Merge pull request #109 from sirlucjan/services-rework

Reworking systemd-service and adding a config file

services/README.md

@@ -3,30 +3,42 @@
 This guide provides instructions for running the SCX schedulers as a systemd service and checking its logs.
 
 ## Getting Started
+
+At the very beginning, configure the /etc/default/scx file:
+
+- in the SCX_SCHEDULER variable, select the scheduler you are interested in
+
+- in the SCX_FLAGS variable, specify the flags you want to add. To do this, execute and read what flags you can add.
+
+```
+scx_SCHEDNAME --help
+```
+
 To start the SCX scheduler at boot, you need to run the systemd service as root. Here are the steps:
 
+
 - Enable the service:
 
 ```
-systemctl enable scx_SCHEDNAME
+systemctl enable scx.service
 ```
 
 - Start the service:
 
 ```
-systemctl start scx_SCHEDNAME
+systemctl start scx.service
 ```
 
 Alternatively, you can use a shortened version of these commands:
 
 ```
-systemctl enable --now scx_SCHEDNAME
+systemctl enable --now scx.service
 ```
 
 - To check the status of the service, use the following command:
 
 ```
-systemctl status scx_SCHEDNAME
+systemctl status scx.service
 ```
 
 ## Checking Journald Logs

services/meson.build

@@ -2,7 +2,7 @@ systemd_system_unit_dir = systemd.get_variable(pkgconfig : 'systemdsystemunitdir
 
   install_data(
     [
-      'scx_central.service',  'scx_flatcg.service',  'scx_nest.service',  'scx_pair.service', 'scx_qmap.service', 'scx_rustland.service',  'scx_rusty.service',  'scx_simple.service',  'scx_userland.service',
+      'scx.service',
     ],
     install_dir: systemd_system_unit_dir
   )
@@ -14,3 +14,9 @@ systemd_system_unit_dir = systemd.get_variable(pkgconfig : 'systemdsystemunitdir
     install_dir: '/etc/systemd'
   )
 
+  install_data(
+    [
+      'scx',
+    ],
+    install_dir: '/etc/default'
+  )

services/scx

@@ -0,0 +1,5 @@
+# List of scx_schedulers: scx_central scx_flatcg scx_layered scx_nest scx_pair scx_qmap scx_rustland scx_rusty scx_simple scx_userland
+SCX_SCHEDULER=scx_rusty
+
+# Set custom flags for each scheduler, below is an example of how to use
+#SCX_FLAGS='-s 3000 -i 0.5 -I 0.025 -l 0.5 -b -k'

services/scx.service

@@ -0,0 +1,14 @@
+[Unit]
+Description=Start scx_scheduler
+ConditionPathIsDirectory=/sys/kernel/sched_ext
+
+[Service]
+Type=simple
+EnvironmentFile=/etc/default/scx
+ExecStart=/bin/bash -c 'exec $SCX_SCHEDULER $SCX_FLAGS '
+Restart=always
+StandardError=journal
+LogNamespace=sched-ext
+
+[Install]
+WantedBy=multi-user.target

services/scx_central.service

@@ -1,14 +0,0 @@
-[Unit]
-Description=Start scx_central
-ConditionPathIsDirectory=/sys/kernel/sched_ext
-Conflicts=scx_flatcg.service  scx_nest.service  scx_pair.service  scx_qmap.service  scx_rustland.service  scx_rusty.service  scx_simple.service  scx_userland.service
-
-[Service]
-Type=simple
-ExecStart=scx_central
-Restart=always
-StandardError=journal
-LogNamespace=sched-ext
-
-[Install]
-WantedBy=multi-user.target

services/scx_flatcg.service

@@ -1,14 +0,0 @@
-[Unit]
-Description=Start scx_flatcg
-ConditionPathIsDirectory=/sys/kernel/sched_ext
-Conflicts=scx_central.service  scx_nest.service  scx_pair.service  scx_qmap.service  scx_rustland.service  scx_rusty.service  scx_simple.service  scx_userland.service
-
-[Service]
-Type=simple
-ExecStart=scx_flatcg
-Restart=always
-StandardError=journal
-LogNamespace=sched-ext
-
-[Install]
-WantedBy=multi-user.target

