On Fri, 2009-10-30 at 10:52 +0530, Gautham R Shenoy wrote: > Hi, > > This is version 5 of patch series that provides a framework to choose the > state a pseries CPU must be put to when it is offlined. > > Previous versions can be found here: > Version 4: http://lkml.org/lkml/2009/10/9/59 > Version 3: http://lkml.org/lkml/2009/9/15/164 > Version 2: http://lkml.org/lkml/2009/8/28/102 > Version 1: http://lkml.org/lkml/2009/8/6/236 > > Changes from the previous version include: > - Rebased against Nathan Fontenot's latest "pseries kernel handling of dynamic > logical paritioning v4" patches found here: > http://lkml.org/lkml/2009/10/21/98
I can't merge them right now because afaik, Nathan patches are still not quite ready. So we need to either get a final version of Nathan patches something like tomorrow or you need to rebase your series on current -next by the end of the week, or I'm afraid it's going to miss the next merge window. Cheers, Ben. > - Added boot-time option to disable putting the offlined vcpus into an > extended H_CEDE state. > > - Addressed Ben's comments regarding the if-else sequencing in > pseries_mach_cpu_die(). > > - Addition of comments for pseries_cpu_die() to distinguish it from > pseries_mach_cpu_die() > > Also, > > - This approach addresses Peter Z's objections regarding layering > violations. The user simply offlines the cpu and doesn't worry about what > state the CPU should be put into. That part is automatically handled by the > kernel. > > - It does not add any additional sysfs interface instead uses the existing > sysfs interface to offline CPUs. > > - On platforms which do not have support for ceding the vcpu with a > latency specifier value, the offlining mechanism defaults to the current > method of calling rtas_stop_self(). > > The patchset has been tested on the available pseries platforms and it works > as per the expectations. I believe that the patch set is ready for inclusion. > --- > > Gautham R Shenoy (4): > pseries: Serialize cpu hotplug operations during deactivate Vs > deallocate > pseries: Add code to online/offline CPUs of a DLPAR node. > pSeries: Add hooks to put the CPU into an appropriate offline state > pSeries: extended_cede_processor() helper function. > > > Documentation/cpu-hotplug.txt | 6 + > arch/powerpc/include/asm/lppaca.h | 9 + > arch/powerpc/platforms/pseries/dlpar.c | 129 ++++++++++++++++ > arch/powerpc/platforms/pseries/hotplug-cpu.c | 182 > ++++++++++++++++++++++- > arch/powerpc/platforms/pseries/offline_states.h | 18 ++ > arch/powerpc/platforms/pseries/plpar_wrappers.h | 22 +++ > arch/powerpc/platforms/pseries/smp.c | 19 ++ > arch/powerpc/xmon/xmon.c | 3 > drivers/base/cpu.c | 2 > include/linux/cpu.h | 13 ++ > 10 files changed, 387 insertions(+), 16 deletions(-) > create mode 100644 arch/powerpc/platforms/pseries/offline_states.h > _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
