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lineage: Add support for BFQIO cgroups * Introduce a standalone libbfqio to be picked by inputflinger, surfaceflinger and display HAL, without extending the VNDK. * This commit is based on the following patches: From: Steve Kondik <steve@cyngn.com> Date: Tue, 08 Sep 2015 02:23:41 -0700 cutils: Add support for BFQIO cgroups * Add support for a custom hierarchy of cgroups on top of the BFQ IO scheduler. This allows us to place every thread into the right class (realtime/best-effort/idle) with a set up priority buckets depending on use case. * The benefit of doing this is pretty incredible from an interactivity standpoint. Realtime users (display/audio) benefit the most, resulting in glitch-free audio and jank-free video. Dexopting in the background no longer causes active harm to foreground tasks. Other tasks such as account syncing become invisible from the user's perspective. * Magic bullet? Perhaps. Change-Id: I4eb911395364ce46d6dcbff43e94286ded03a97d From: Steve Kondik <steve@cyngn.com> Date: Sat, 19 Sep 2015 12:43:40 -0700 cutils: Fix copypasta in ioprio code Change-Id: I976693be4a6913ed2090fa32d0f8e4c93657e7e7 From: Steve Kondik <steve@cyngn.com> Date: Sun, 20 Sep 2015 01:08:07 -0700 cutils: Fix display ioprio * A few unwanted items are sneaking into this class resulting in system slowdowns. Fixit. Change-Id: I29033a38adf2c65535f916135d395d5147afe323 From: Steve Kondik <steve@cyngn.com> Date: Sun, 20 Sep 2015 03:00:54 -0700 cutils: Clean up ioprio grouping * It's now better understood what's happening system-wide due to these changes, so clean up the stuff which is not necessary and/or potentially harmful. Change-Id: I72178770844c1ac388a0b424b12cdc49042aec87 From: Steve Kondik <steve@cyngn.com> Date: Sun, 20 Sep 2015 17:36:54 -0700 cutils: Remove ioprio magic * ..and replace it with something we can call explictly where it is required in order to achieve the same goodness without the badness. Change-Id: I605b3acbc56ce82663dd6f1c9f3320d0ab75e178 From: Zhao Wei Liew <zhaoweiliew@gmail.com> Date: Thu, 08 Sep 2016 20:01:29 +0800 cutils: iosched_policy: Access BFQIO cgroup in /dev/bfqio AOSP doesn't mount cgroups in /sys/fs/cgroup, but in /dev/. Follow what AOSP does. Change-Id: I40d2241e3e5c41612d3a54d22981d3250f8b1ed6 Change-Id: I7d42bd6bb9176724c1e5687de14946923150ae89
7 years ago
//
// Copyright (C) 2017-2019 The LineageOS Project
lineage: Add support for BFQIO cgroups * Introduce a standalone libbfqio to be picked by inputflinger, surfaceflinger and display HAL, without extending the VNDK. * This commit is based on the following patches: From: Steve Kondik <steve@cyngn.com> Date: Tue, 08 Sep 2015 02:23:41 -0700 cutils: Add support for BFQIO cgroups * Add support for a custom hierarchy of cgroups on top of the BFQ IO scheduler. This allows us to place every thread into the right class (realtime/best-effort/idle) with a set up priority buckets depending on use case. * The benefit of doing this is pretty incredible from an interactivity standpoint. Realtime users (display/audio) benefit the most, resulting in glitch-free audio and jank-free video. Dexopting in the background no longer causes active harm to foreground tasks. Other tasks such as account syncing become invisible from the user's perspective. * Magic bullet? Perhaps. Change-Id: I4eb911395364ce46d6dcbff43e94286ded03a97d From: Steve Kondik <steve@cyngn.com> Date: Sat, 19 Sep 2015 12:43:40 -0700 cutils: Fix copypasta in ioprio code Change-Id: I976693be4a6913ed2090fa32d0f8e4c93657e7e7 From: Steve Kondik <steve@cyngn.com> Date: Sun, 20 Sep 2015 01:08:07 -0700 cutils: Fix display ioprio * A few unwanted items are sneaking into this class resulting in system