Tsutomu OWA wrote:
Hi Ingo,
Please consider for inclusion in your rt tree.
This series of patches fixes boot and runntime errors/warnings for powerpc (esp. 64 bit). This applies to linux-2.6.20, patch-2.6.20-rt8 and previous my patch set; http://ozlabs.org/pipermail/linuxppc-dev/2007-March/032640.html http://lkml.org/lkml/2007/3/6/503
Compile and boot tested on celleb (Cell Reference set) for both PREEMPT_RT=y and PREEMPT_NONE=y.
CONFIG_MCOUNT, CONFIG_LATENCY_TRACE and other tracing options nor CONFIG_GENERIC_TIME,
There is PowerPC genTOD patch and it's incorporated into -rt (don't know it works for Cell) but it breaks TOD vsyscalls. Several months ago I've posted patches removing them for the time being:
http://ozlabs.org/pipermail/linuxppc-dev/2006-November/027686.html and I've heard that this issue is being worked on now by John Stultz. Here's also a patch implemeting read_persitent_clock(): http://www.tglx.de/projects/hrtimers/2.6.18/broken-out/gtod-persistent-clock-support-ppc.patch
clockevents etc are not yet ported.
Note that there *is* PowerPC clockevents driver already (don't know if it works for Cell) -- it just never got merged to -rt:
http://ozlabs.org/pipermail/linuxppc-dev/2006-November/027794.html http://ozlabs.org/pipermail/linuxppc-dev/2006-November/027852.html
Comments and suggestions are welcome.
Thanks in advance. -- owa TOSHIBA, Software Engineering Center.
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