2007/2/5, Rajat Jain <rajat.noida.india@xxxxxxxxx>:
> > Another question - the irqs are disabled at times (like when a > > spinlock is held). Does this cause any lost timer ticks? > > > > I guess so. > Won't this mean a wrong value of "jiffies"?
Yes. I guess so. But I think this does not matter. The frequency of losing timer interrupt is too low to affect the function of jiffies as a counter. The system time is obtained from xtime (rahter than jiffies), which is updated according to a free-source timer at each tick, not simply added with a fixed value. I make the above conclusion based on my own understanding. Maybe someone more familiar with this can give more confident answer. :-)
Regards, Rajat
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