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SubjectX86_DS config option needs better help text
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Noticed while building a new kernel from latest git:

Debug Store support (X86_DS) [Y/n/?] (NEW) ?

and asking for help just gives

Add support for Debug Store.
This allows the kernel to provide a memory buffer to the hardware
to store various profiling and tracing events.

This doesn't really let me decide if I want it or not. Is there a cost
to enabling this, and if so what? What new feature does this give me?

Is there even a point to making this a user-visible option at all, or
should it just be an internal config variable selected by X86_PTRACE_BTS
and any future users of this?

X86_PTRACE_BTS also could use an improved help text.

No patch, sorry, since I don't actually know for sure what this does.

Thanks,
Roland


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