Re: [PATCH v6 7/7] drivers/perf: Add support for ARMv8.2 Statistical Profiling Extension

2017-10-17 Thread Mark Rutland
On Thu, Oct 12, 2017 at 01:30:38PM +0100, Will Deacon wrote: > The ARMv8.2 architecture introduces the optional Statistical Profiling > Extension (SPE). [...] > This patch adds support for SPE in the form of a new perf driver. > > Cc: Mark Rutland > Cc: Alexander Shishkin > Signed-off-by: Wil

[PATCH v6 7/7] drivers/perf: Add support for ARMv8.2 Statistical Profiling Extension

2017-10-12 Thread Will Deacon
The ARMv8.2 architecture introduces the optional Statistical Profiling Extension (SPE). SPE can be used to profile a population of operations in the CPU pipeline after instruction decode. These are either architected instructions (i.e. a dynamic instruction trace) or CPU-specific uops and the choi