April 20, 2018
4:30 p.m.
On 2018-04-20 17:44, Greg KH wrote: [...]
Second, modern gdb is perfectly able to deal with -O2 optimization, especially if you build with -g. (In the kernel build, CONFIG_DEBUG_INFO=y will do the right thing for this).
I don't think so. According to my experience, GDB is not good enough to deal with -O2 optimization.
Maybe my gdb is not modern enough? I am using gdb7.11 (Ubuntu 7.11.1-0ubuntu1~16.5)
That is an old version of gdb, why not try a more modern one?
Whoop, don't know that...
Also, why do you even need to use a debugger on a kernel image?
no, usually printk is enough. Yubin