[Feature request] Include scxctl into scx/sched-ext

[sirlucjan]

It would be a great idea to integrate scxctl in scx or add this as a separate repository in sched-ext. @frap129 has done a great job and this is a very useful tool. Tested on CachyOS and Fedora 41 Kinoite.

lucjan at cachyos ~ 12:35:48    
❯ scxctl --help
A cli interface for scx_loader

Usage: scxctl <COMMAND>

Commands:
  get     Get the current scheduler and mode
  list    List all supported schedulers
  start   Start a scheduler in a mode or with arguments
  switch  Switch schedulers or modes, optionally with arguments
  stop    Stop the current scheduler
  help    Print this message or the help of the given subcommand(s)

Options:
  -h, --help     Print help
  -V, --version  Print version
lucjan at cachyos ~ 12:35:53    
❯ scxctl list  
supported schedulers: ["bpfland", "flash", "lavd", "p2dq", "rusty"]  
lucjan at cachyos ~ 12:36:11    
❯ scxctl start -s bpfland
started scx_bpfland in auto mode
lucjan at cachyos ~ 12:36:39    
❯ scxctl get                                                             
running bpfland in auto mode
lucjan at cachyos ~ 12:36:49    
❯ systemctl status scx_loader.service
● scx_loader.service - DBUS on-demand loader of sched-ext schedulers
     Loaded: loaded (/usr/lib/systemd/system/scx_loader.service; disabled; preset: disabled)
     Active: active (running) since Tue 2025-02-18 11:44:08 CET; 52min ago
 Invocation: 17b213e4700c4574a728925d02b5b046
   Main PID: 115114 (scx_loader)
      Tasks: 22 (limit: 37392)
     Memory: 31.5M (peak: 32M)
        CPU: 54ms
     CGroup: /system.slice/scx_loader.service
             ├─115114 /usr/bin/scx_loader
             └─120351 scx_bpfland

lut 18 12:36:39 cachyos scx_loader[120351]: 11:36:39 [INFO] L2 cache ID 0: sibling CPUs: [0, 8]
lut 18 12:36:39 cachyos scx_loader[120351]: 11:36:39 [INFO] L2 cache ID 1: sibling CPUs: [1, 9]
lut 18 12:36:39 cachyos scx_loader[120351]: 11:36:39 [INFO] L2 cache ID 2: sibling CPUs: [2, 10]
lut 18 12:36:39 cachyos scx_loader[120351]: 11:36:39 [INFO] L2 cache ID 3: sibling CPUs: [3, 11]
lut 18 12:36:39 cachyos scx_loader[120351]: 11:36:39 [INFO] L2 cache ID 4: sibling CPUs: [4, 12]
lut 18 12:36:39 cachyos scx_loader[120351]: 11:36:39 [INFO] L2 cache ID 5: sibling CPUs: [5, 13]
lut 18 12:36:39 cachyos scx_loader[120351]: 11:36:39 [INFO] L2 cache ID 6: sibling CPUs: [6, 14]
lut 18 12:36:39 cachyos scx_loader[120351]: 11:36:39 [INFO] L2 cache ID 7: sibling CPUs: [7, 15]
lut 18 12:36:39 cachyos scx_loader[120351]: 11:36:39 [INFO] L3 cache ID 0: sibling CPUs: [0, 8, 1, 9, 2, 10, 3, 11, 4, 12, 5, 13, 6, 14, 7, 15]
lut 18 12:36:49 cachyos scx_loader[115114]: [INFO]: called "scx_bpfland"