On 16/11/15 06:36, Zhangbo (Oscar) wrote: > Hi all: > I'd like to SLEEP a while in xen kernel during VMEXIT, the easiest way is > to call "udelay" or "mdelay" there. However, these 2 functions use busy wait > to sleep, which is a waste. > In linux kernel, there's a function named 'schedule_timeout', allowing the > CPU to run other tasks during SLEEPING. > So, is there any equivalent function to "schedule_timeout" in xen kernel ? > Thanks in advance. >
There is not any equivalent. Paths through Xen are synchronous (scheduling vCPUS has different requirements/constraints than scheduling userspace tasks), and there are no concepts of tasks like the Linux kernel has. Your only option is to busy wait, but there is probably a different way of achieving what you are attempting to do. ~Andrew _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
