projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 48483760 AK |
1 | #include <linux/mm.h> |
| 2 | #include <linux/hugetlb.h> | |
| 3 | #include <asm/pgtable.h> | |
| 4 | #include <asm/pgalloc.h> | |
| 5 | #include <asm/cacheflush.h> | |
| 6 | #include <asm/machdep.h> | |
| 7 | #include <asm/mman.h> | |
| fbfa26d8 | 8 | #include <asm/tlb.h> |
| 48483760 AK |
9 | |
| 10 | void radix__flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr) | |
| 11 | { | |
| fbfa26d8 | 12 | int psize; |
| 48483760 AK |
13 | struct hstate *hstate = hstate_file(vma->vm_file); |
| 14 | ||
| fbfa26d8 AK |
15 | psize = hstate_get_psize(hstate); |
| 16 | radix__flush_tlb_page_psize(vma->vm_mm, vmaddr, psize); | |
| 48483760 AK |
17 | } |
| 18 | ||
| 19 | void radix__local_flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr) | |
| 20 | { | |
| fbfa26d8 | 21 | int psize; |
| 48483760 AK |
22 | struct hstate *hstate = hstate_file(vma->vm_file); |
| 23 | ||
| fbfa26d8 AK |
24 | psize = hstate_get_psize(hstate); |
| 25 | radix__local_flush_tlb_page_psize(vma->vm_mm, vmaddr, psize); | |
| 48483760 AK |
26 | } |
| 27 | ||
| 28 | /* | |
| 29 | * A vairant of hugetlb_get_unmapped_area doing topdown search | |
| 30 | * FIXME!! should we do as x86 does or non hugetlb area does ? | |
| 31 | * ie, use topdown or not based on mmap_is_legacy check ? | |
| 32 | */ | |
| 33 | unsigned long | |
| 34 | radix__hugetlb_get_unmapped_area(struct file *file, unsigned long addr, | |
| 35 | unsigned long len, unsigned long pgoff, | |
| 36 | unsigned long flags) | |
| 37 | { | |
| 38 | struct mm_struct *mm = current->mm; | |
| 39 | struct vm_area_struct *vma; | |
| 40 | struct hstate *h = hstate_file(file); | |
| 41 | struct vm_unmapped_area_info info; | |
| 42 | ||
| 43 | if (len & ~huge_page_mask(h)) | |
| 44 | return -EINVAL; | |
| 45 | if (len > TASK_SIZE) | |
| 46 | return -ENOMEM; | |
| 47 | ||
| 48 | if (flags & MAP_FIXED) { | |
| 49 | if (prepare_hugepage_range(file, addr, len)) | |
| 50 | return -EINVAL; | |
| 51 | return addr; | |
| 52 | } | |
| 53 | ||
| 54 | if (addr) { | |
| 55 | addr = ALIGN(addr, huge_page_size(h)); | |
| 56 | vma = find_vma(mm, addr); | |
| 57 | if (TASK_SIZE - len >= addr && | |
| 58 | (!vma || addr + len <= vma->vm_start)) | |
| 59 | return addr; | |
| 60 | } | |
| 61 | /* | |
| 62 | * We are always doing an topdown search here. Slice code | |
| 63 | * does that too. | |
| 64 | */ | |
| 65 | info.flags = VM_UNMAPPED_AREA_TOPDOWN; | |
| 66 | info.length = len; | |
| 67 | info.low_limit = PAGE_SIZE; | |
| 68 | info.high_limit = current->mm->mmap_base; | |
| 69 | info.align_mask = PAGE_MASK & ~huge_page_mask(h); | |
| 70 | info.align_offset = 0; | |
| 71 | return vm_unmapped_area(&info); | |
| 72 | } |