slowdowns. Fixit. Change-Id: I29033a38adf2c65535f916135d395d5147afe323 From: Steve Kondik <steve@cyngn.com> Date: Sun, 20 Sep 2015 03:00:54 -0700 cutils: Clean up ioprio grouping * It's now better understood what's happening system-wide due to these changes, so clean up the stuff which is not necessary and/or potentially harmful. Change-Id: I72178770844c1ac388a0b424b12cdc49042aec87 From: Steve Kondik <steve@cyngn.com> Date: Sun, 20 Sep 2015 17:36:54 -0700 cutils: Remove ioprio magic * ..and replace it with something we can call explictly where it is required in order to achieve the same goodness without the badness. Change-Id: I605b3acbc56ce82663dd6f1c9f3320d0ab75e178 From: Zhao Wei Liew <zhaoweiliew@gmail.com> Date: Thu, 08 Sep 2016 20:01:29 +0800 cutils: iosched_policy: Access BFQIO cgroup in /dev/bfqio AOSP doesn't mount cgroups in /sys/fs/cgroup, but in /dev/. Follow what AOSP does. Change-Id: I40d2241e3e5c41612d3a54d22981d3250f8b1ed6 Change-Id: I7d42bd6bb9176724c1e5687de14946923150ae89
7 years ago
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
cc_library_headers {
name: "libbfqio_headers",
vendor_available: true,
export_include_dirs: ["include"],
}
cc_library {
name: "libbfqio",
vendor_available: true,
lineage: Add support for BFQIO cgroups * Introduce a standalone libbfqio to be picked by inputflinger, surfaceflinger and display HAL, without extending the VNDK. * This commit is based on the following patches: From: Steve Kondik <steve@cyngn.com> Date: Tue, 08 Sep 2015 02:23:41 -0700 cutils: Add support for BFQIO cgroups * Add support for a custom hierarchy of cgroups on top of the BFQ IO scheduler. This allows us to place every thread into the right class (realtime/best-effort/idle) with a set up priority buckets depending on use case. * The benefit of doing this is pretty incredible from an interactivity standpoint. Realtime users (display/audio) benefit the most, resulting in glitch-free audio and jank-free video. Dexopting in the background no longer causes active harm to foreground tasks. Other tasks such as account syncing become invisible from the user's perspective. * Magic bullet? Perhaps. Change-Id: I4eb911395364ce46d6dcbff43e94286ded03a97d From: Steve Kondik <steve@cyngn.com> Date: Sat, 19 Sep 2015 12:43:40 -0700 cutils: Fix copypasta in ioprio code Change-Id: I976693be4a6913ed2090fa32d0f8e4c93657e7e7 From: Steve Kondik <steve@cyngn.com> Date: Sun, 20 Sep 2015 01:08:07 -0700 cutils: Fix display ioprio * A few unwanted items are sneaking into this class resulting in system slowdowns. Fixit. Change-Id: I29033a38adf2c65535f916135d395d5147afe323 From: Steve Kondik <steve@cyngn.com> Date: Sun, 20 Sep 2015 03:00:54 -0700 cutils: Clean up ioprio grouping * It's now better understood what's happening system-wide due to these changes, so clean up the stuff which is not necessary and/or potentially harmful. Change-Id: I72178770844c1ac388a0b424b12cdc49042aec87 From: Steve Kondik <steve@cyngn.com> Date: Sun, 20 Sep 2015 17:36:54 -0700 cutils: Remove ioprio magic * ..and replace it with something we can call explictly where it is required in order to achieve the same goodness without the badness. Change-Id: I605b3acbc56ce82663dd6f1c9f3320d0ab75e178 From: Zhao Wei Liew <zhaoweiliew@gmail.com> Date: Thu, 08 Sep 2016 20:01:29 +0800 cutils: iosched_policy: Access BFQIO cgroup in /dev/bfqio AOSP doesn't mount cgroups in /sys/fs/cgroup, but in /dev/. Follow what AOSP does. Change-Id: I40d2241e3e5c41612d3a54d22981d3250f8b1ed6 Change-Id: I7d42bd6bb9176724c1e5687de14946923150ae89
7 years ago
srcs: [
"bfqio.c",
],
shared_libs: [
"libcutils",
"liblog",
],
header_libs: [
"libbfqio_headers",
],
export_header_lib_headers: ["libbfqio_headers"],
cflags: [
"-Werror",
"-Wall",
"-Wextra",
],
}