[PATCH 00/32] Enable Intel Resource Allocation in Resource Director Technology

From: Fenghua Yu
Date: Tue Jul 12 2016 - 18:02:31 EST

From: Fenghua Yu <fenghua.yu@xxxxxxxxx>

L3 cache allocation allows per task control over which areas of the last
level cache are available for allocation. It is the first resource that
can be controlled as part of Intel Resource Director Technology (RDT).
This patch series creates a framework that will make it easy to add
additional resources (like L2 cache).

See Intel Software Developer manual volume 3, chapter 17 for architectural
details. Also Documentation/x86/intel_rdt.txt and
Documentation/x86/intel_rdt_ui.txt (in parts 0001 & 0013 of this patch

A previous implementation used "cgroups" as the user interface. This was

The new interface:
1) Aligns better with the h/w capabilities provided
2) Gives finer control (per thread instead of process)
3) Gives control over kernel threads as well as user threads
4) Allows resource allocation policies to be tied to certain cpus across
all contexts (tglx request)

Note that parts 1-12 are largely unchanged from what was posted last year
except for the removal of cgroup pieces and dynamic CAT/CDP switch.

Fenghua Yu (20):
Documentation, x86: Documentation for Intel resource allocation user
x86/cpufeatures: Get max closid and max cbm len and clean feature
comments and code
cacheinfo: Introduce cache id
Documentation, ABI: Add a document entry for cache id
x86, intel_cacheinfo: Enable cache id in x86
drivers/base/cacheinfo.c: Export some cacheinfo functions for others
to use
sched.h: Add rg_list and rdtgroup in task_struct
magic number for rscctrl file system
x86/intel_rdt.h: Header for inter_rdt.c
x86/intel_rdt_rdtgroup.h: Header for user interface
x86/intel_rdt.c: Extend RDT to per cache and per resources
Task fork and exit for rdtgroup
x86/intel_rdt_rdtgroup.c: User interface for RDT
x86/intel_rdt_rdtgroup.c: Create info directory
x86/intel_rdt_rdtgroup.c: Implement rscctrl file system commands
x86/intel_rdt_rdtgroup.c: Read and write cpus
x86/intel_rdt_rdtgroup.c: Tasks iterator and write
x86/intel_rdt_rdtgroup.c: Process schemas input from rscctrl interface
MAINTAINERS: Add maintainer for Intel RDT resource allocation
x86/Makefile: Build intel_rdt_rdtgroup.c

Vikas Shivappa (12):
x86/intel_rdt: Cache Allocation documentation
x86/intel_rdt: Add support for Cache Allocation detection
x86/intel_rdt: Add Class of service management
x86/intel_rdt: Add L3 cache capacity bitmask management
x86/intel_rdt: Implement scheduling support for Intel RDT
x86/intel_rdt: Hot cpu support for Cache Allocation
x86/intel_rdt: Intel haswell Cache Allocation enumeration
x86/intel_rdt: Intel Code Data Prioritization detection
x86/intel_rdt: Adds support to enable Code Data Prioritization
x86/intel_rdt: Class of service and capacity bitmask management for
x86/intel_rdt: Hot cpu update for code data prioritization

Documentation/ABI/testing/sysfs-devices-system-cpu | 17 +
Documentation/x86/intel_rdt.txt | 109 +
Documentation/x86/intel_rdt_ui.txt | 268 +++
arch/x86/Kconfig | 12 +
arch/x86/events/intel/cqm.c | 26 +-
arch/x86/include/asm/cpufeature.h | 2 +
arch/x86/include/asm/cpufeatures.h | 13 +-
arch/x86/include/asm/intel_rdt.h | 139 ++
arch/x86/include/asm/intel_rdt_rdtgroup.h | 229 ++
arch/x86/include/asm/pqr_common.h | 27 +
arch/x86/include/asm/processor.h | 3 +
arch/x86/kernel/cpu/Makefile | 2 +
arch/x86/kernel/cpu/common.c | 19 +
arch/x86/kernel/cpu/intel_cacheinfo.c | 20 +
arch/x86/kernel/cpu/intel_rdt.c | 838 ++++++++
arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 2230 ++++++++++++++++++++
arch/x86/kernel/process_64.c | 6 +
drivers/base/cacheinfo.c | 7 +-
include/linux/cacheinfo.h | 5 +
include/linux/sched.h | 4 +
include/uapi/linux/magic.h | 2 +
kernel/exit.c | 2 +
kernel/fork.c | 4 +
24 files changed, 3965 insertions(+), 27 deletions(-)
create mode 100644 Documentation/x86/intel_rdt.txt
create mode 100644 Documentation/x86/intel_rdt_ui.txt
create mode 100644 arch/x86/include/asm/intel_rdt.h
create mode 100644 arch/x86/include/asm/intel_rdt_rdtgroup.h
create mode 100644 arch/x86/include/asm/pqr_common.h
create mode 100644 arch/x86/kernel/cpu/intel_rdt.c
create mode 100644 arch/x86/kernel/cpu/intel_rdt_rdtgroup.c