From: Tony Lindgren <tony@atomide.com>
To: Kyungmin Park <kmpark@infradead.org>
Cc: linux-omap-open-source@linux.omap.com
Subject: Re: [PATCH] Make dyntick work again
Date: Fri, 12 Oct 2007 13:06:12 -0700 [thread overview]
Message-ID: <20071012200612.GE7979@atomide.com> (raw)
In-Reply-To: <002c01c80c74$9f0f5160$e1ac580a@swcenter.sec.samsung.co.kr>
Hi,
* Kyungmin Park <kmpark@infradead.org> [071011 19:07]:
> Hi,
>
> Umm, there's a problem, I can't boot with timer32k.
> It halts at here.
<snip>
> It's also can't boot 2.6.22, umm I will track this one.
Hmm, works on n800 which is 2420. Maybe it's some 2430 related issue?
> Anyway, I used the mpu timer and here's the dyntick result. (mpu also support the oneshot in the code)
> Is it the right results?
>
> / # grep time /proc/interrupts ; sleep 10; grep time /proc/interrupts
> 37: 714 INTC gp timer
> 37: 787 INTC gp timer
> / # grep time /proc/interrupts ; sleep 10; grep time /proc/interrupts
> 37: 880 INTC gp timer
> 37: 959 INTC gp timer
Yes, (959 - 880) / 10 = 7 ticks per second. We should be able to get
down to ~2 ticks per second with an idle system already, so sounds
like there are some kernel timers running.
Time to try powertop on omap!
Tony
next prev parent reply other threads:[~2007-10-12 20:06 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-11 20:32 [PATCH] Make dyntick work again Tony Lindgren
2007-10-12 2:05 ` Kyungmin Park
2007-10-12 14:47 ` Dirk Behme
2007-10-12 20:07 ` Tony Lindgren
2007-10-12 20:06 ` Tony Lindgren [this message]
2007-10-12 20:16 ` Woodruff, Richard
2007-10-12 20:22 ` Tony Lindgren
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