linux-kernel - Re: [resend PATCH for 3.2] procfs: do not confuse jiffies with cputime64

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Message-ID: <m28vm5pjrl.fsf@igel.home>
Date:	Thu, 22 Dec 2011 00:50:06 +0100
From:	Andreas Schwab <schwab@...ux-m68k.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Michal Hocko <mhocko@...e.cz>, Arnd Bergmann <arnd@...db.de>,
	linux-kernel@...r.kernel.org,
	"Artem S. Tashkinov" <t.artem@...lcity.com>,
	Dave Jones <davej@...hat.com>,
	Alexey Dobriyan <adobriyan@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Martin Schwidefsky <schwidefsky@...ibm.com>
Subject: Re: [resend PATCH for 3.2] procfs: do not confuse jiffies with cputime64_t

Andrew Morton <akpm@...ux-foundation.org> writes:

> From: Andreas Schwab <schwab@...ux-m68k.org>
> Subject: procfs: do not confuse jiffies with cputime64_t
>
> get_{idle,iowait}_time are supposed to return cputime64_t values, not
> jiffies.  Add usecs_to_cputime64 for this.

For most architectures (which use the asm-generic/cputime.h) jiffies use
the same unit as cputime64_t values, but ia64, powerpc and s390 make
them different.

Andreas.

-- 
Andreas Schwab, schwab@...ux-m68k.org
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