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2019-08-28docs/perf: Add documentation for the i.MX8 DDR PMUJoakim Zhang1-0/+52
Add some documentation describing the DDR PMU residing in the Freescale i.MDX SoC and its perf driver implementation in Linux. Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com> Signed-off-by: Will Deacon <will@kernel.org>
2019-07-15docs: add SPDX tags to new index filesMauro Carvalho Chehab1-0/+2
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>
2019-07-15docs: perf: move to the admin-guideMauro Carvalho Chehab8-0/+320
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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