diff options
| author | Matt Fleming <matt@console-pimps.org> | 2009-11-17 21:05:31 +0000 |
|---|---|---|
| committer | Matt Fleming <matt@console-pimps.org> | 2010-01-16 14:28:57 +0000 |
| commit | 8eda55142080f0373b1f0268fe6d6807f193e713 (patch) | |
| tree | 6d103af69153dc5bfd78ebe89930cf3c66ec5b2b /arch/sh/include/asm/tlb.h | |
| parent | 7dcaa8e8e67b2cfbe0097c9bb52e23aed5443b8b (diff) | |
sh: New extended page flag to wire/unwire TLB entries
Provide a new extended page flag, _PAGE_WIRED and an SH4 implementation
for wiring TLB entries and use it in the fixmap code path so that we can
wire the fixmap TLB entry.
Signed-off-by: Matt Fleming <matt@console-pimps.org>
Diffstat (limited to 'arch/sh/include/asm/tlb.h')
| -rw-r--r-- | arch/sh/include/asm/tlb.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/sh/include/asm/tlb.h b/arch/sh/include/asm/tlb.h index da8fe7ab872..3ed2f7a0541 100644 --- a/arch/sh/include/asm/tlb.h +++ b/arch/sh/include/asm/tlb.h @@ -97,6 +97,22 @@ tlb_end_vma(struct mmu_gather *tlb, struct vm_area_struct *vma) #define tlb_migrate_finish(mm) do { } while (0) +#ifdef CONFIG_CPU_SH4 +extern void tlb_wire_entry(struct vm_area_struct *, unsigned long, pte_t); +extern void tlb_unwire_entry(void); +#else +static inline void tlb_wire_entry(struct vm_area_struct *vma , + unsigned long addr, pte_t pte) +{ + BUG(); +} + +static inline void tlb_unwire_entry(void) +{ + BUG(); +} +#endif /* CONFIG_CPU_SH4 */ + #else /* CONFIG_MMU */ #define tlb_start_vma(tlb, vma) do { } while (0) |