[RFC PATCH v7 1/4] arm64: Make all stack walking functions use arch_stack_walk()

[Mark Brown]

On Thu, Aug 12, 2021 at 08:24:32AM -0500, madvenka at linux.microsoft.com wrote:

> Here is the list of functions:
> 
> 	perf_callchain_kernel()
> 	get_wchan()
> 	return_address()
> 	dump_backtrace()
> 	profile_pc()

I've not actually gone through this properly yet but my first thought is
that for clarity this should be split out into a patch per user plus one
to delete the old interface  - I'd not worry about it unless it needs to
get resubmitted though.

It'll definitely be good to get this done!
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