[coreboot] Exposing performance data to user space/systemd

[Paul Menzel]

Dear coreboot folks,


as LinuxTag approaches and some of the systemd developers are going to
be there, I remembered the discussion how systemd only supports exposing
performance data on EFI systems [1].

Christian already brought up coreboot/SeaBIOS in that discussion. H.
Peter Anvin (Syslinux) also voiced a need for a having that for non-EFI
systems.

Christin, are there any news?

Thanks to the CBMEM console, the cbmem utility can read, and the timer
work, we have performance data available now. If I am not mistaken,
Chrome OS also supports reading these values. So maybe such an interface
could be designed during LinuxTag and implemented afterward.

If I am right about Chrome OS, do the developers have any suggestions?
Are you content with your interface and can it be generalized for
different boot loaders?


Thanks,

Paul


[1] https://plus.google.com/115547683951727699051/posts/dXs8rrFQkLd
[2] http://www.freedesktop.org/wiki/Software/systemd/BootLoaderInterface/
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