求助！

lily_nupt

请问各位：
   在linux系统启动时，内核有如下信息：
eth0: Setting half-duplex based on auto-negotiated partner ability 0000.
NETDEV WATCHDOG: eth0: transmit timed out
eth0: Tx queue start entry 4  dirty entry 0.
eth0:  Tx descriptor 0 is 00002000. (queue head)
eth0:  Tx descriptor 1 is 00002000.
eth0:  Tx descriptor 2 is 00002000.
eth0:  Tx descriptor 3 is 00002000.
eth0: Setting half-duplex based on auto-negotiated partner ability 0000.
但是没能在内核源码找到打印这些信息的源码位置
所以看不出出了什么问题
大家能帮帮我么？