linux-kernel - Re: [PATCH v3 2/2] powerpc: Enable CPU_FTR_ASYM

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Date:   Mon, 16 Jul 2018 10:55:36 +0530
From:   Gautham R Shenoy <ego@...ux.vnet.ibm.com>
To:     kbuild test robot <lkp@...el.com>
Cc:     "Gautham R. Shenoy" <ego@...ux.vnet.ibm.com>, kbuild-all@...org,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Michael Neuling <mikey@...ling.org>,
        Vaidyanathan Srinivasan <svaidy@...ux.vnet.ibm.com>,
        Akshay Adiga <akshay.adiga@...ux.vnet.ibm.com>,
        Shilpasri G Bhat <shilpa.bhat@...ux.vnet.ibm.com>,
        "Oliver O'Halloran" <oohall@...il.com>,
        Nicholas Piggin <npiggin@...il.com>,
        Murilo Opsfelder Araujo <muriloo@...ux.ibm.com>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 2/2] powerpc: Enable CPU_FTR_ASYM_SMT for interleaved
 big-cores


On Wed, Jul 11, 2018 at 04:32:30PM +0800, kbuild test robot wrote:
> Hi Gautham,
> 
> Thank you for the patch! Yet something to improve:
> 
> [auto build test ERROR on powerpc/next]
> [also build test ERROR on v4.18-rc4 next-20180710]
> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
> 
> url:    https://github.com/0day-ci/linux/commits/Gautham-R-Shenoy/powerpc-Detect-the-presence-of-big-cores-via-ibm-thread-groups/20180706-174756
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
> config: powerpc-g5_defconfig (attached as .config)
> compiler: powerpc64-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
> reproduce:
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # save the attached .config to linux build tree
>         GCC_VERSION=7.2.0 make.cross ARCH=powerpc 
> 
> All errors (new ones prefixed by >>):
> 
>    In file included from include/linux/static_key.h:1:0,
>                     from include/linux/context_tracking_state.h:6,
>                     from include/linux/vtime.h:5,
>                     from include/linux/hardirq.h:8,
>                     from include/linux/interrupt.h:11,
>                     from include/linux/serial_core.h:25,
>                     from include/linux/serial_8250.h:14,
>                     from arch/powerpc/kernel/setup-common.c:33:
>    arch/powerpc/kernel/setup-common.c: In function 'smp_setup_cpu_maps':
> >> arch/powerpc/kernel/setup-common.c:777:25: error: 'cpu_feature_keys' undeclared (first use in this function); did you mean 'setup_feature_keys'?
>       static_branch_enable(&cpu_feature_keys[key]);

Ok, so this needs to be enabled only on CONFIG_PPC_PSERIES and
CONFIG_PPC_POWERNV. Will fix this.


--
Thanks and Regards
gautham.