services/scx_nest.service

@@ -1,14 +0,0 @@
-[Unit]
-Description=Start scx_nest
-ConditionPathIsDirectory=/sys/kernel/sched_ext
-Conflicts=scx_central.service  scx_flatcg.service  scx_pair.service  scx_qmap.service  scx_rustland.service  scx_rusty.service  scx_simple.service  scx_userland.service
-
-[Service]
-Type=simple
-ExecStart=scx_nest
-Restart=always
-StandardError=journal
-LogNamespace=sched-ext
-
-[Install]
-WantedBy=multi-user.target

services/scx_pair.service

@@ -1,14 +0,0 @@
-[Unit]
-Description=Start scx_pair
-ConditionPathIsDirectory=/sys/kernel/sched_ext
-Conflicts=scx_central.service  scx_flatcg.service  scx_nest.service  scx_qmap.service  scx_rustland.service  scx_rusty.service  scx_simple.service  scx_userland.service
-
-[Service]
-Type=simple
-ExecStart=scx_pair
-Restart=always
-StandardError=journal
-LogNamespace=sched-ext
-
-[Install]
-WantedBy=multi-user.target

services/scx_qmap.service

@@ -1,14 +0,0 @@
-[Unit]
-Description=Start scx_qmap
-ConditionPathIsDirectory=/sys/kernel/sched_ext
-Conflicts=scx_central.service  scx_flatcg.service  scx_nest.service  scx_pair.service  scx_rustland.service  scx_rusty.service  scx_simple.service  scx_userland.service
-
-[Service]
-Type=simple
-ExecStart=scx_qmap
-Restart=always
-StandardError=journal
-LogNamespace=sched-ext
-
-[Install]
-WantedBy=multi-user.target

services/scx_rustland.service

@@ -1,14 +0,0 @@
-[Unit]
-Description=Start scx_rustland
-ConditionPathIsDirectory=/sys/kernel/sched_ext
-Conflicts=scx_central.service  scx_flatcg.service  scx_nest.service  scx_pair.service  scx_qmap.service  scx_rusty.service  scx_simple.service  scx_userland.service
-
-[Service]
-Type=simple
-ExecStart=scx_rustland
-Restart=always
-StandardError=journal
-LogNamespace=sched-ext
-
-[Install]
-WantedBy=multi-user.target

services/scx_rusty.service

@@ -1,14 +0,0 @@
-[Unit]
-Description=Start scx_rusty
-ConditionPathIsDirectory=/sys/kernel/sched_ext
-Conflicts=scx_central.service  scx_flatcg.service  scx_nest.service  scx_pair.service  scx_qmap.service  scx_rustland.service  scx_simple.service  scx_userland.service
-
-[Service]
-Type=simple
-ExecStart=scx_rusty
-Restart=always
-StandardError=journal
-LogNamespace=sched-ext
-
-[Install]
-WantedBy=multi-user.target

services/scx_simple.service

@@ -1,14 +0,0 @@
-[Unit]
-Description=Start scx_simple
-ConditionPathIsDirectory=/sys/kernel/sched_ext
-Conflicts=scx_central.service  scx_flatcg.service  scx_nest.service  scx_pair.service  scx_qmap.service  scx_rustland.service  scx_rusty.service  scx_userland.service
-
-[Service]
-Type=simple
-ExecStart=scx_simple
-Restart=always
-StandardError=journal
-LogNamespace=sched-ext
-
-[Install]
-WantedBy=multi-user.target

services/scx_userland.service

@@ -1,14 +0,0 @@
-[Unit]
-Description=Start scx_userland
-ConditionPathIsDirectory=/sys/kernel/sched_ext
-Conflicts=scx_central.service  scx_flatcg.service  scx_nest.service  scx_pair.service  scx_qmap.service  scx_rustland.service  scx_rusty.service  scx_simple.service
-
-[Service]
-Type=simple
-ExecStart=scx_userland
-Restart=always
-StandardError=journal
-LogNamespace=sched-ext
-
-[Install]
-WantedBy=multi-user.target