A. Linux kernel printk mechanism
1.1. Android Linxu kernel kernel is based therefore it is common to log mechanism performed using the output printk Log Android kernel function. And c language similar to printf, printk provide formatted input function, at the same time, it also has the characteristics of all LOG mechanisms - to provide the log level misplaced functions. printk provides 8 log level (defined in detail include / linux / kern_levels.h) is:
1.2 The simplest use of printk:
. 1.3 printk output format to use with:
Two output print information in the kernel where adb connect
Android system, log information is stored in the output printk / proc / kmsg, to view the / proc / kmsg content, only enter the following command input on the command line
