Quoting r. Roland Dreier <[EMAIL PROTECTED]>:
> Subject: Re: [openib-general] Re: Re: Userspace testing results (manykernels,
> many svn trees)
>
> Michael> I just added some cycle calibration code to
> Michael> get_cpu_mhz(). Check it out (you can just run
> Michael> clock_test).
>
> Seems to work well. On the same JS20 system:
>
> Warning: measured CPU frequency value14.317 differs from nominal 2194.62
> 1 sec = 1.00254e+06 usec
> 1 sec = 1.00203e+06 usec
>
> The only minor issue is:
>
> get_clock.c: In function get_clock.c:97: warning: long long int format,
> long unsigned int arg (arg 4)
>
> - R.
What about 32 bit?
I see this in timex.h:
asm volatile (
"98: mftb %0\n"
"99:\n"
".section __ftr_fixup,\"a\"\n"
" .long %1\n"
" .long 0\n"
" .long 98b\n"
" .long 99b\n"
".previous"
: "=r" (ret) : "i" (CPU_FTR_601));
Could some PPC gurus here chime up on what this does?
Cant I just "mftb %0, 268"?
--
MST
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