linux-kernel - perf: Some improvements for Skylake perf

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Message-Id: <1444952280-24184-1-git-send-email-andi@firstfloor.org>
Date:	Thu, 15 Oct 2015 16:37:56 -0700
From:	Andi Kleen <andi@...stfloor.org>
To:	peterz@...radead.org
Cc:	linux-kernel@...r.kernel.org
Subject: perf: Some improvements for Skylake perf

This patchkit improves the Skylake core PMU perf port

- Fix problems with LBR freezing with a new APIC ack sequence
- Improve performance and accuracy of the NMI handler with counter freezing
- Improve sampling quality with cycles:pp

The last feature could be used on other CPUs too, but for now it's only
enabled on Skylake.

-Andi
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