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gh-667: Modify message when using amd-pstate-epp #674

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Apr 9, 2024
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gh-667: Modify message when using amd-pstate-epp #674

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gh-667: Modify message when using amd-pstate-epp
corona10 Apr 7, 2024
2e01f6d
Address code review
corona10 Apr 8, 2024
302c5d2
Address code review
corona10 Apr 8, 2024
5408c44
nit
corona10 Apr 8, 2024
860ec51
Update
corona10 Apr 9, 2024
3a4e8c5
fix typo
shadeyg56 Apr 9, 2024
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10 changes: 10 additions & 0 deletions auto_cpufreq/core.py
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Original file line number Diff line number Diff line change
Expand Up @@ -267,13 +267,23 @@ def turbo(value: bool = None):
"""
p_state = Path("/sys/devices/system/cpu/intel_pstate/no_turbo")
cpufreq = Path("/sys/devices/system/cpu/cpufreq/boost")
amd_pstate = Path("/sys/devices/system/cpu/amd_pstate/status")
scaling_driver = Path("/sys/devices/system/cpu/cpu0/cpufreq/scaling_driver")
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Don't need to check scaling_driver. Just amd_pstate/status is enough


if p_state.exists():
inverse = True
f = p_state
elif cpufreq.exists():
f = cpufreq
inverse = False
elif amd_pstate.exists() and scaling_driver.exists():
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remove scaling_driver.exists()

amd_value = amd_pstate.read_text().strip()
scaling_driver_value = scaling_driver.read_text().strip()
if amd_value == "active" and scaling_driver_value == "amd-pstate-epp":
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remove the scaling_driver check since if amd_pstate/status equals "active", then the loaded driver must be amd-pstate-epp

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also this isn't really important but I think this entire if statement doesn't actually do anything since the cpufreq Path only doesn't exist on amd-pstate-epp but I think we should leave the if statement since it makes it more clear what is actually happening.

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hmm, by the way, what for amd_pstate == guided or amd_pstate == passive?

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@corona10 corona10 Apr 8, 2024 •
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Self-reply for guided mode: #602 (comment)
if amd_pstate=guided is set, then /sys/devices/system/cpu/cpufreq/boost is set.

print("CPU turbo is controlled by amd-pstate-epp driver")
else:
print("Warning: CPU turbo is not available")
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@corona10 corona10 Apr 7, 2024 •
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I am not sure if more status can exist at this moment which can set the turbo.
FYI, I am not the AMD expert :)

If "yes," we should make it to set the turbo if the user wants.

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These can be removed since this else statement will never be reached. the cpufreq Path does exist on amd-pstate so it would be caught by the preceding elif statement

return False
else:
print("Warning: CPU turbo is not available")
return False
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