linux-kernel - [PATCH 0/8 V1] x86/intel_rdt: Memory b/w Allocation support

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Message-Id: <1484076788-25385-1-git-send-email-vikas.shivappa@linux.intel.com>
Date:   Tue, 10 Jan 2017 11:33:00 -0800
From:   Vikas Shivappa <vikas.shivappa@...ux.intel.com>
To:     vikas.shivappa@...el.com, linux-kernel@...r.kernel.org
Cc:     x86@...nel.org, hpa@...or.com, tglx@...utronix.de,
        mingo@...nel.org, peterz@...radead.org, ravi.v.shankar@...el.com,
        tony.luck@...el.com, fenghua.yu@...el.com, h.peter.anvin@...el.com,
        vikas.shivappa@...ux.intel.com
Subject: [PATCH 0/8 V1] x86/intel_rdt: Memory b/w Allocation support

Memory b/w allocation(MBA) is part of the Intel Resource Director
Technology (RDT). RDT helps monitor and share processor shared
resources.  MBA helps enforce a limit on the memory b/w, threads can use
when they are scheduled. OS does the enforcement using MSR(model
specific register) interface and mapping the threads to architecture
specific CLOSids(class of service IDs) just like the cache allocation
technology(CAT). The interface is the resctrl just like CAT.

This can be used along with MBM (memory b/w monitoring) and cache
allocation to control/restrict the applications cache and memory
resources as per the QoS or other performance requirements.  Use cases
could be large serverclusters, VM, clould and container based services
where the admin or orchestration tools can use this framework to
manage/allocate these processor shared resources like other memory/cpu
resources to provide QoS guarentees.

Sending the first patch series to support the feature. Patches are based
on on 4.10-rc2.

[PATCH 1/8] Documentation, x86: Documentation for Intel Mem b/w
[PATCH 2/8] x86/intel_rdt/mba: Generalize the naming to get ready for
[PATCH 3/8] x86/intel_rdt/mba: Improvements to handle more RDT
[PATCH 4/8] x86/intel_rdt/mba: Memory b/w allocation feature detect
[PATCH 5/8] x86/intel_rct/mba: Add MBA structures and initialize MBA
[PATCH 6/8] x86/intel_rdt/mba: Add info directory files for MBA
[PATCH 7/8] x86/intel_rdt/mba: Add schemata file support for MBA
[PATCH 8/8] x86/intel_rdt: rmdir,umount and hotcpu updates for MBA