On 09/03, Frank Ch. Eigler wrote: > > Oleg Nesterov <o...@redhat.com> writes: > > > [...] To the point, I had to add printk's to utrace.c to understand > > what is wrong. Hopefully tomorrow. > > You might wish to try out systemtap for such purposes. It's easy to > insert printk-like tracing at almost any point; monitor variables for > changes, pretty-print structs, etc.
Probably I should try the new versions... Last time I tried systemtap more than year ago. It didn't work for me without the "properly installed" kernel/etc which I don't have. And, I doubt I can insert the probe at the needed line without DEBUG_INFO. > No recompilation/reboot. CONFIG_KPROBE ;) But anyway I agree, systemtap is the great tool. Oleg.
