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. Cheers, -- /roberto -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
