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SubjectRe: [PATCH 1/2] nohz: Select VIRT_CPU_ACCOUNTING_GEN from full dynticks config
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Frederic Weisbecker <fweisbec@gmail.com> writes:

> Turn the full dynticks passive dependency on VIRT_CPU_ACCOUNTING_GEN
> to an active one.

[...]

> @@ -329,7 +329,7 @@ config VIRT_CPU_ACCOUNTING_NATIVE
>
> config VIRT_CPU_ACCOUNTING_GEN
> bool "Full dynticks CPU time accounting"
> - depends on HAVE_CONTEXT_TRACKING && 64BIT
> + depends on HAVE_CONTEXT_TRACKING && 64BIT && NO_HZ_FULL
> select VIRT_CPU_ACCOUNTING
> select CONTEXT_TRACKING
> help

Existing 64-bit dependency is here...

> diff --git a/kernel/time/Kconfig b/kernel/time/Kconfig
> index 1ea2bba..a2ddd65 100644
> --- a/kernel/time/Kconfig
> +++ b/kernel/time/Kconfig
> @@ -104,11 +104,13 @@ config NO_HZ_FULL
> depends on SMP
> # RCU_USER_QS dependency
> depends on HAVE_CONTEXT_TRACKING
> - depends on VIRT_CPU_ACCOUNTING_GEN
> + # VIRT_CPU_ACCOUNTING_GEN dependency
> + depends on 64BIT

...and another one added here?

Is there a new 64-bit dependency in NO_HZ_FULL not covered by the one
already in VIRT_CPU_ACCOUNTING_GEN? Or do you have reasons to be doubly
paranoid about the non 64-bit usage? ;)

Kevin


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