From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Rune Torgersen <runet@innovsys.com>
Cc: linuxppc-dev@ozlabs.org, linuxppc-embedded@ozlabs.org
Subject: RE: Override timer interrupt
Date: Tue, 16 Oct 2007 07:58:18 +1000 [thread overview]
Message-ID: <1192485498.11795.41.camel@pasglop> (raw)
In-Reply-To: <DCEAAC0833DD314AB0B58112AD99B93B037D5152@ismail.innsys.innovsys.com>
On Mon, 2007-10-15 at 16:50 -0500, Rune Torgersen wrote:
> Huh? Not in 2.6.18/arch/ppc at least, unless I'm completely
> misundrstanding the code.
> ppc/powerpc seems to be using clocksource_jiffies as the clock source,
> and teh gettimeofday gets xtime + a offset from last jiffie, and xtime
> is updated with a fixed amount per tick.
>
> Things have changed a lot since I last delved deep into this to try to
> ge an accurate freerunning clock (2.6.12).
Hrm... 2.6.18 doesn't have clock sources in the first place, what kernel
are you using ?
Ben.
next prev parent reply other threads:[~2007-10-15 21:58 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-12 20:43 Override timer interrupt Rune Torgersen
2007-10-12 21:30 ` Mark A. Greer
2007-10-12 21:39 ` Rune Torgersen
2007-10-12 21:55 ` Mark A. Greer
2007-10-12 22:58 ` Benjamin Herrenschmidt
2007-10-15 16:49 ` Rune Torgersen
2007-10-15 20:55 ` Benjamin Herrenschmidt
2007-10-15 21:50 ` Rune Torgersen
2007-10-15 21:58 ` Benjamin Herrenschmidt [this message]
2007-10-15 23:30 ` Paul Mackerras
-- strict thread matches above, loose matches on Subject: below --
2007-10-12 20:49 Rune Torgersen
2007-10-12 21:32 ` Mark A. Greer
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