Erwan Velu 1222d527f3 cpufreq: acpi-cpufreq: Report if CPU doesn't support boost technologies ...

There is some rare cases where CPB (and possibly IDA) are missing on
processors.

This is the case fixed by commit f7f3dc00f6 ("x86/cpu/AMD: Fix
erratum 1076 (CPB bit)") and following.

In such context, the boost status isn't reported by
/sys/devices/system/cpu/cpufreq/boost.

This commit is about printing a message to report that the CPU
doesn't expose the boost capabilities.

This message could help debugging platforms hit by this phenomena.

Signed-off-by: Erwan Velu <e.velu@criteo.com>
[ rjw: Change the message text somewhat ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

2019-02-20 13:16:06 +01:00

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