[coreboot] [HEADS-UP] Rebuild cbmem for correct time stamps

Aaron Durbin adurbin at google.com
Mon Mar 14 22:46:16 CET 2016


On Mon, Mar 14, 2016 at 4:40 PM, Paul Menzel
<paulepanter at users.sourceforge.net> wrote:
> Dear coreboot folks,
>
>
> please make sure to rebuild the utility cbmem with commit 08e920e5
> (util/cbmem: Scale time stamp values correctly) [1]. There was a
> regression present for some months, causing the resulting time stamps
> to be in milliseconds instead of microseconds.

FYI: This regression was only observed on x86 platforms which don't
provide tsc_freq_mhz(). Because of that, the cbmem utility fell back
to using /sysfs on linux which had a unit issue from the commit Paul
referenced.

>
> Most of us probably didn’t notice, because cbmem is rarely rebuild. For
> the others, they were happy, seeing their boot time was a thousand
> times faster. ;-)
>
> Big thanks to Aaron and Martin helping (doing) the fix.
>
>
> Thanks,
>
> Paul
>
>
> [1] https://review.coreboot.org/14086
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