Messages in this thread | | | Subject | Re: [patch] fix the softlockup watchdog to actually work | From | Andi Kleen <> | Date | 25 Jul 2007 18:34:54 +0200 |
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Andrew Morton <akpm@linux-foundation.org> writes: > > One possibility is that sched_clock() is bollixed and (say) it's returning > a 32-bit value. That'll cause the softlockup logic to get a bit sick when > time wraps.
FYI, The current ff x86 sched_clock() [which you likely have, it's not mainline] tends to warp backwards by 80-90ms during cpu freq changes on AMD on one of my test systems. I haven't tracked down why it does that yet. Intel or systems with no cpufreq or cpufreq not changing frequencies regularly are not affected
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