From: Guo Ren <guoren@xxxxxxxxxxxxxxxxx> Similar to other architectures: In addition to in_atomic, we also need pagefault_disabled() to check. Signed-off-by: Guo Ren <guoren@xxxxxxxxxxxxxxxxx> --- arch/csky/mm/fault.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/csky/mm/fault.c b/arch/csky/mm/fault.c index cecca6729b04..9533bd8d9a6a 100644 --- a/arch/csky/mm/fault.c +++ b/arch/csky/mm/fault.c @@ -143,12 +143,11 @@ asmlinkage void do_page_fault(struct pt_regs *regs) return; } - perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address); /* * If we're in an interrupt or have no user * context, we must not take the fault.. */ - if (in_atomic() || !mm) + if (unlikely(faulthandler_disabled() || !mm)) goto bad_area_nosemaphore; if (user_mode(regs)) @@ -157,6 +156,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs) if (is_write(regs)) flags |= FAULT_FLAG_WRITE; + perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address); retry: mmap_read_lock(mm); vma = find_vma(mm, address); -- 2.17.1
