mm/sparc64: use general page fault accounting (f08147df) · Commits · 戴 / test

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:

David S. Miller <davem@davemloft.net> Link: http://lkml.kernel.org/r/20200707225021.200906-22-peterx@redhat.com Signed-off-by:

Linus Torvalds <torvalds@linux-foundation.org>

arch/sparc/mm/fault_64.c

+1 −10

Original line number	Diff line number	Diff line
		@@ -422,7 +422,7 @@ good_area:
		goto bad_area;
		}

		fault = handle_mm_fault(vma, address, flags, NULL);
		fault = handle_mm_fault(vma, address, flags, regs);

		if (fault_signal_pending(fault, regs))
		goto exit_exception;
		@@ -438,15 +438,6 @@ good_area:
		}

		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;

Admin message