| # Copyright 2021 The ChromiumOS Authors |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| # Create the runtime directory for MyFiles, removable media, and virtual-files. |
| d= /run/arcvm/media 0700 root root |
| # Create the directory for mojo proxy. |
| d= /run/arcvm/mojo 0770 crosvm crosvm |
| # Create the directory for android-data bind mount. |
| d= /run/arcvm/android-data 0770 crosvm 655360 |
| d= /run/arcvm/android-data/mount 0770 crosvm 655360 |
| # Create the directory mounted as /var/run/arc/testharness. |
| # ugid 656360:656360 maps to system:system on the Android side. |
| d= /run/arcvm/testharness 0770 656360 656360 |
| # Create the directory mounted as /var/run/arc/jemalloc. |
| # TODO(b/237618542): Remove this after migrating this to /run/arcvm/ro/jemalloc |
| d= /run/arcvm/jemalloc 0775 crosvm crosvm |
| |
| # Create directories for APK Cache. APK cache is located at |
| # /var/run/arc/apkcache on guest side. |
| # ugid 656360:656360 maps to system:system on the Android side. |
| # /mnt/stateful_partition/unencrypted/apkcache is the directory where |
| # the cached files are stored. The location of this directory is |
| # inherited from ARC P, where it is created in arc_setup: |
| # http://cs/chromeos_public/src/platform2/arc/setup/arc_setup.cc?l=1523&rcl=d968662f948f87ebb4b3f353cd78c6674f0c9a3d |
| # /run/arcvm/apkcache is the bind mount point of the |
| # /mnt/stateful_partition/unencrypted/apkcache |
| d= /mnt/stateful_partition/unencrypted/apkcache 700 656360 656360 |
| d= /run/arcvm/apkcache 700 656360 656360 |
| |
| # Set the mode for ARCVM CGroups(arcvm and arcvm-vcpus) CFS throttling |
| # to user+group writeable with user as root and group as crosvm. |
| # |
| # Core-scheduling is enabled on crosvm and its vcpu threads, but the device |
| # processes do not enable core-scheduling. Having a mix of core-scheduling |
| # enabled and disabled tasks on the same cgroup causes performance degradation |
| # and hence we seperate it into 2 groups. crosvm and vcpu threads are grouped |
| # into arcvm-vcpus cgroup and devices are grouped into arcvm cgroup. |
| d= /sys/fs/cgroup/cpu/arcvm 0770 root crosvm |
| z= /sys/fs/cgroup/cpu/arcvm/cpu.cfs_period_us 0664 root crosvm |
| z= /sys/fs/cgroup/cpu/arcvm/cpu.cfs_quota_us 0664 root crosvm |
| z= /sys/fs/cgroup/cpu/arcvm/cpu.shares 0664 root crosvm |
| d= /sys/fs/cgroup/cpu/arcvm-vcpus 0770 root crosvm |
| z= /sys/fs/cgroup/cpu/arcvm-vcpus/cpu.cfs_period_us 0664 root crosvm |
| z= /sys/fs/cgroup/cpu/arcvm-vcpus/cpu.cfs_quota_us 0664 root crosvm |
| z= /sys/fs/cgroup/cpu/arcvm-vcpus/cpu.shares 0664 root crosvm |
| |
| # crosvm needs write permission on cgroup tasks file to move the processes |
| # to ARCVM cgroups(arcvm and arcvm-vcpus). |
| z= /sys/fs/cgroup/cpu/arcvm/tasks 0664 root crosvm |
| z= /sys/fs/cgroup/cpu/arcvm-vcpus/tasks 0664 root crosvm |
| |
| # crosvm may need to boost the arcvm services and vcpus, and enable the latency |
| # senstive attribute for the little.BIG cores architecture, in order to reduce |
| # the whole VM latency. This behavior is enabled if the boost-global parameter |
| # of the scheduler-tune is set to a value higher than 0. The boost-global |
| # parameter is a scaling factor, which adjusts the percentage frequency ratio of |
| # the little/big cores frequency. |
| z= /sys/fs/cgroup/cpu/arcvm-vcpus/cpu.uclamp.min 0664 root crosvm |
| z= /sys/fs/cgroup/cpu/arcvm-vcpus/cpu.uclamp.latency_sensitive 0664 root crosvm |
| z= /sys/fs/cgroup/cpu/arcvm/cpu.uclamp.min 0664 root crosvm |
| z= /sys/fs/cgroup/cpu/arcvm/cpu.uclamp.latency_sensitive 0664 root crosvm |
