Re: [PATCH] tracing/fastboot: document the need of initcall_debug

[Ingo Molnar]

* Li Zefan <lizf@xxxxxxxxxxxxxx> wrote:

> Ingo Molnar wrote:
> > * Li Zefan <lizf@xxxxxxxxxxxxxx> wrote:
> > 
> >> To use boot tracer, one should pass initcall_debug as well as
> >> ftrace=initcall to the command line.
> > 
> > I think both should be auto-enabled if BOOT_TRACER is enabled, for 
> > ease of use - agreed?
> 
> If both are auto-enabled, we'll always do boot tracing. But we 
> want BOOT_TRACER to be enabled and only enable boot tracing when 
> it's needed.
> 
> But maybe we can make ftrace=initcall implies initcall_debug=1?

That's reasonable indeed.

	Ingo
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