Hello, in UML kernel I get a long cpu using loop in __getnstimeofday() (kernel/time/timekeeping.c:315) in the call of timespec_add_ns(), when I left the host kernel suspended to ram for a few hours and resume again. this is because it seems like the tk->xtime_sec wasn't updated yet, but the nsecs were. nsecs can be as high as 8111000111000111000l
the function timespec_add_ns() (include/linux/time.h:266) will call __iter_div_u64_rem() which has an optimized loop for the case that the dividend is not much bigger as the divisior. but this isn't the case for resume from ram on the host kernel. any ideas how to fix this? is it possible to intercept the resume from ram and update the timekeeper->xtime_sec somehow? or can the um arch somehow overwrite timespec_add_ns() to always use div_u64_rem() instead? with kind regards PS: repost on these lists, because nobody did respond to my original email. ------------------------------------------------------------------------------ Comprehensive Server Monitoring with Site24x7. Monitor 10 servers for $9/Month. Get alerted through email, SMS, voice calls or mobile push notifications. Take corrective actions from your mobile device. http://p.sf.net/sfu/Zoho _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
