Christian Borntraeger wrote: > Am Donnerstag, 15. November 2007 schrieb Avi Kivity: > >>> + if ((p->flags & PF_VCPU) && (irq_count() - hardirq_offset == 0)) >>> > [...] > >> What's irq_count()? Is it defined to ignore the timer tick? Or is that >> hardirq_offset? >> > > hardirq_offset is used to ignore the timer tick. > irq_count is defined in hardirq.h: > > #define irq_count() (preempt_count() & (HARDIRQ_MASK | SOFTIRQ_MASK)) > > So irq_count() - hardirq_offset is not zero if a hardirq or a softirq is > running. By subtracting hardirq_offset (the timer tick sets it to > HARDIRQ_OFFSET) it also makes sure, that the timer tick does not count as > hardirq. > This seems to do the trick. > >
Ah, ok. Thanks for the explanation. -- error compiling committee.c: too many arguments to function ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
