On 22/09/2022 15:04, Will Deacon wrote:

On Thu, Sep 01, 2022 at 02:26:56PM +0100, James Clark wrote:

quoted

I'm resubmitting this with a few of the changes suggested by Will on V2.

I haven't made any changes regarding the open questions about the
discoverability or saving the new reg and passing to output_sample()
because I think it's best to be consistent with the implementations on
other platforms first. I have explained in more detail on v2 [1].

[1]: https://lore.kernel.org/lkml/5fcf1a6f-c8fb-c296-992e-18aae8874095@arm.com/ (local)

Fair enough, I can't argue against being consistent.

Given that this exposes subtle new user ABI, do we have any coverage in
the selftests? If not, please could you add something?

Thanks, I will do that. I assume you mean the self tests in
tools/perf/tests and not some non Perf tests?

Thanks,

Will

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