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

* Li Zefan <lizf@cn.fujitsu.com> wrote:

> Ingo Molnar wrote:
> > * Li Zefan <lizf@cn.fujitsu.com> 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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