Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 881e02d2 authored by Sam Ravnborg's avatar Sam Ravnborg Committed by David S. Miller
Browse files

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: default avatarSam Ravnborg <sam@ravnborg.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 7cdfbc74

arch/sparc/include/asm/pgtable_32.h

+3 −2
Original line number Diff line number Diff line
@@ -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);

arch/sparc/kernel/head_32.S

+0 −2
Original line number Diff line number Diff line
@@ -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