LWN: Comments on "Driver porting: Timekeeping changes"
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hourly2Driver porting: Timekeeping changes
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2003-02-27T19:59:23+00:00cpeterso
<br>Someone posted a patch on LKML a few years ago and again recently, that started jiffies at -5 minutes instead of 0. That is, the patch would force a jiffy wraparound 5 minutes after boot, every time for all systems. Kernel and driver wraparound bugs would have to be fixed.<p>Does anyone know if there are plans to merge this in Linux 2.5?<br>
Driver porting: Timekeeping changes
http://lwn.net/Articles/23889/rss
2003-02-27T09:13:59+00:00ekj
<i>With 64 bits to work with, jiffies_64 will not wrap around in a time frame that need concern most of us - at least until some future kernel starts using a gigahertz internal clock.</i><p>
Actually, even with a Ghz internal clock a 64-bit counter will still need about 600 years before it ticks over. Even with a 100Ghz internal clock we will experience wrap-around only once every 6 years. Few systems stay up that long.<p>