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SubjectRe: [PATCH v5 1/5] ACPI / processor_idle: introduce ACPI_PROCESSOR_CSTATE
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(I seem to have 2 emails, replying on the second)

On 11/05/16 19:28, Len Brown wrote:
> What is the functional goal/purpose of adding CONFIG_ACPI_PROCESSOR_CSTATE?
>

Avoid adding unnecessary dummy implementations of functions and
variables that will never be used on ARM64 and also looks ugly IMO.
E.g.: arch_safe_halt
boot_option_idle_override
IDLE_NOMWAIT
acpi_unlazy_tlb
acpi_processor_cstate_check
disabled_by_idle_boot_param and more...

> If the answer is that it saves code space on an ARM build, how much
> space does it save?
>

NO, it doesn't even add a kB of code I believe, so that's definitely not
the reason. I am fine to retain if we can find a saner way to solve the
above issue.

--
Regards,
Sudeep

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