRMMU_PAGE_RDONLY #define PAGE_KERNEL SRMMU_PAGE_KERNEL -/* Top-level page directory */ -extern pgd_t swapper_pg_dir[1024]; +/* Top-level page directory - dummy used by init-mm. + * srmmu.c will assign the real one (which is dynamically sized) */ +#define swapper_pg_dir NULL extern void paging_init(void); diff --git a/arch/sparc/kernel/head_32.S b/arch/sparc/kernel/head_32.S index afeb1d7..3d92c0a 100644 --- a/arch/sparc/kernel/head_32.S +++ b/arch/sparc/kernel/head_32.S @@ -58,8 +58,6 @@ sun4e_notsup: /* This was the only reasonable way I could think of to properly align * these page-table data structures. */ - .globl swapper_pg_dir -swapper_pg_dir: .skip PAGE_SIZE .globl empty_zero_page empty_zero_page: .skip PAGE_SIZE