On Fri, Apr 11, 2008 at 4:56 PM, Roberto A. Foglietta <roberto.foglietta@xxxxxxxxx> wrote: > 2008/4/11, Peter Teoh <htmldeveloper@xxxxxxxxx>: > > > On Thu, Apr 10, 2008 at 3:32 PM, bhanu nani <bhanu.lnxnew@xxxxxxxxx> wrote: > > > > > Hi all, > > > > > > I am trying to test kernel preemption in my driver. When I first > > > compiled the Linux kernel and tested it, I found it to be > > > non-preemptible. Later I realised that my kernel was build with > > > premption disabled. I enabled kernel premption in processort section > > > i.e. CONFIG_PREEMPT and rebuild it. > > > > > > First time I read this article: > > http://www.linuxdevices.com/articles/AT8211887833.html > > and I learned tons a lot. > > > > And this: > > > > http://www.ussg.iu.edu/hypermail/linux/kernel/0403.2/0545.html > > > > So I think advisable NOT to set CONFIG_PREEMPT. > > > > For sure is not advisable on a server but in an embedded devices some > I/O locks the system too long if preemption is not configured and > adding a real-time layer is too much effort in order to reduce > response time just some degrees. > Yes, I think you are right.....thanks for the insight sharing, I am learning embedded stuff now....:-). -- Regards, Peter Teoh -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
