Messages in this thread | | | Date | Wed, 4 Jan 2017 11:37:13 +0100 | From | Peter Zijlstra <> | Subject | Re: [RFC PATCH 09/10] drivers/perf: Add support for ARMv8.2 Statistical Profiling Extension |
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On Tue, Jan 03, 2017 at 06:10:26PM +0000, Will Deacon wrote: > The ARMv8.2 architecture introduces the Statistical Profiling Extension > (SPE). SPE provides a way to configure and collect profiling samples > from the CPU in the form of a trace buffer, which can be mapped directly > into userspace using the perf AUX buffer infrastructure. > > This patch adds support for SPE in the form of a new perf driver. >
Can you give a little high level overview of what exactly SPE is?
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