[PATCH] arm: perf: Fix userspace call stack walking

[Russell King - ARM Linux]

On Thu, Oct 01, 2015 at 10:26:47AM -0700, Drew Richardson wrote:
> The layout of stack frames has changed over time. Testing using a
> arm-linux-gnueabi gcc-4.2 from 2007 the original code didn't work but
> this new code does. It also works with clang as well as newer versions
> of gcc.

Can you point to a modern ARM distribution where perf actually works with
calltraces into userspace?

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