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



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