mm/csky: use general page fault accounting
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. Signed-off-by: Peter Xu <peterx@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Guo Ren <guoren@kernel.org> Link: http://lkml.kernel.org/r/20200707225021.200906-7-peterx@redhat.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -151,7 +151,7 @@ good_area:
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* the fault.
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*/
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fault = handle_mm_fault(vma, address, write ? FAULT_FLAG_WRITE : 0,
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NULL);
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regs);
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if (unlikely(fault & VM_FAULT_ERROR)) {
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if (fault & VM_FAULT_OOM)
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goto out_of_memory;
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@ -161,16 +161,6 @@ good_area:
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goto bad_area;
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BUG();
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}
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if (fault & VM_FAULT_MAJOR) {
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tsk->maj_flt++;
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perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, regs,
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address);
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} else {
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tsk->min_flt++;
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perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, regs,
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address);
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}
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mmap_read_unlock(mm);
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return;
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