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>
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2 changed files with 3 additions and 4 deletions
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@ -52,8 +52,9 @@ extern unsigned long calc_highpages(void);
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#define PAGE_READONLY SRMMU_PAGE_RDONLY
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#define PAGE_KERNEL SRMMU_PAGE_KERNEL
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/* Top-level page directory */
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extern pgd_t swapper_pg_dir[1024];
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/* Top-level page directory - dummy used by init-mm.
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* srmmu.c will assign the real one (which is dynamically sized) */
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#define swapper_pg_dir NULL
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extern void paging_init(void);
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@ -58,8 +58,6 @@ sun4e_notsup:
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/* This was the only reasonable way I could think of to properly align
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* these page-table data structures.
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*/
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.globl swapper_pg_dir
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swapper_pg_dir: .skip PAGE_SIZE
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.globl empty_zero_page
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empty_zero_page: .skip PAGE_SIZE
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