1 #!/usr/bin/env python3
2 # SPDX-License-Identifier: GPL-2.0-only
3
4 import raw_pylibcpupower as p
5
6 # Simple function call
7
8 """
9 Get cstate count
10 """
11 cpu_cstates_count = p.cpuidle_state_count(0)
12 if cpu_cstates_count > -1:
13 print(f"CPU 0 has {cpu_cstates_count} c-states")
14 else:
15 print(f"cstate count error: return code: {cpu_cstates_count}")
16
17 """
18 Disable cstate (will fail if the above is 0, ex: a virtual machine)
19 """
20 cstate_disabled = p.cpuidle_state_disable(0, 0, 1)
21 if cpu_cstates_count == 0:
22 print(f"CPU 0 has {cpu_cstates_count} c-states")
23 else:
24 print(f"cstate count error: return code: {cpu_cstates_count}")
25
26 match cstate_disabled:
27 case 0:
28 print(f"CPU state disabled")
29 case -1:
30 print(f"Idlestate not available")
31 case _:
32 print(f"Not documented")
33
34
35 # Pointer example
36
37 topo = p.cpupower_topology()
38 total_cpus = p.get_cpu_topology(topo)
39 if total_cpus > 0:
40 print(f"Number of total cpus: {total_cpus} and number of cores: {topo.cores}")
41 else:
42 print(f"Error: could not get cpu topology")
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