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#!/usr/bin/env python3
# SPDX-License-Identifier: GPL-2.0-only
import raw_pylibcpupower as p
# Simple function call
"""
Get cstate count
"""
cpu_cstates_count = p.cpuidle_state_count(0)
if cpu_cstates_count > -1:
print(f"CPU 0 has {cpu_cstates_count} c-states")
else:
print(f"cstate count error: return code: {cpu_cstates_count}")
"""
Disable cstate (will fail if the above returns is under 1, ex: a virtual machine)
"""
cstate_disabled = p.cpuidle_state_disable(0, 0, 1)
match cstate_disabled:
case 0:
print(f"CPU state disabled")
case -1:
print(f"Idlestate not available")
case -2:
print(f"Disabling is not supported by the kernel")
case -3:
print(f"No write access to disable/enable C-states: try using sudo")
case _:
print(f"Not documented: {cstate_disabled}")
"""
Test cstate is disabled
"""
is_cstate_disabled = p.cpuidle_is_state_disabled(0, 0)
match is_cstate_disabled:
case 1:
print(f"CPU is disabled")
case 0:
print(f"CPU is enabled")
case -1:
print(f"Idlestate not available")
case -2:
print(f"Disabling is not supported by kernel")
case _:
print(f"Not documented: {is_cstate_disabled}")
# Pointer example
topo = p.cpupower_topology()
total_cpus = p.get_cpu_topology(topo)
if total_cpus > 0:
print(f"Number of total cpus: {total_cpus} and number of cores: {topo.cores}")
else:
print(f"Error: could not get cpu topology")
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