From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: Preemptive Kernel and MPC8xx ??? From: Jaap-Jan Boor To: Steven Scholz Cc: "linuxppc-embedded@lists.linuxppc.org" In-Reply-To: <3FC1BAC8.6030305@imc-berlin.de> References: <3FC0A1D3.70706@imc-berlin.de> <3FC1BAC8.6030305@imc-berlin.de> Content-Type: text/plain Message-Id: <1069667203.31339.146.camel@linpc003.aimsys.nl> Mime-Version: 1.0 Date: Mon, 24 Nov 2003 10:46:43 +0100 Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: On Mon, 2003-11-24 at 09:01, Steven Scholz wrote: > Hi, > > >> is somebody actually using the preemptive kernel patches ... > >> > > Yes I do on 2.4.20 and 2.4.22 from kernel.org. So far all seems > > to work but didn't do any measurements on it. > So you're using vanilla 2.4.22 on your MPC8xx board!? yes, am I stupid? Currently I use smc uart, scc ethernet and a modified cpm_spi driver (from the great Denx) with interrupt handling, my 850 board boots ok from nfsroot > > > (I both use the preempt and low-latency patches) > Sound interessting. > Could you please give me a link to find the mentioned "low-latency patches". it comes from Andrew Morton's page http://www.zip.com.au/~akpm/linux/schedlat.html I you have to enable this by hand in arch/ppc/config.in (look at arch/i386/config.in) with bool 'Low latency scheduling' CONFIG_LOLAT dep_bool 'Control low latency with sysctl' CONFIG_LOLAT_SYSCTL $CONFIG_LOLAT > > Thanks, > > Steven ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/