blsched: user space big.LITTLE schedulerguppy_6.90.0guppy/6.90.0flounder_5.99.6flounder_5.99.5flounder_5.99.4flounder_5.99.3flounder_5.99.2flounder_5.99.1flounder/5.99.6flounder/5.99.5flounder/5.99.4flounder/5.99.3flounder/5.99.2flounder/5.99.16.90.05.99.65.99.55.99.45.99.35.99.25.99.1sandbox/jsmoeller/profiles

Optimizes task placement on big.LITTLE platforms.
Currently enabled for renesas r-car gen3 boards
with the machine feature 'biglittle' defined.

Change-Id: Idee5e759f13b3942496a831c444799b880caac89
Signed-off-by: Frode Isaksen <fisaksen@baylibre.com>

7 files changed, 119 insertions, 0 deletions

diff --git a/meta-blsched/COPYING.MIT b/meta-blsched/COPYING.MIT
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+++ b/meta-blsched/COPYING.MIT
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+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/meta-blsched/README.md b/meta-blsched/README.md
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+# Baylibre's AGL blsched layer
+
+This README file contains information on the contents of the
+meta-blsched layer.
+
+Please see the corresponding sections below for details.
+
+### Dependencies
+-------------------------
+
+The linux kernel must have the following config options enabled:
+CONFIG_CONNECTOR
+CONFIG_PROC_EVENTS
+CONFIG_SCHED_DEBUG
+
+### Patches
+-----------
+
+Please submit any patches against the meta-blsched layer to the
+the maintainers:
+
+* Michael Turquette <mturquette@baylibre.com>
+* Frode Isaksen <fisaksen@baylibre.com>
+* Jerome Brunet <jbrunet@baylibre.com>
+
+## I. Description and provided packages:
+
+The layer provides blsched utility. This package is a utility to improve scheduling efficiency on big.LITTLE architecture.
+
++ Provided packages :
+	- blsched : see https://github.com/BayLibre/bLsched/blob/master/README.md
+	- blsched-daemon : systemd service tailored for r8a7795 and r8a7796 SoCs
+
+## II. Adding the meta-blsched layer to your AGL build
+
+1. Download meta-agl-extra at `$AGL_TOP`
+2. Add `blsched` to the feature of your AGL build<br>
+```shell
+source meta-agl/scripts/aglsetup.sh -m $MACHINE -b <your-other-features> blsched
+```
+
+With this `meta-blsched` will be added to your `conf/bblayers.conf`. `blsched` and `blsched-daemon` will be appended to your image.
diff --git a/meta-blsched/conf/layer.conf b/meta-blsched/conf/layer.conf
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+++ b/meta-blsched/conf/layer.conf
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+# We have a conf and classes directory, add to BBPATH
+BBPATH .= ":${LAYERDIR}"
+
+# We have recipes-* directories, add to BBFILES
+BBFILES += "${LAYERDIR}/recipes-*/*/*.bb \
+	${LAYERDIR}/recipes-*/*/*.bbappend"
+
+BBFILE_COLLECTIONS += "blsched"
+BBFILE_PATTERN_blsched = "^${LAYERDIR}/"
+BBFILE_PRIORITY_blsched = "6"
diff --git a/meta-blsched/recipes-bsp/arm-trusted-firmware/arm-trusted-firmware_git.bbappend b/meta-blsched/recipes-bsp/arm-trusted-firmware/arm-trusted-firmware_git.bbappend
new file mode 100644
index 0000000..b5a7aaa
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+++ b/meta-blsched/recipes-bsp/arm-trusted-firmware/arm-trusted-firmware_git.bbappend
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+export PSCI_DISABLE_BIGLITTLE_IN_CA57BOOT="${@bb.utils.contains('MACHINE_FEATURES','biglittle','0','1',d)}"
diff --git a/meta-blsched/recipes-core/blsched/blsched_git.bb b/meta-blsched/recipes-core/blsched/blsched_git.bb
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+SUMMARY = "big.LITTLE scheduler"
+HOMEPAGE = "https://github.com/BayLibre/bLsched"
+LICENSE = "GPLv2"
+LIC_FILES_CHKSUM = "file://COPYING;md5=b0df75b2edb80ee98b732ee0514a265c"
+
+SRC_URI = "git://github.com/baylibre/blsched.git \
+	   file://blsched.service \
+          "
+
+SRCREV = "b6bf199bc2def486857fb7003a6cb07708ed685e"
+
+S = "${WORKDIR}/git"
+
+inherit autotools
+
+COMPATIBLE_MACHINE ="((h|m)3ulcb|salvator-x)"
+PACKAGE_ARCH = "${MACHINE_ARCH}"
+
+DAEMONARGS_r8a7795 = "-b 0 -b 1 -b 2 -b 3"
+DAEMONARGS_r8a7796 = "-b 0 -b 1"
+
+RDEPENDS_${PN} += " blsched"
+
+inherit systemd
+
+SYSTEMD_SERVICE_${PN} = "blsched.service"
+
+do_install_append () {
+	# Install the systemd init file
+	install -d ${D}${systemd_unitdir}/system
+	install -c -m 0644 ${WORKDIR}/blsched.service ${D}${systemd_unitdir}/system
+
+	sed -i -e 's,@SBINDIR@,${sbindir},g' \
+		-e 's,@ARGS@,${DAEMONARGS},g' \
+		${D}${systemd_unitdir}/system/*.service
+}
diff --git a/meta-blsched/recipes-core/blsched/files/blsched.service b/meta-blsched/recipes-core/blsched/files/blsched.service
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+++ b/meta-blsched/recipes-core/blsched/files/blsched.service
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+[Unit]
+Description=blsched big.LITTLE cpu manager service
+After=local-fs.target
+
+[Service]
+ExecStart=@SBINDIR@/blsched @ARGS@
+
+[Install]
+WantedBy=multi-user.target
diff --git a/meta-blsched/recipes-kernel/linux/linux-renesas_%.bbappend b/meta-blsched/recipes-kernel/linux/linux-renesas_%.bbappend
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+++ b/meta-blsched/recipes-kernel/linux/linux-renesas_%.bbappend
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+SRC_URI_append = " \
+	${@bb.utils.contains('MACHINE_FEATURES','biglittle','file://procevent.cfg','',d)} \
+	${@bb.utils.contains('MACHINE_FEATURES','biglittle','file://scheddebug.cfg','',d)} \
+	"