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Date: Wed, 12 Aug 2009 17:22:07 -0600 From: Alex Chiang <achiang@...com> To: Andreas Herrmann <andreas.herrmann3@....com> Cc: Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>, Thomas Gleixner <tglx@...utronix.de>, linux-kernel@...r.kernel.org, Borislav Petkov <borislav.petkov@....com>, Brice Goglin <Brice.Goglin@...ia.fr> Subject: Re: [PATCH 0/8 v5] x86: Adapt CPU topology detection for AMD Magny-Cours Hi Andreas, * Andreas Herrmann <andreas.herrmann3@....com>: > Changes to previous patch set: > - added patch to swap semantic of cpu_node_siblings and core_siblings > - new patch to convert alloc/clear of cpumask to zalloc > - added patch to update cputopology documentation > > Current patch set contains 8 patches: > - patch 1 adapts common code to show cpu_node_id, > cpu_node_siblings and cpu_node_siblings_list in > /sys/devices/system/cpu/cpu*/topology > - patch 2 prepares arch/x86 to provide cpu_node information > - patch 3 sets up cpu_node information for AMD Magny-Cours CPU Do only Magny-Cours have the concept of a 'node' or should Istanbul have nodes too? Here is the output of my system with your patchset applied. First, a representative entry from /proc/cpuinfo. processor : 0 vendor_id : AuthenticAMD cpu family : 16 model : 8 model name : Six-Core AMD Opteron(tm) Processor 8439 SE stepping : 0 cpu MHz : 800.000 cache size : 512 KB physical id : 0 siblings : 6 node id : 0 core id : 0 cpu cores : 6 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 mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nonstop_tsc extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt bogomips : 5586.65 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 I do have the powernow_k8 module loaded too (so ignore the funny MHz output). # lsmod | grep k8 powernow_k8 13764 0 processor 47724 1 powernow_k8 Here is the output with just a few fields selected. # cat /proc/cpuinfo | egrep '^node|^core|processor|^physical|apicid' processor : 0 physical id : 0 node id : 0 core id : 0 apicid : 0 initial apicid : 0 processor : 1 physical id : 1 node id : 0 core id : 0 apicid : 8 initial apicid : 8 processor : 2 physical id : 2 node id : 0 core id : 0 apicid : 16 initial apicid : 16 processor : 3 physical id : 3 node id : 0 core id : 0 apicid : 24 initial apicid : 24 processor : 4 physical id : 4 node id : 0 core id : 0 apicid : 32 initial apicid : 32 processor : 5 physical id : 5 node id : 0 core id : 0 apicid : 40 initial apicid : 40 processor : 6 physical id : 6 node id : 0 core id : 0 apicid : 48 initial apicid : 48 processor : 7 physical id : 7 node id : 0 core id : 0 apicid : 56 initial apicid : 56 processor : 8 physical id : 0 node id : 0 core id : 1 apicid : 1 initial apicid : 1 processor : 9 physical id : 1 node id : 0 core id : 1 apicid : 9 initial apicid : 9 processor : 10 physical id : 2 node id : 0 core id : 1 apicid : 17 initial apicid : 17 processor : 11 physical id : 3 node id : 0 core id : 1 apicid : 25 initial apicid : 25 processor : 12 physical id : 4 node id : 0 core id : 1 apicid : 33 initial apicid : 33 processor : 13 physical id : 5 node id : 0 core id : 1 apicid : 41 initial apicid : 41 processor : 14 physical id : 6 node id : 0 core id : 1 apicid : 49 initial apicid : 49 processor : 15 physical id : 7 node id : 0 core id : 1 apicid : 57 initial apicid : 57 processor : 16 physical id : 0 node id : 0 core id : 2 apicid : 2 initial apicid : 2 processor : 17 physical id : 1 node id : 0 core id : 2 apicid : 10 initial apicid : 10 processor : 18 physical id : 2 node id : 0 core id : 2 apicid : 18 initial apicid : 18 processor : 19 physical id : 3 node id : 0 core id : 2 apicid : 26 initial apicid : 26 processor : 20 physical id : 4 node id : 0 core id : 2 apicid : 34 initial apicid : 34 processor : 21 physical id : 5 node id : 0 core id : 2 apicid : 42 initial apicid : 42 processor : 22 physical id : 6 node id : 0 core id : 2 apicid : 50 initial apicid : 50 processor : 23 physical id : 7 node id : 0 core id : 2 apicid : 58 initial apicid : 58 processor : 24 physical id : 0 node id : 0 core id : 3 apicid : 3 initial apicid : 3 processor : 25 physical id : 1 node id : 0 core id : 3 apicid : 11 initial apicid : 11 processor : 26 physical id : 2 node id : 0 core id : 3 apicid : 19 initial apicid : 19 processor : 27 physical id : 3 node id : 0 core id : 3 apicid : 27 initial apicid : 27 processor : 28 physical id : 4 node id : 0 core id : 3 apicid : 35 initial apicid : 35 processor : 29 physical id : 5 node id : 0 core id : 3 apicid : 43 initial apicid : 43 processor : 30 physical id : 6 node id : 0 core id : 3 apicid : 51 initial apicid : 51 processor : 31 physical id : 7 node id : 0 core id : 3 apicid : 59 initial apicid : 59 processor : 32 physical id : 0 node id : 0 core id : 4 apicid : 4 initial apicid : 4 processor : 33 physical id : 1 node id : 0 core id : 4 apicid : 12 initial apicid : 12 processor : 34 physical id : 2 node id : 0 core id : 4 apicid : 20 initial apicid : 20 processor : 35 physical id : 3 node id : 0 core id : 4 apicid : 28 initial apicid : 28 processor : 36 physical id : 4 node id : 0 core id : 4 apicid : 36 initial apicid : 36 processor : 37 physical id : 5 node id : 0 core id : 4 apicid : 44 initial apicid : 44 processor : 38 physical id : 6 node id : 0 core id : 4 apicid : 52 initial apicid : 52 processor : 39 physical id : 7 node id : 0 core id : 4 apicid : 60 initial apicid : 60 processor : 40 physical id : 0 node id : 0 core id : 5 apicid : 5 initial apicid : 5 processor : 41 physical id : 1 node id : 0 core id : 5 apicid : 13 initial apicid : 13 processor : 42 physical id : 2 node id : 0 core id : 5 apicid : 21 initial apicid : 21 processor : 43 physical id : 3 node id : 0 core id : 5 apicid : 29 initial apicid : 29 processor : 44 physical id : 4 node id : 0 core id : 5 apicid : 37 initial apicid : 37 processor : 45 physical id : 5 node id : 0 core id : 5 apicid : 45 initial apicid : 45 processor : 46 physical id : 6 node id : 0 core id : 5 apicid : 53 initial apicid : 53 processor : 47 physical id : 7 node id : 0 core id : 5 apicid : 61 initial apicid : 61 Thanks. /ac -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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