Joe Perches <j...@perches.com> wrote: > > Let's see... If the machine panics whilst I'm developing stuff (quite > > likely if something goes wrong in BH context), how do I get at the > > function tracing log to find out why it panicked if the log is then > > lost? With the serial console, at least I automatically capture the > > output of kenter and co.. > > But you also don't get a bunch of other useful stuff. > > btw: there is ftrace_dump_on_oops > > https://lwn.net/Articles/366796/
Cute. How do I get at the argument values and suchlike that kenter() and co print? I presume I would need to replace any kenter() or suchlike that printed more than just the address with a tracing hook? David