Subject: ACPI: Create proc entry 'power' only C2 or C3 is supported
From: Yi Yang <[EMAIL PROTECTED]>
ACPI processor idle driver makes sense only if the processor supports
C2 or C3. For legacy C0 and C1, just the original pm_idle is working
, statistics info about promotion, demotion, latency, usage and
duration are empty or 0, so these are misleading, users'll think their
CPUs support C states (C2 or C3), /proc/acpi/processor/CPU*/power
shouldn't exist for this case at all.
..
On the other hand, this change might send many of us scrambling
to try and figure out which kernel CONFIG option is responsible
for the expected /proc/acpi/processor/CPU*/power entries not showing up.
Thus just adding to the confusion by as much as it saves.
What do others think?
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