Re: [PATCH v2 2/2] powerpc/powernv : Disable subcore for UP configs
From: Srivatsa S. Bhat
Date: Fri Jun 06 2014 - 06:30:05 EST
On 06/06/2014 03:52 PM, Shreyas B. Prabhu wrote:
> Build throws following errors when CONFIG_SMP=n
> arch/powerpc/platforms/powernv/subcore.c: In function âcpu_update_split_modeâ:
> arch/powerpc/platforms/powernv/subcore.c:274:15: error: âsetup_max_cpusâ undeclared (first use in this function)
> arch/powerpc/platforms/powernv/subcore.c:285:5: error: lvalue required as left operand of assignment
>
> 'setup_max_cpus' variable is relevant only on SMP, so there is no point
> working around it for UP. Furthermore, subcore itself is relevant only
> on SMP and hence the better solution is to exclude subcore.o and
> subcore-asm.o for UP builds.
>
> Signed-off-by: Shreyas B. Prabhu <shreyas@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@xxxxxxxxxxxxxxxxxx>
Regards,
Srivatsa S. Bhat
> ---
> Changes in v2:
> Excluding subcore-asm.o which is part of the subcore feature for UP configs.
>
> arch/powerpc/platforms/powernv/Makefile | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/powerpc/platforms/powernv/Makefile b/arch/powerpc/platforms/powernv/Makefile
> index 4ad0d34..d55891f 100644
> --- a/arch/powerpc/platforms/powernv/Makefile
> +++ b/arch/powerpc/platforms/powernv/Makefile
> @@ -1,9 +1,9 @@
> obj-y += setup.o opal-takeover.o opal-wrappers.o opal.o opal-async.o
> obj-y += opal-rtc.o opal-nvram.o opal-lpc.o opal-flash.o
> obj-y += rng.o opal-elog.o opal-dump.o opal-sysparam.o opal-sensor.o
> -obj-y += opal-msglog.o subcore.o subcore-asm.o
> +obj-y += opal-msglog.o
>
> -obj-$(CONFIG_SMP) += smp.o
> +obj-$(CONFIG_SMP) += smp.o subcore.o subcore-asm.o
> obj-$(CONFIG_PCI) += pci.o pci-p5ioc2.o pci-ioda.o
> obj-$(CONFIG_EEH) += eeh-ioda.o eeh-powernv.o
> obj-$(CONFIG_PPC_SCOM) += opal-xscom.o
>
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