linux-kernel - Re: [PATCH] clocksource/cadence_ttc: Reuse clocksource as sched

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Message-ID: <0030b826-0eb1-4bb8-a0de-1d8dc68bd81a@TX2EHSMHS017.ehs.local>
Date:	Fri, 5 Jul 2013 13:12:37 -0700
From:	Sören Brinkmann <soren.brinkmann@...inx.com>
To:	Baruch Siach <baruch@...s.co.il>
CC:	John Stultz <john.stultz@...aro.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	Michal Simek <michal.simek@...inx.com>
Subject: Re: [PATCH] clocksource/cadence_ttc: Reuse clocksource as sched_clock

On Thu, Jul 04, 2013 at 06:30:26AM +0300, Baruch Siach wrote:
> Hi Soren,
> 
> On Wed, Jul 03, 2013 at 02:50:16PM -0700, Soren Brinkmann wrote:
> > Reuse the TTC clocksource timer as sched clock, too. Since only a single
> > sched clock is supported in Linux, this feature optional and can be
> > selected through Kconfig.
> > 
> > Signed-off-by: Soren Brinkmann <soren.brinkmann@...inx.com>
> > ---
> 
> [...]
> 
> > diff --git a/drivers/clocksource/cadence_ttc_timer.c 
> > b/drivers/clocksource/cadence_ttc_timer.c
> > index 4cbe28c..ef0f52b 100644
> > --- a/drivers/clocksource/cadence_ttc_timer.c
> > +++ b/drivers/clocksource/cadence_ttc_timer.c
> > @@ -22,6 +22,7 @@
> >  #include <linux/of_irq.h>
> >  #include <linux/slab.h>
> >  #include <linux/clk-provider.h>
> > +#include <asm/sched_clock.h>
> 
> This has changed to linux/sched_clock.h in the tip tree. See 
> https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git/commit/?h=timers/core&id=38ff87f77af0b5a93fc8581cff1d6e5692ab8970.
Is that change going into Linus' tree during the 3.11 merge window? The
tip tree is missing some changes to the TTC which went in through the
armsoc tree.

	Sören


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