x86/intel_rdt/mba_sc: Add schemata support

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Currently when user updates the "schemata" with new MBA percentage
values, kernel writes the corresponding bandwidth percentage values to
the IA32_MBA_THRTL_MSR.

When MBA is expressed in MBps, the schemata format is changed to have the
per package memory bandwidth in MBps instead of being specified in
percentage. Do not write the IA32_MBA_THRTL_MSRs when the schemata is
updated as that is handled separately.

Signed-off-by: Vikas Shivappa <vikas.shivappa@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: ravi.v.shankar@intel.com
Cc: tony.luck@intel.com
Cc: fenghua.yu@intel.com
Cc: vikas.shivappa@intel.com
Cc: ak@linux.intel.com
Cc: hpa@zytor.com
Link: https://lkml.kernel.org/r/1524263781-14267-5-git-send-email-vikas.shivappa@linux.intel.com

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Vikas Shivappa 2018-04-20 15:36:19 -07:00 • committed by Thomas Gleixner

parent 1bd2a63b4f

commit 8205a078ba

2 changed files with 20 additions and 6 deletions

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2

arch/x86/kernel/cpu/intel_rdt.c

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24

arch/x86/kernel/cpu/intel_rdt_ctrlmondata.c

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