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| author | Ingo Molnar <mingo@elte.hu> | 2010-03-01 09:28:53 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-03-01 09:28:58 +0100 |
| commit | e2f4699ac15fe36de1288505bc6e6e5a8603ab1b (patch) | |
| tree | 8078d3ff21eaa0a0ed6e446ac94f3681e831cad1 /arch/sh/include/asm/pgtable-2level.h | |
| parent | rcu: Make task_subsys_state() RCU-lockdep checks handle boot-time use (diff) | |
| parent | Merge branch 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/... (diff) | |
| download | linux-e2f4699ac15fe36de1288505bc6e6e5a8603ab1b.tar.xz linux-e2f4699ac15fe36de1288505bc6e6e5a8603ab1b.zip | |
Merge branch 'linus' into core/rcu
Merge reason: Backmerge latest upstream to queue up dependent fix in the
scheduler.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/sh/include/asm/pgtable-2level.h')
| -rw-r--r-- | arch/sh/include/asm/pgtable-2level.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/sh/include/asm/pgtable-2level.h b/arch/sh/include/asm/pgtable-2level.h new file mode 100644 index 000000000000..19bd89db17e7 --- /dev/null +++ b/arch/sh/include/asm/pgtable-2level.h @@ -0,0 +1,23 @@ +#ifndef __ASM_SH_PGTABLE_2LEVEL_H +#define __ASM_SH_PGTABLE_2LEVEL_H + +#include <asm-generic/pgtable-nopmd.h> + +/* + * traditional two-level paging structure + */ +#define PAGETABLE_LEVELS 2 + +/* PTE bits */ +#define PTE_MAGNITUDE 2 /* 32-bit PTEs */ + +#define PTE_SHIFT PAGE_SHIFT +#define PTE_BITS (PTE_SHIFT - PTE_MAGNITUDE) + +/* PGD bits */ +#define PGDIR_SHIFT (PTE_SHIFT + PTE_BITS) + +#define PTRS_PER_PGD (PAGE_SIZE / (1 << PTE_MAGNITUDE)) +#define USER_PTRS_PER_PGD (TASK_SIZE/PGDIR_SIZE) + +#endif /* __ASM_SH_PGTABLE_2LEVEL_H */ |