diff options
Diffstat (limited to 'arch/openrisc/mm')
| -rw-r--r-- | arch/openrisc/mm/fault.c | 9 | ||||
| -rw-r--r-- | arch/openrisc/mm/tlb.c | 17 |
2 files changed, 16 insertions, 10 deletions
diff --git a/arch/openrisc/mm/fault.c b/arch/openrisc/mm/fault.c index d2224ccca294..ca97d9baab51 100644 --- a/arch/openrisc/mm/fault.c +++ b/arch/openrisc/mm/fault.c @@ -15,6 +15,7 @@ #include <linux/interrupt.h> #include <linux/extable.h> #include <linux/sched/signal.h> +#include <linux/perf_event.h> #include <linux/uaccess.h> #include <asm/siginfo.h> @@ -103,6 +104,8 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long address, if (in_interrupt() || !mm) goto no_context; + perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address); + retry: mmap_read_lock(mm); vma = find_vma(mm, address); @@ -159,7 +162,7 @@ good_area: * the fault. */ - fault = handle_mm_fault(vma, address, flags); + fault = handle_mm_fault(vma, address, flags, regs); if (fault_signal_pending(fault, regs)) return; @@ -176,10 +179,6 @@ good_area: if (flags & FAULT_FLAG_ALLOW_RETRY) { /*RGD modeled on Cris */ - if (fault & VM_FAULT_MAJOR) - tsk->maj_flt++; - else - tsk->min_flt++; if (fault & VM_FAULT_RETRY) { flags |= FAULT_FLAG_TRIED; diff --git a/arch/openrisc/mm/tlb.c b/arch/openrisc/mm/tlb.c index 4b680aed8f5f..2b6feabf6381 100644 --- a/arch/openrisc/mm/tlb.c +++ b/arch/openrisc/mm/tlb.c @@ -137,21 +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); } /* |