Hello,
If no external event is there to interrupt your module, you can implement
simple function to sleep number of ticks:
Note: Each tick = 1000/HZ where HZ = scheduler frequency (defined in
asm/param.h)
void dev_wait(unsigned long ticks)
{
unsigned long awake = jiffies+ticks;
current->policy |= SCHED_YIELD
while(awake > jiffies)
schedule();
}
jiffies is a kernel variable that gets incremented every scheduler tick.
Regards,
Konstantyn
-----Original Message-----
From: kernelnewbies-bounce@xxxxxxxxxxxx
[mailto:kernelnewbies-bounce@xxxxxxxxxxxx] On Behalf Of Karthik Subramanian
Sent: Monday, November 29, 2004 9:55 PM
To: kernelnewbies
Subject: Re: How do I make a kernel module "sleep" without affecting other
kernel modules?
Thanks Greg, but it looks like the version of the kernel I'm using
doesn't have msleep.
I realize that I should've been a little more specific:
I'm using the linux kernel version 2.4.18-14.
What I need to do is this - one kernel module has to wait for another
kernel module to do some processing and set a flag. So I'm trying to
get the listening kernel module to sleep for some time.
Am I doing this the right way at all, or is there a better way of doing
this?
Thanks!
Regards,
Karthik.
On Mon, 29 Nov 2004 16:48:27 -0800, Greg KH <greg@xxxxxxxxx> wrote:
> On Fri, Nov 26, 2004 at 09:27:09AM +0530, Karthik Subramanian wrote:
> > Hi Folks,
> >
> > I'm a *total* newbie, and would appreciate any help I get!
> >
> > I have a kernel module, and I need to make it suspend its execution
> > for a specified period of time (say 10 seconds). How do I do this?
>
> Did you look at the msleep() function?
>
> That should do what you want.
>
> Good luck,
>
> greg k-h
>
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