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* Pandu Poluan <pandu@××××××.info> [130920 03:45]: |
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> Hello list! |
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> |
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> Does anyone know the meaning of the 'number between brackets' in the |
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> "power management" line of /proc/cpuinfo? |
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> |
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> For instance (I snipped the "flags" line to not clutter the email: |
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> |
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> processor : 0 |
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> vendor_id : AuthenticAMD |
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> cpu family : 21 |
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> model : 2 |
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> model name : AMD Opteron(tm) Processor 6386 SE |
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> stepping : 0 |
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> cpu MHz : 2800.110 |
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> cache size : 2048 KB |
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> fdiv_bug : no |
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> hlt_bug : no |
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> f00f_bug : no |
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> coma_bug : no |
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> fpu : yes |
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> fpu_exception : yes |
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> cpuid level : 13 |
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> wp : yes |
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> flags : --snip-- |
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> bogomips : 5631.71 |
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> clflush size : 64 |
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> cache_alignment : 64 |
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> address sizes : 48 bits physical, 48 bits virtual |
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> power management: ts ttp tm 100mhzsteps hwpstate [9] [10] |
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> |
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> What's "[9]" and "[10]" supposed to mean? |
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> |
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> (Note: The OS is not actually Gentoo, but this list is sooo |
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> knowledgeable, and methinks the output of /proc/cpuinfo is quite |
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> universal...) |
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|
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I don't know for sure but looking in arch/x86/cpu/{powerflags,proc}.c it |
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looks like your kernel doesn't have a text description for power flag |
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bits 9 and 10. |
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|
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In Linux 3.11.1 they are: |
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|
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[9] - "cpb", /* core performance boost */ |
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[10] - "eff_freq_ro", /* Readonly aperf/mperf */ |
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|
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Todd |
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