Question

如何在bootlog中获取时间戳，如下所示？

[Tue Mar 19 13:46:28.140 2013] U-Boot 1.4.0XXXXXX (Mar 04 2013 - 08:41:02)MPC83XX  
[Tue Mar 19 13:46:28.156 2013]  
[Tue Mar 19 13:46:28.156 2013] Reset Status:  
[Tue Mar 19 13:46:28.156 2013]   
[Tue Mar 19 13:46:28.156 2013] CPU:   e300c3, MPC8308, Rev: 1.0 at 333.333 MHz, CSB:     133.333 MHz  
[Tue Mar 19 13:46:28.187 2013] Board: XXXXX  
[Tue Mar 19 13:46:28.187 2013] I2C:   ready  
[Tue Mar 19 13:46:28.187 2013] ZDRAM:  256 MiB (DDR2, 32-bit, ECC off, 266.667 MHz)  
[Tue Mar 19 13:46:28.203 2013] ZDRAM Test Started ... DRAM Test Passed.  
[Tue Mar 19 13:46:28.312 2013] ZFlash: 4 MiB  
[Tue Mar 19 13:46:28.312 2013] ZNAND:  512 MiB  
[Tue Mar 19 13:46:28.312 2013] Using default environment  
.  
.  
[Tue Mar 19 13:49:58.640 2013] Jan  1 04:41:28 localhost kernel: device xxxx-1 entered promiscuous mode  
[Tue Mar 19 13:49:58.656 2013] Jan  1 04:41:28 localhost kernel: device xxxx-2 entered promiscuous mode  
[Tue Mar 19 13:49:58.671 2013] Jan  1 04:41:28 localhost kernel: device xxxx-3 entered promiscuous mode  
[Tue Mar 19 13:49:58.687 2013] Jan  1 04:41:28 localhost kernel: device xxxx-4 entered promiscuous mode  
[Tue Mar 19 13:49:58.703 2013] Jan  1 04:41:32 localhost kernel: linux-xxx_port_mode(0, 2)  
[Tue Mar 19 13:49:58.734 2013] Jan  1 04:41:32 localhost kernel: linux-xxx interface [2]  
[Tue Mar 19 13:49:58.750 2013] Jan  1 04:41:48 localhost kernel: xxxx_ioctl(284): xxx.  
[Tue Mar 19 13:49:58.765 2013] root@localhost:/root>

如何获取启动日志和内核初始化日志，直到登录提示符？
有些专家早先在我的项目中记录了上述产品有人可以帮助完成这项工作吗？

Answer 1

您还可以查看内核配置参数CONFIG_PRINTK_TIME。如果使用此支持编译内核（CONFIG_PRINTK_TIME = y），内核将为其生成的每个内核消息添加准确的时间戳。输出如下所示：

[    2.226780] NET: Registered protocol family 2
[    2.227345] TCP established hash table entries: 8192 (order: 4, 65536 bytes)

祝你好运!!

Answer 2

您可能想要使用grabserial。它允许您为来自引导系统的串行线路的每条消息加时间戳。您甚至可以重置与字符串匹配的基准时间。

Answer 3

据我所知，人类可读的日期和时间是由syslog而不是内核生成的。通常情况下，linux内核只会在重启后为您提供时间戳。您可以更改内核源代码并使用getnstimeofday（）函数。

如何在登录提示之前获取启动日志消息中的时间戳？

3 个答案: