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Commit 881e02d298451e1788669662e72ccfd69859dae5

Authored by Sam Ravnborg
Committed by David S. Miller
1 parent 7cdfbc74c8
Exists in smarc-l5.0.0_1.0.0-ga and in 5 other branches imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga

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 <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Showing 2 changed files with 3 additions and 4 deletions Side-by-side Diff

arch/sparc/include/asm/pgtable_32.h
Diff comments   View file @ 881e02d
... ... @@ -52,8 +52,9 @@
52 52 #define PAGE_READONLY SRMMU_PAGE_RDONLY
53 53 #define PAGE_KERNEL SRMMU_PAGE_KERNEL
54 54  
55   -/* Top-level page directory */
56   -extern pgd_t swapper_pg_dir[1024];
  55 +/* Top-level page directory - dummy used by init-mm.
  56 + * srmmu.c will assign the real one (which is dynamically sized) */
  57 +#define swapper_pg_dir NULL
57 58  
58 59 extern void paging_init(void);
59 60  
arch/sparc/kernel/head_32.S
Diff comments   View file @ 881e02d
... ... @@ -58,8 +58,6 @@
58 58 /* This was the only reasonable way I could think of to properly align
59 59 * these page-table data structures.
60 60 */
61   - .globl swapper_pg_dir
62   -swapper_pg_dir: .skip PAGE_SIZE
63 61 .globl empty_zero_page
64 62 empty_zero_page: .skip PAGE_SIZE
65 63