Hi Chris, On Wed, May 11, 2011 at 6:22 AM, <chris@xxxxxxxxxxxxxxxx> wrote: > Hi list, > > I've been looking for the code that increments the jiffies variable as > well as the code that connects a timer interrupt to the function that > increments the variable. I'm working with the ARM architecture in case > that makes a difference. I was also wondering, how many jiffies are > there? Right now I'm finding that if I disable the local timer for the > boot CPU (during boot) the jiffies variable stop incrementing. I always > assumed the global timer was supposed to increment a single jiffies > variable. I'm working with an old, modified, version of QEMU so I'm > leaning towards a QEMU bug for this problem. It's updated here: <http://lxr.linux.no/linux+v2.6.38/kernel/timer.c#L1304> The machine description has a .timer entry, which points to a timer initialization function. We use clock events, so it gets tied in through there. Sorry for being vague - I'm only mildly familiar with that particular code. There is some documentation and background over here: <http://lxr.linux.no/linux+v2.6.38/Documentation/timers/highres.txt> -- Dave Hylands Shuswap, BC, Canada http://www.davehylands.com _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
