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On Sun, Jan 13, 2008 at 06:10:52AM -0500, Andrew Paprocki wrote: > I started debugging a problem I was having with my sky2 network driver > under 2.6.23.13. The investigation led me to find that the HPET timer > wasn't working at all, causing the sky2 driver to not work properly. > Simple example:> > am2:/sys/devices/system/clocksource/clocksource0# cat current_clocksource > jiffies> am2:/sys/devices/system/clocksource/clocksource0# time sleep 1 > real 0m1.000s> user 0m0.000s> sys 0m0.000s> am2:/sys/devices/system/clocksource/clocksource0# echo tsc > current_clocksource > am2:/sys/devices/system/clocksource/clocksource0# time sleep 1 > real 0m1.005s > user 0m0.004s > sys 0m0.000s > am2:/sys/devices/system/clocksource/clocksource0# echo hpet > > current_clocksource > am2:/sys/devices/system/clocksource/clocksource0# time sleep 1 > <hangs indefinetly...> > > Running strace shows it blocked on nanosleep(). I'm building the > kernel with the processor type set to Athalon64. I've built it with > and without SMP and high-res timers enabled and I get the same result. > My previous 2.6.18-4 kernel works because it does not install HPET as > the default timer. The same behavior occurs in 2.6.24-rc7 git head. > I've attached the config/dmesg below. > It seems the HPET timer was not being assigned any IRQs at all. Can you try the patch at http://lkml.org/lkml/2008/1/12/128 ? Thanks, -- regards, Dhaval | ||||||||||||
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