Re: [PATCH v3] perf: honoring the architectural performance monitoring version

[Peter Zijlstra]

On Mon, Jun 15, 2015 at 04:22:32PM +0200, Imre Palik wrote:
> From: "Palik, Imre" <imrep@xxxxxxxxx>
> 
> Architectural performance monitoring version 1 doesn't support fixed
> counters.  Currently, even if a hypervisor advertises support for
> architectural performance monitoring version 1, perf may still tries to use
> the fixed counters, as the constraints are set up based on the CPU model.
> 
> This patch ensures that perf honors the architectural performance
> monitoring version returned by CPUID, and it only uses the fixed counters
> for version two and above.
> 
> Some of the ideas in this patch are coming from Peter Zijlstra.

What's the difference from -v2? I'm not really seeing it.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/