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Date: Thu, 29 Jan 2009 16:19:56 -0800
From: Andrew Morton <akpm@linux-foundation.org>
To: Frederic Weisbecker <fweisbec@gmail.com>
Cc: rostedt@goodmis.org, mingo@elte.hu, linux-kernel@vger.kernel.org,
       acme@ghostprotocols.net, fweisbec@gmail.com
Subject: Re: [PATCH] tracing/ftrace: add an option to not print the context
 info for events
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On Tue, 20 Jan 2009 16:52:36 -0800 (PST)
Frederic Weisbecker <fweisbec@gmail.com> wrote:

> +		usec_rem = do_div(t, 1000000ULL);

The second argument to do_div() is in fact a u32.  It's quite hard to
track this down due to use of macros and lack of comemnts.

Doing

	usec_rem = do_div(t, USEC_PER_SEC);

would suit here.