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    Subject[PATCH v5 20/25] mm/sparc32: Use general page fault accounting
    Date
    Use the general page fault accounting by passing regs into handle_mm_fault().
    It naturally solve the issue of multiple page fault accounting when page fault
    retry happened.

    CC: David S. Miller <davem@davemloft.net>
    CC: sparclinux@vger.kernel.org
    Acked-by: David S. Miller <davem@davemloft.net>
    Signed-off-by: Peter Xu <peterx@redhat.com>
    ---
    arch/sparc/mm/fault_32.c | 11 +----------
    1 file changed, 1 insertion(+), 10 deletions(-)

    diff --git a/arch/sparc/mm/fault_32.c b/arch/sparc/mm/fault_32.c
    index 06af03db4417..8071bfd72349 100644
    --- a/arch/sparc/mm/fault_32.c
    +++ b/arch/sparc/mm/fault_32.c
    @@ -234,7 +234,7 @@ asmlinkage void do_sparc_fault(struct pt_regs *regs, int text_fault, int write,
    * make sure we exit gracefully rather than endlessly redo
    * the fault.
    */
    - fault = handle_mm_fault(vma, address, flags, NULL);
    + fault = handle_mm_fault(vma, address, flags, regs);

    if (fault_signal_pending(fault, regs))
    return;
    @@ -250,15 +250,6 @@ asmlinkage void do_sparc_fault(struct pt_regs *regs, int text_fault, int write,
    }

    if (flags & FAULT_FLAG_ALLOW_RETRY) {
    - if (fault & VM_FAULT_MAJOR) {
    - current->maj_flt++;
    - perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ,
    - 1, regs, address);
    - } else {
    - current->min_flt++;
    - perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN,
    - 1, regs, address);
    - }
    if (fault & VM_FAULT_RETRY) {
    flags |= FAULT_FLAG_TRIED;

    --
    2.26.2
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