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| author | Gerald Schaefer | 2008-04-28 11:13:27 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2008-04-28 17:58:25 +0200 |
| commit | 6d779079bfd1196e077bb1d0a906c37ae770b102 (patch) | |
| tree | 880b17a8c5d4badb548773928868606826899c68 /include/asm-powerpc/hugetlb.h | |
| parent | mempolicy: use struct mempolicy pointer in shmem_sb_info (diff) | |
| download | kernel-qcow2-linux-6d779079bfd1196e077bb1d0a906c37ae770b102.tar.gz kernel-qcow2-linux-6d779079bfd1196e077bb1d0a906c37ae770b102.tar.xz kernel-qcow2-linux-6d779079bfd1196e077bb1d0a906c37ae770b102.zip | |
hugetlbfs: architecture header cleanup
This patch moves all architecture functions for hugetlb to architecture header
files (include/asm-foo/hugetlb.h) and converts all macros to inline functions.
It also removes (!) ARCH_HAS_HUGEPAGE_ONLY_RANGE,
ARCH_HAS_HUGETLB_FREE_PGD_RANGE, ARCH_HAS_PREPARE_HUGEPAGE_RANGE,
ARCH_HAS_SETCLEAR_HUGE_PTE and ARCH_HAS_HUGETLB_PREFAULT_HOOK.
Getting rid of the ARCH_HAS_xxx #ifdef and macro fugliness should increase
readability and maintainability, at the price of some code duplication. An
asm-generic common part would have reduced the loc, but we would end up with
new ARCH_HAS_xxx defines eventually.
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-powerpc/hugetlb.h')
| -rw-r--r-- | include/asm-powerpc/hugetlb.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/include/asm-powerpc/hugetlb.h b/include/asm-powerpc/hugetlb.h new file mode 100644 index 000000000000..f537993c5c87 --- /dev/null +++ b/include/asm-powerpc/hugetlb.h @@ -0,0 +1,37 @@ +#ifndef _ASM_POWERPC_HUGETLB_H +#define _ASM_POWERPC_HUGETLB_H + +#include <asm/page.h> + + +int is_hugepage_only_range(struct mm_struct *mm, unsigned long addr, + unsigned long len); + +void hugetlb_free_pgd_range(struct mmu_gather **tlb, unsigned long addr, + unsigned long end, unsigned long floor, + unsigned long ceiling); + +void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, + pte_t *ptep, pte_t pte); + +pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, + pte_t *ptep); + +/* + * If the arch doesn't supply something else, assume that hugepage + * size aligned regions are ok without further preparation. + */ +static inline int prepare_hugepage_range(unsigned long addr, unsigned long len) +{ + if (len & ~HPAGE_MASK) + return -EINVAL; + if (addr & ~HPAGE_MASK) + return -EINVAL; + return 0; +} + +static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm) +{ +} + +#endif /* _ASM_POWERPC_HUGETLB_H */ |