Peter Teoh wrote:
On Fri, Apr 11, 2008 at 4:57 PM, Scott Lovenberg
<[EMAIL PROTECTED]> wrote:
Yeah, FWIW, none of the server distros compile preemption in; it's only
really for desktop responsiveness, and even then, I think its value may be
marginal (at this time - I think it will mature).
On Sat, Apr 12, 2008 at 11:58 PM, Patrick McManus <[EMAIL PROTECTED]> wrote:
> Hi,
>
>
> On Sat, 2008-04-12 at 23:10 +0800, Peter Teoh wrote:
> > On Sat, Apr 12, 2008 at 9:53 PM, Patrick McManus <[EMAIL PROTECTED]> wrote:
> > > no. without CONFIG_PREEMPT kernel code is not pre-emptable. Userspa
On Fri, Apr 11, 2008 at 4:56 PM, Roberto A. Foglietta
<[EMAIL PROTECTED]> wrote:
> 2008/4/11, Peter Teoh <[EMAIL PROTECTED]>:
>
> > On Thu, Apr 10, 2008 at 3:32 PM, bhanu nani <[EMAIL PROTECTED]> wrote:
> >
> > > Hi all,
> > >
> > > I am trying to test kernel preemption in my driver. When I
On Sat, Apr 12, 2008 at 2:29 PM, Peter Teoh <[EMAIL PROTECTED]> wrote:
> > 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
> > resp
Hi...
I hope I give you truly correct answer...
On Fri, Apr 11, 2008 at 11:40 PM, bhanu nani <[EMAIL PROTECTED]> wrote:
> Hi Guys,
>
> I am not sure whether this API is avialable to user space but this
> code snippet is part of Kernel module.
>
>
> > > Test code:
> > > --
> > >
On Fri, 2008-04-11 at 09:40 -0700, bhanu nani wrote:
> code snippet is part of Kernel module.
>
> > > Test code:
> > > --
> > > read()
> > > {
> > >if(down_interruptible())
> > >return error;
> > >mdelay(1);
> > >up();
> > > }
> > >
> This is my my r
Hi Guys,
I am not sure whether this API is avialable to user space but this
code snippet is part of Kernel module.
> > Test code:
> > --
> > read()
> > {
> >if(down_interruptible())
> >return error;
> >mdelay(1);
> >up();
> > }
> >
> > With this code
2008/4/11, Peter Teoh <[EMAIL PROTECTED]>:
> On Thu, Apr 10, 2008 at 3:32 PM, bhanu nani <[EMAIL PROTECTED]> 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
Peter Teoh wrote:
On Thu, Apr 10, 2008 at 3:32 PM, bhanu nani <[EMAIL PROTECTED]> 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
prem
On Thu, Apr 10, 2008 at 3:32 PM, bhanu nani <[EMAIL PROTECTED]> 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 disable
Hi...
On Thu, Apr 10, 2008 at 2:32 PM, bhanu nani <[EMAIL PROTECTED]> 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
Hi,
> Test code:
> --
> read()
> {
>if(down_interruptible())
>return error;
>mdelay(1);
>up();
> }
>
> With this code in place, I try to do a 'CTRL+C' when it hangs at that
> delay. It does not respond to my 'CTRL + C'.
>
> Where am I missing the preempt
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