Hello,
I discussed with Frank and other kernel developers last week at OSSJ 2019.
Eventually, I decided to leave from devicetree, because it can unstabilize
current devicetree desgin and policy. Instead, aim to introduce a new
generic structured kernel cmdline, something like "configtree".
I thought JSON or other generic data format, but they look a bit bloated
for my purpose. I just need something like "extended hierarchical kernel
cmdline". For example,
ftrace {
options = "sym-addr"
events = "initcall:*"
tp-printk
event.0 {
name = "tasl:task_newtask"
filter = "pid < 128"
}
}
Which can be written as
ftrace.options="sym-addr" ftrace.events="initcall:*" ftrace.tp-printk ftrace.event.0.name="tasl:task_newtask" ftrace.event.0.filter="pid < 128"
on current kernel cmdline.
So, the parameters are linearly extended from current kernel cmdline.
Kernel internal APIs must be able to handle both of current cmdline
key-values and configtree key-values.
Thank you,
--
Masami Hiramatsu <mhiramat@xxxxxxxxxx>
