linux-kernel - Re: [PATCH 2/6] cputime: Default implementation of nsecs -> cputime conversion

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Date:	Thu, 06 Mar 2014 14:17:28 -0500
From:	Rik van Riel <riel@...hat.com>
To:	Frederic Weisbecker <fweisbec@...il.com>,
	LKML <linux-kernel@...r.kernel.org>
CC:	Ingo Molnar <mingo@...nel.org>,
	Marcelo Tosatti <mtosatti@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 2/6] cputime: Default implementation of nsecs -> cputime
 conversion

On 03/06/2014 12:56 PM, Frederic Weisbecker wrote:
> The architectures that override cputime_t (s390, ppc) don't provide
> any version of nsecs_to_cputime(). Indeed this cputime_t implementation
> by backend only happens when CONFIG_VIRT_CPU_ACCOUNTING_NATIVE=y under
> which the core code doesn't make any use of nsecs_to_cputime().
>
> At least for now.
>
> We are going to make a broader use of it so lets provide a default
> version with a per usecs granularity. It should be good enough for most
> usecases.
>
> Cc: Ingo Molnar <mingo@...nel.org>
> Cc: Marcelo Tosatti <mtosatti@...hat.com>
> Cc: Peter Zijlstra <peterz@...radead.org>
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Signed-off-by: Frederic Weisbecker <fweisbec@...il.com>

Acked-by: Rik van Riel <riel@...hat.com>

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