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 _______________________________________________ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
