diff options
| author | Mikael Starvik <mikael.starvik@axis.com> | 2005-07-27 11:44:42 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-07-27 16:26:01 -0700 |
| commit | 8d20a541b089ecb67a88a673548161b686ed7b85 (patch) | |
| tree | 53bac804d538068c80684becb76cd76937956502 /arch/cris/arch-v10/mm/tlb.c | |
| parent | 21783c9746619a782c21be606f6498bbd4d4615e (diff) | |
[PATCH] CRIS update: SMP
Patches to support SMP.
* Each CPU has its own current_pgd.
* flush_tlb_range is implemented as flush_tlb_mm.
* Atomic operations implemented with spinlocks.
* Semaphores implemented with spinlocks.
Signed-off-by: Mikael Starvik <starvik@axis.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/cris/arch-v10/mm/tlb.c')
| -rw-r--r-- | arch/cris/arch-v10/mm/tlb.c | 49 |
1 files changed, 1 insertions, 48 deletions
diff --git a/arch/cris/arch-v10/mm/tlb.c b/arch/cris/arch-v10/mm/tlb.c index 9d06125ff5a..70a5523eff7 100644 --- a/arch/cris/arch-v10/mm/tlb.c +++ b/arch/cris/arch-v10/mm/tlb.c @@ -139,53 +139,6 @@ flush_tlb_page(struct vm_area_struct *vma, local_irq_restore(flags); } -/* invalidate a page range */ - -void -flush_tlb_range(struct vm_area_struct *vma, - unsigned long start, - unsigned long end) -{ - struct mm_struct *mm = vma->vm_mm; - int page_id = mm->context.page_id; - int i; - unsigned long flags; - - D(printk("tlb: flush range %p<->%p in context %d (%p)\n", - start, end, page_id, mm)); - - if(page_id == NO_CONTEXT) - return; - - start &= PAGE_MASK; /* probably not necessary */ - end &= PAGE_MASK; /* dito */ - - /* invalidate those TLB entries that match both the mm context - * and the virtual address range - */ - - local_save_flags(flags); - local_irq_disable(); - for(i = 0; i < NUM_TLB_ENTRIES; i++) { - unsigned long tlb_hi, vpn; - *R_TLB_SELECT = IO_FIELD(R_TLB_SELECT, index, i); - tlb_hi = *R_TLB_HI; - vpn = tlb_hi & PAGE_MASK; - if (IO_EXTRACT(R_TLB_HI, page_id, tlb_hi) == page_id && - vpn >= start && vpn < end) { - *R_TLB_HI = ( IO_FIELD(R_TLB_HI, page_id, INVALID_PAGEID ) | - IO_FIELD(R_TLB_HI, vpn, i & 0xf ) ); - - *R_TLB_LO = ( IO_STATE(R_TLB_LO, global,no ) | - IO_STATE(R_TLB_LO, valid, no ) | - IO_STATE(R_TLB_LO, kernel,no ) | - IO_STATE(R_TLB_LO, we, no ) | - IO_FIELD(R_TLB_LO, pfn, 0 ) ); - } - } - local_irq_restore(flags); -} - /* dump the entire TLB for debug purposes */ #if 0 @@ -237,7 +190,7 @@ switch_mm(struct mm_struct *prev, struct mm_struct *next, * the pgd. */ - current_pgd = next->pgd; + per_cpu(current_pgd, smp_processor_id()) = next->pgd; /* switch context in the MMU */ |