On Fri, 19 Jan 2024 16:08:24 +0800 Huang Yiwei <quic_hyiwei@xxxxxxxxxxx> wrote: > - ftrace_dump_on_oops[=orig_cpu] > + ftrace_dump_on_oops[=orig_cpu | =<instance>] I wonder if we should have it be: ftrace_dump_on_oops[=orig_cpu | =<instance> | =<instance>:orig_cpu ] Then last would be to only print out a specific CPU trace of the given instance. And if we really want to be fancy! ftrace_dump_on_opps[=orig_cpu | =<instance> | =orig_cpu:<instance> ][,<instance> | ,<instance>:orig_cpu] That would allow dumping more than one instance. If you want to dump the main buffer and an instance foo: ftrace_dump_on_opps,foo Where the ',' says to dump the top instance as well as the foo instance. -- Steve > [FTRACE] will dump the trace buffers on oops. > - If no parameter is passed, ftrace will dump > - buffers of all CPUs, but if you pass orig_cpu, it will > + If no parameter is passed, ftrace will dump global > + buffers of all CPUs, if you pass orig_cpu, it will > dump only the buffer of the CPU that triggered the > - oops. > + oops, or specific instance will be dumped if instance > + name is passed. >
