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Quentin Perret 2a557de670 UPSTREAM: sched/topology: Introduce a sysctl for Energy Aware Scheduling
In its current state, Energy Aware Scheduling (EAS) starts automatically
on asymmetric platforms having an Energy Model (EM). However, there are
users who want to have an EM (for thermal management for example), but
don't want EAS with it.

In order to let users disable EAS explicitly, introduce a new sysctl
called 'sched_energy_aware'. It is enabled by default so that EAS can
start automatically on platforms where it makes sense. Flipping it to 0
rebuilds the scheduling domains and disables EAS.

Bug: 120440300
Signed-off-by: Quentin Perret <quentin.perret@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: adharmap@codeaurora.org
Cc: chris.redpath@arm.com
Cc: currojerez@riseup.net
Cc: dietmar.eggemann@arm.com
Cc: edubezval@gmail.com
Cc: gregkh@linuxfoundation.org
Cc: javi.merino@kernel.org
Cc: joel@joelfernandes.org
Cc: juri.lelli@redhat.com
Cc: morten.rasmussen@arm.com
Cc: patrick.bellasi@arm.com
Cc: pkondeti@codeaurora.org
Cc: rjw@rjwysocki.net
Cc: skannan@codeaurora.org
Cc: smuckle@google.com
Cc: srinivas.pandruvada@linux.intel.com
Cc: thara.gopinath@linaro.org
Cc: tkjos@google.com
Cc: valentin.schneider@arm.com
Cc: vincent.guittot@linaro.org
Cc: viresh.kumar@linaro.org
Link: https://lkml.kernel.org/r/20181203095628.11858-11-quentin.perret@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
(cherry picked from commit 8d5d0cfb63)
Signed-off-by: Quentin Perret <qperret@google.com>
Change-Id: I4ca842d07b82869cfab7542c8c4351f631e1024d
2020-02-19 10:50:59 +00:00
arch This is the 4.19.104 stable release 2020-02-19 08:31:05 +01:00
block This is the 4.19.101 stable release 2020-02-02 20:22:38 +00:00
certs export.h: remove VMLINUX_SYMBOL() and VMLINUX_SYMBOL_STR() 2018-08-22 23:21:44 +09:00
crypto This is the 4.19.103 stable release 2020-02-11 15:05:03 -08:00
Documentation UPSTREAM: sched/topology: Introduce a sysctl for Energy Aware Scheduling 2020-02-19 10:50:59 +00:00
drivers This is the 4.19.104 stable release 2020-02-19 08:31:05 +01:00
firmware Fix built-in early-load Intel microcode alignment 2020-01-23 08:21:29 +01:00
fs This is the 4.19.104 stable release 2020-02-19 08:31:05 +01:00
include UPSTREAM: sched/topology: Introduce a sysctl for Energy Aware Scheduling 2020-02-19 10:50:59 +00:00
init ANDROID: init: kconfig: Only allow sched tune if !uclamp 2020-02-01 15:03:17 +00:00
ipc This is the 4.19.103 stable release 2020-02-11 15:05:03 -08:00
kernel UPSTREAM: sched/topology: Introduce a sysctl for Energy Aware Scheduling 2020-02-19 10:50:59 +00:00
lib UPSTREAM: lib/test_stackinit: Handle Clang auto-initialization pattern 2020-02-13 16:36:27 +01:00
LICENSES LICENSES: Remove CC-BY-SA-4.0 license text 2018-10-18 11:28:50 +02:00
mm This is the 4.19.103 stable release 2020-02-11 15:05:03 -08:00
net This is the 4.19.104 stable release 2020-02-19 08:31:05 +01:00
samples samples/bpf: Don't try to remove user's homedir on clean 2020-02-11 04:34:05 -08:00
scripts This is the 4.19.103 stable release 2020-02-11 15:05:03 -08:00
security This is the 4.19.102 stable release 2020-02-05 19:20:26 +00:00
sound This is the 4.19.104 stable release 2020-02-19 08:31:05 +01:00
tools This is the 4.19.104 stable release 2020-02-19 08:31:05 +01:00
usr kbuild: clean compressed initramfs image 2019-10-07 18:57:16 +02:00
virt KVM: arm64: pmu: Don't increment SW_INCR if PMCR.E is unset 2020-02-14 16:33:26 -05:00
.clang-format clang-format: Set IndentWrappedFunctionNames false 2018-08-01 18:38:51 +02:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore Add hch to .get_maintainer.ignore 2015-08-21 14:30:10 -07:00
.gitattributes .gitattributes: set git diff driver for C source code files 2016-10-07 18:46:30 -07:00
.gitignore Kbuild updates for v4.17 (2nd) 2018-04-15 17:21:30 -07:00
.mailmap libnvdimm-for-4.19_misc 2018-08-25 18:13:10 -07:00
abi_gki_aarch64_cuttlefish_whitelist ANDROID: ABI/Whitelist: update for Cuttlefish 2020-02-12 11:11:16 +00:00
abi_gki_aarch64_whitelist ANDROID: update ABI representation and GKI whitelist 2020-02-12 11:03:41 +00:00
abi_gki_aarch64.xml ANDROID: ABI/Whitelist: update for Cuttlefish 2020-02-12 11:11:16 +00:00
build.config.aarch64 ANDROID: refactor build.config files to remove duplication 2019-10-22 18:27:12 -07:00
build.config.allmodconfig ANDROID: Don't base allmodconfig on gki_defconfig 2019-12-05 12:48:26 +00:00
build.config.allmodconfig.aarch64 ANDROID: Add allmodconfig build.configs for x86_64 and aarch64 2019-11-12 20:55:23 +00:00
build.config.allmodconfig.x86_64 ANDROID: Add allmodconfig build.configs for x86_64 and aarch64 2019-11-12 20:55:23 +00:00
build.config.common ANDROID: clang: update to 10.0.1 2019-11-27 12:37:18 -08:00
build.config.cuttlefish.aarch64 ANDROID: cf build: Use merge_configs 2020-02-18 21:19:23 +00:00
build.config.cuttlefish.x86_64 ANDROID: cf build: Use merge_configs 2020-02-18 21:19:23 +00:00
build.config.gki ANDROID: gki: Removed cf modules from gki_defconfig 2020-01-31 16:23:38 -08:00
build.config.gki.aarch64 ANDROID: ABI/Whitelist: update for Cuttlefish 2020-02-12 11:11:16 +00:00
build.config.gki.x86_64 ANDROID: refactor build.config files to remove duplication 2019-10-22 18:27:12 -07:00
build.config.x86_64 ANDROID: refactor build.config files to remove duplication 2019-10-22 18:27:12 -07:00
COPYING COPYING: use the new text with points to the license files 2018-03-23 12:41:45 -06:00
CREDITS 9p: remove Ron Minnich from MAINTAINERS 2018-08-17 16:20:26 -07:00
cuttlefish.fragment ANDROID: gki_defconfig: Disable SDCARD_FS 2020-02-14 21:40:44 +00:00
Kbuild Kbuild updates for v4.15 2017-11-17 17:45:29 -08:00
Kconfig kconfig: move the "Executable file formats" menu to fs/Kconfig.binfmt 2018-08-02 08:06:55 +09:00
MAINTAINERS This is the 4.19.80 stable release 2019-10-17 15:33:07 -07:00
Makefile This is the 4.19.104 stable release 2020-02-19 08:31:05 +01:00
README Docs: Added a pointer to the formatted docs to README 2018-03-21 09:02:53 -06:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.