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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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Sphinx is currently outputting a warning where
the file 'imx-ddr.rst' is not included in the
documentation index. Additionally, the code
highlighting and doc formatting can be slightly
improved.
Signed-off-by: Adam Zerella <adam.zerella@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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All those new files I added are under GPL v2.0 license.
Add the corresponding SPDX headers to them.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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The perf infrastructure is used for userspace to track issues.
At least a good part of what's described here is related to
it.
So, add it to the admin-guide.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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