From: Dimitri Sivanich <sivanich@sgi.com>
To: john stultz <johnstul@us.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 6/6 v6] SGI RTC: add clocksource driver
Date: Tue, 3 Mar 2009 14:25:06 -0600 [thread overview]
Message-ID: <20090303202506.GA31426@sgi.com> (raw)
In-Reply-To: <1236110492.6068.22.camel@localhost>
On Tue, Mar 03, 2009 at 12:01:32PM -0800, john stultz wrote:
> On Tue, 2009-03-03 at 09:22 -0600, Dimitri Sivanich wrote:
> > +
> > +static struct clocksource clocksource_uv = {
> > + .name = RTC_NAME,
> > + .rating = 400,
> > + .read = uv_read_rtc,
> > + .mask = (cycle_t)UVH_RTC_REAL_TIME_CLOCK_MASK,
> > + .shift = 10,
>
>
> What is the expected value for sn_rtc_cycles_per_second ?
>
> I ask because a shift value of 10 seems a bit low. It could very well be
> appropriate, but I just wanted to check.
>
Likely in the range of 20,000,000 - 40,000,000.
next prev parent reply other threads:[~2009-03-03 20:25 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-03 15:10 [PATCH 0/6 v6] SGI RTC: add clocksource/clockevent driver and generic vector Dimitri Sivanich
2009-03-03 15:13 ` [PATCH 1/6 v6] SGI RTC: add generic system interrupt Dimitri Sivanich
2009-03-03 15:15 ` [PATCH 2/6 v6] SGI RTC: export clocksource_unregister Dimitri Sivanich
2009-03-03 15:16 ` [PATCH 3/6 v6] SGI RTC: export clockevents_register_device Dimitri Sivanich
2009-03-03 15:18 ` [PATCH 4/6 v6] SGI RTC: export schedule_on_each_cpu Dimitri Sivanich
2009-03-03 15:20 ` [PATCH 5/6 v6] SGI RTC: loop through installed UV blades Dimitri Sivanich
2009-03-03 15:22 ` [PATCH 6/6 v6] SGI RTC: add clocksource driver Dimitri Sivanich
2009-03-03 15:35 ` Ingo Molnar
2009-03-03 21:59 ` H. Peter Anvin
2009-03-03 20:01 ` john stultz
2009-03-03 20:25 ` Dimitri Sivanich [this message]
2009-03-03 15:34 ` [PATCH 1/6 v6] SGI RTC: add generic system interrupt Ingo Molnar
2009-03-03 17:39 ` Dimitri Sivanich
2009-03-03 18:52 ` Ingo Molnar
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