linux-kernel - Re: [PATCH -mm 3/3] Freezer: Measure freezing time

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Message-Id: <20070801165333.7f93c4a6.akpm@linux-foundation.org>
Date:	Wed, 1 Aug 2007 16:53:33 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Nigel Cunningham <nigel@...el.suspend2.net>,
	Oleg Nesterov <oleg@...sign.ru>, Pavel Machek <pavel@....cz>,
	pm list <linux-pm@...ts.linux-foundation.org>
Subject: Re: [PATCH -mm 3/3] Freezer: Measure freezing time

On Wed, 1 Aug 2007 23:36:39 +0200
"Rafael J. Wysocki" <rjw@...k.pl> wrote:

> +	do_gettimeofday(&end);
> +	elapsed_csecs64 = timeval_to_ns(&end) - timeval_to_ns(&start);
> +	do_div(elapsed_csecs64, NSEC_PER_SEC / 100);
> +	elapsed_csecs = elapsed_csecs64;

I'd have thought that we had enough timeval library code by now to
not need to open-code things like this.

<looks around>

No, it seems that we don't.  So people keep on open-coding the same
thing, or inventing private code which shouldn't be.

<notices net/dccp/dccp.h>

What the hell is all that stuff doing in there?
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