On 2014.01.22 at 19:42 +0100, Peter Zijlstra wrote: > On Wed, Jan 22, 2014 at 07:35:38PM +0100, Markus Trippelsdorf wrote: > > > >FYI it happens on real hardware on my machine: > > > >[ 60.375384] process: using AMD E400 aware idle routine > > > But this is a different issue. I've bisected it to: > > > > commit 20d1c86a57762f0a33a78988e3fc8818316badd4 > > Author: Peter Zijlstra <pet...@infradead.org> > > Date: Fri Nov 29 15:40:29 2013 +0100 > > > > sched/clock, x86: Rewrite cyc2ns() to avoid the need to disable IRQs > > > > Reverting the commit "fixes" the issue: > > Hurm.. what kind of AMD machine is that?
It's an ancient one: processor : 0 vendor_id : AuthenticAMD cpu family : 16 model : 4 model name : AMD Phenom(tm) II X4 955 Processor stepping : 2 microcode : 0x10000db cpu MHz : 800.000 cache size : 512 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 4 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3 dnow constant_tsc rep_good nopl nonstop_tsc extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt hw_pstate npt lbrv svm_lock nrip_save bogomips : 6424.73 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 48 bits physical, 48 bits virtual power management: ts ttp tm stc 100mhzsteps hwpstate -- Markus -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
