linux-kernel - Re: [PATCH v4] trace: Use 64-bit timekeeping

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Date:	Wed, 28 Jan 2015 15:55:39 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Tina Ruchandani <ruchandani.tina@...il.com>,
	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...hat.com>
Subject: Re: [PATCH v4] trace: Use 64-bit timekeeping

On Wednesday 28 January 2015 09:53:49 Steven Rostedt wrote:
> On Wed, 28 Jan 2015 19:46:11 +0530
> Tina Ruchandani <ruchandani.tina@...il.com> wrote:
> 
> > The ring_buffer_producer uses 'struct timeval' to measure
> > its start and end times. 'struct timeval' on 32-bit systems
> > will have its tv_sec value overflow in year 2038 and beyond.
> > This patch replaces struct timeval with 'ktime_t' which uses
> > 64-bit representation for nanoseconds.
> > 
> > Suggested-by: Arnd Bergmann <arnd@...db.de>
> > Suggested-by: Steven Rostedt <rostedt@...dmis.org>
> > Signed-off-by: Tina Ruchandani <ruchandani.tina@...il.com>
> > ---
> > Changes in v4:
> >       - Fix typo in commit message.
> >       - Avoid typecast to 'long long' by defining RUN_TIME as '10ULL'
> >         instead of '10'.
> 
> Although I have not tested this, this patch looks fine to me. Is this
> going to go through some cleanup tree or should I just pull it?
> 

Please apply it to your tree.

	Arnd
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