Re: mdelay question

Alan Cox (alan@lxorguk.ukuu.org.uk)
Fri, 26 Mar 1999 01:59:33 +0000 (GMT)

> a sigifigant time (ie, 0.25 to 1 second) if you haven't disabled
> interrupts? ie, will you completely monopolize the cpu, or will the
> scheduler kick you off until sometime shortly after the delay runs out?

If you want more than about 1/100th of a second use a loop yielding CPU
time. Better yet sleep and wakeup if your card can IRQ the event

At minimum

unsigned long time=jiffies+(msec*HZ)/1000;

while(time_before(time, jiffies))
schedule();

or in an irq/bh set a timer to go off

Alan

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