Re: [RFC PATCH 2/9] perf: Add ability to dump user regs

[Peter Zijlstra]

On Wed, 2010-10-13 at 07:06 +0200, Frederic Weisbecker wrote:
> Add new PERF_SAMPLE_UREGS to perf sample type. This will dump the
> user space context as it was before the user entered the kernel for
> whatever reason.
> 
> This is going to be useful to bring Dwarf CFI based stack unwinding
> on top of samples.

This doesn't address any of the issues that were raised previously.

There's a reason we don't have PERF_SAMPLE_*REGS like things.

See: http://lkml.org/lkml/2010/3/3/308
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