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由 David S. Miller 提交于
If we use this from more than one place, it's better to have helpers instead of twiddling magic constants all over. Add pt_regs_trap_type(), pt_regs_clear_trap_type(), and pt_regs_is_syscall(). Use them in do_signal(). Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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