[Crash-utility] FW: Number of cpus on ARM
Dave Anderson
anderson at redhat.com
Thu Oct 16 14:06:35 UTC 2014
----- Original Message -----
>
>
> ----- Original Message -----
> > Hi
> >
> > I have tried the arm_get_smp_cpus implementation given below and it works
> > fine on all examples I have tested.
> >
> > What about ARM64? Same update?
>
> Maybe later. ARM64 kdump support is still being developed, and on a live system,
> it seems that I can't offline a cpu:
>
> [root at apm-mustang-ev2-03 cpu7]# cat /sys/devices/system/cpu/cpu7/online
> 1
> [root at apm-mustang-ev2-03 cpu7]# echo 0 > /sys/devices/system/cpu/cpu7/online
> -bash: echo: write error: Operation not supported
> [root at apm-mustang-ev2-03 cpu7]#
>
> So for now I'll just make the change to 32-bit ARM.
>
> Dave
Queued for crash-7.0.9:
https://github.com/crash-utility/crash/commit/25bd7d9bf28c102ebe50908c596047a2a405273b
Dave
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