diff options
Diffstat (limited to 'arch/openrisc/mm/tlb.c')
| -rw-r--r-- | arch/openrisc/mm/tlb.c | 29 |
1 files changed, 13 insertions, 16 deletions
diff --git a/arch/openrisc/mm/tlb.c b/arch/openrisc/mm/tlb.c index dd4f2007f7c9..3115f2e4f864 100644 --- a/arch/openrisc/mm/tlb.c +++ b/arch/openrisc/mm/tlb.c @@ -23,7 +23,6 @@ #include <linux/init.h> #include <asm/tlbflush.h> -#include <asm/pgtable.h> #include <asm/mmu_context.h> #include <asm/spr_defs.h> @@ -129,7 +128,7 @@ void local_flush_tlb_mm(struct mm_struct *mm) /* Was seeing bugs with the mm struct passed to us. Scrapped most of this function. */ - /* Several architctures do this */ + /* Several architectures do this */ local_flush_tlb_all(); } @@ -138,21 +137,28 @@ void local_flush_tlb_mm(struct mm_struct *mm) void switch_mm(struct mm_struct *prev, struct mm_struct *next, struct task_struct *next_tsk) { + unsigned int cpu; + + if (unlikely(prev == next)) + return; + + cpu = smp_processor_id(); + + cpumask_clear_cpu(cpu, mm_cpumask(prev)); + cpumask_set_cpu(cpu, mm_cpumask(next)); + /* remember the pgd for the fault handlers * this is similar to the pgd register in some other CPU's. * we need our own copy of it because current and active_mm * might be invalid at points where we still need to derefer * the pgd. */ - current_pgd[smp_processor_id()] = next->pgd; + current_pgd[cpu] = next->pgd; /* We don't have context support implemented, so flush all * entries belonging to previous map */ - - if (prev != next) - local_flush_tlb_mm(prev); - + local_flush_tlb_mm(prev); } /* @@ -176,12 +182,3 @@ void destroy_context(struct mm_struct *mm) flush_tlb_mm(mm); } - -/* called once during VM initialization, from init.c */ - -void __init tlb_init(void) -{ - /* Do nothing... */ - /* invalidate the entire TLB */ - /* flush_tlb_all(); */ -} |