On Fri, 19 Jan 2024 16:08:24 +0800
Huang Yiwei <[email protected]> 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.
>
