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| author | Robin Murphy <robin.murphy@arm.com> | 2020-09-18 15:28:38 +0200 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2020-09-28 19:50:20 +0200 |
| commit | 0ba64770a2f2e5a104bf835e133d78d3f82287ad (patch) | |
| tree | a6df3bbd9d3c7956c140ad4a85ebfa5639bff772 /drivers/thunderbolt/nvm.c | |
| parent | perf: Add Arm CMN-600 DT binding (diff) | |
| download | linux-0ba64770a2f2e5a104bf835e133d78d3f82287ad.tar.xz linux-0ba64770a2f2e5a104bf835e133d78d3f82287ad.zip | |
perf: Add Arm CMN-600 PMU driver
Initial driver for PMU event counting on the Arm CMN-600 interconnect.
CMN sports an obnoxiously complex distributed PMU system as part of
its debug and trace features, which can do all manner of things like
sampling, cross-triggering and generating CoreSight trace. This driver
covers the PMU functionality, plus the relevant aspects of watchpoints
for simply counting matching flits.
Tested-by: Tsahi Zidenberg <tsahee@amazon.com>
Tested-by: Tuan Phan <tuanphan@os.amperecomputing.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
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