Thanks your replies! I found the target. 2013/12/5 上午9:34 於 "Peter Teoh" <[email protected]> 寫道：
> yes, exactly - what u are describing is called "kdb". don't mixed up > with "kgdb". > > > kdb: this is debugging on the same computer - so no serial ports > connection are needed. once exception occurred, you will be popped into a > special debugger screen. problem is that now this debugger is running in > kernel mode, inside the same computer that have the kernel module crashing, > and so everything stop running, only kdb is running. > > (NOTE: i played with this almost like 8 or 9 years ago, and it seemed > now kdb is not updated any more.) > > kgdb: this always require TWO computer: host + debuggee. kgdb is > running inside the debuggee whose kernel has crashed, and gdb is running in > host. normally connected via serial port. normally the preferred way is > to run the kernel to be debugged inside the VirtualBox, or VMWare, and then > gdb host is the virtual machine host. > > diff between the two is explained here: > > https://www.kernel.org/pub/linux/kernel/people/jwessel/kdb/CompileKDB.html > > and setup are here (mainly for kgdb): > > http://elinux.org/KDB > > http://allmybrain.com/2010/04/29/debugging-linux-kernel-modules-with-virtualbox-and-kgdb/ > http://www.linuxforu.com/2011/03/kgdb-with-virtualbox-debug-live-kernel/ > > have fun. > > > > > On Tue, Dec 3, 2013 at 8:35 PM, 乃宏周 <[email protected]> wrote: > >> For debugging purpose, I want something like 'getchar()' that can pause >> execution in the module code. Do any candidates I can choose? >> >> _______________________________________________ >> Kernelnewbies mailing list >> [email protected] >> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies >> >> -- > Regards, > Peter Teoh >
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