Messages in this thread | | | Date | Tue, 13 Mar 2007 10:11:59 +0100 | From | Heiko Carstens <> | Subject | Re: /sys/devices/system/cpu/cpuX/online are missing |
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On Tue, Mar 13, 2007 at 10:03:50AM +0100, Heiko Carstens wrote: > On Tue, Mar 13, 2007 at 01:39:25AM +0100, Andreas Schwab wrote: > > Giuliano Pochini <pochini@denise.shiny.it> writes: > > > > > I had a look at arch/powerpc/kernel/smp.c but I'm not familiar at all with > > > those parts of the kernel. > > > > See arch/powerpc/kernel/sysfs.c:topology_init. I don't think there is > > anything to do here. You probably don't have CONFIG_HOTPLUG_CPU enabled. > > I was referring to arch/ppc not arch/powerpc. But it seems that arch/ppc > doesn't support cpu hotplug anyway. So I guess it's indeed just a missing > config option. > > Grepping a bit further shows that arm suffered by the change that inverted > the logic if the 'online' attribute for cpus should appear. Since arm > supports cpu hotplug but the patch left arm out, it doesn't work there > anymore (cc'ing arm people: changeset 72486f1f8f0a2bc828b9d30cf4690cf2dd6807fc > is most probably disabling cpu hotplug support on arm like it did on s390).
Should have cc'ed Suresh Siddha who caused the breakage ;) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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