The debugging technology based on Linux

While usingPRINTKthe function can easily write messages to the log file or to the console. But a lot of usePRINTKOperations log files or console files with frequent functions can severely affectLinuxDrive development performance. Therefore, this requiresLinuxdrivers used in the development phasePRINTKfunction Output message, in the official releaseLinuxDrive performance may be affected by thePRINTKfunction is removed. Of course, the simplest way we can think of is by deleting it one after the other.PRINTKfunction, but this is a very impractical idea, and it is very cumbersome, and if you want to use it laterPRINTKThe function has a lot of trouble, it will affect the future operation. Want to controlPRINTKoutput, and it is easy to implement, the best way is undoubtedly to useCThe compiler command in the language.

Linux kernel Debugging has been considered by many people to be very difficult. Most people prefer to use the printk function to output debugging information directly. Nor would you like to use a variety of commands for debugging. Because doing so does not necessarily make for more benefits.

The Android emulator can only use the Gdbserver debugger through port mapping . However, in addition to the Development Board can be linked to gdbserver through the IP , but also through the serial port adjustment.

The debugging technology based on Linux