diff options
| author | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-22 10:56:57 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-22 10:56:57 -0800 |
| commit | d04ef3a795b3b7b376a02713ed5e211e9ae1f917 (patch) | |
| tree | 837da034751a2fc1be0fc5a105c218d41a498eb6 /arch/sparc64/mm/hugetlbpage.c | |
| parent | 36177ba655c238e33400cc2837a28720b62784bd (diff) | |
| parent | dcc1e8dd88d4bc55e32a26dad7633d20ffe606d2 (diff) | |
Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
[SPARC64]: Add a secondary TSB for hugepage mappings.
[SPARC]: Respect vm_page_prot in io_remap_page_range().
Diffstat (limited to 'arch/sparc64/mm/hugetlbpage.c')
| -rw-r--r-- | arch/sparc64/mm/hugetlbpage.c | 28 |
1 files changed, 19 insertions, 9 deletions
diff --git a/arch/sparc64/mm/hugetlbpage.c b/arch/sparc64/mm/hugetlbpage.c index 280dc7958a13..074620d413d4 100644 --- a/arch/sparc64/mm/hugetlbpage.c +++ b/arch/sparc64/mm/hugetlbpage.c @@ -199,13 +199,11 @@ pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr) pte_t *pte = NULL; pgd = pgd_offset(mm, addr); - if (pgd) { - pud = pud_offset(pgd, addr); - if (pud) { - pmd = pmd_alloc(mm, pud, addr); - if (pmd) - pte = pte_alloc_map(mm, pmd, addr); - } + pud = pud_alloc(mm, pgd, addr); + if (pud) { + pmd = pmd_alloc(mm, pud, addr); + if (pmd) + pte = pte_alloc_map(mm, pmd, addr); } return pte; } @@ -231,13 +229,14 @@ pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr) return pte; } -#define mk_pte_huge(entry) do { pte_val(entry) |= _PAGE_SZHUGE; } while (0) - void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t entry) { int i; + if (!pte_present(*ptep) && pte_present(entry)) + mm->context.huge_pte_count++; + for (i = 0; i < (1 << HUGETLB_PAGE_ORDER); i++) { set_pte_at(mm, addr, ptep, entry); ptep++; @@ -253,6 +252,8 @@ pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, int i; entry = *ptep; + if (pte_present(entry)) + mm->context.huge_pte_count--; for (i = 0; i < (1 << HUGETLB_PAGE_ORDER); i++) { pte_clear(mm, addr, ptep); @@ -290,6 +291,15 @@ static void context_reload(void *__data) void hugetlb_prefault_arch_hook(struct mm_struct *mm) { + struct tsb_config *tp = &mm->context.tsb_block[MM_TSB_HUGE]; + + if (likely(tp->tsb != NULL)) + return; + + tsb_grow(mm, MM_TSB_HUGE, 0); + tsb_context_switch(mm); + smp_tsb_sync(mm); + /* On UltraSPARC-III+ and later, configure the second half of * the Data-TLB for huge pages. */ |