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authorAshwin Chaugule <ashwin.chaugule@linaro.org>2016-08-16 14:39:38 -0600
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-08-31 01:02:33 +0200
commit5bbb86aa4b8d84395e42cd05448820651d79f349 (patch)
tree31dd18e064b3f61fc969b617b3dba46804e92577 /fs/ocfs2
parentaca314efb177274b458f7e72c5ff375c80a5c2d0 (diff)
ACPI / CPPC: restructure read/writes for efficient sys mapped reg ops
For cases where sys mapped CPC registers need to be accessed frequently, it helps immensly to pre-map them rather than map and unmap for each operation. e.g. case where feedback counters are sys mem map registers. Restructure cpc_read/write and the cpc_regs structure to allow pre-mapping the system addresses and unmap them when the CPU exits. Signed-off-by: Ashwin Chaugule <ashwin.chaugule@linaro.org> Signed-off-by: Prashanth Prakash <pprakash@codeaurora.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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