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Date:   Sun, 12 Apr 2020 13:24:21 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Jiaxun Yang <jiaxun.yang@...goat.com>
Cc:     kbuild-all@...ts.01.org, linux-mips@...r.kernel.org,
        "dietmar.eggemann@....com, Jiaxun Yang" <jiaxun.yang@...goat.com>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Huacai Chen <chenhc@...ote.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Florian Fainelli <f.fainelli@...il.com>,
        Robert Richter <rric@...nel.org>,
        Sudeep Holla <sudeep.holla@....com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Marc Zyngier <maz@...nel.org>,
        Paul Burton <paulburton@...nel.org>,
        Allison Randal <allison@...utok.net>,
        Enrico Weigelt <info@...ux.net>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        Vladimir Kondratiev <vladimir.kondratiev@...el.com>,
        Paul Cercueil <paul@...pouillou.net>,
        Zhou Yanjie <zhouyanjie@...o.com>,
        周琰杰 (Zhou Yanjie) 
        <zhouyanjie@...yeetech.com>, YunQiang Su <syq@...ian.org>,
        Arnd Bergmann <arnd@...db.de>,
        Serge Semin <fancer.lancer@...il.com>,
        Matt Redfearn <matt.redfearn@...s.com>,
        Steve Winslow <swinslow@...il.com>,
        Alexios Zavras <alexios.zavras@...el.com>,
        Richard Fontana <rfontana@...hat.com>,
        Peter Xu <peterx@...hat.com>,
        afzal mohammed <afzal.mohd.ma@...il.com>,
        Kamal Dasu <kdasu.kdev@...il.com>,
        Oleksij Rempel <linux@...pel-privat.de>,
        linux-kernel@...r.kernel.org,
        bcm-kernel-feedback-list@...adcom.com, oprofile-list@...ts.sf.net,
        linux-pm@...r.kernel.org
Subject: Re: [PATCH v2 05/11] MIPS: Switch to arch_topology

Hi Jiaxun,

I love your patch! Yet something to improve:

[auto build test ERROR on driver-core/driver-core-testing]
[also build test ERROR on pm/linux-next linus/master next-20200411]
[cannot apply to tip/perf/core tip/irq/core v5.6]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Jiaxun-Yang/MIPS-Topology-DeviceTree-CPU-rework-v2/20200412-113308
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git a10c9c710f9ecea87b9f4bbb837467893b4bef01
config: mips-allnoconfig (attached as .config)
compiler: mips-linux-gcc (GCC) 9.3.0
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=9.3.0 make.cross ARCH=mips 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@...el.com>

Note: the linux-review/Jiaxun-Yang/MIPS-Topology-DeviceTree-CPU-rework-v2/20200412-113308 HEAD 8e8e9d4f7aa74359f2199773786ffe2fbb7877d0 builds fine.
      It only hurts bisectibility.

All errors (new ones prefixed by >>):

   arch/mips/include/asm/mips-cm.h:398:31: error: passing argument 1 of 'cpu_core' makes integer from pointer without a cast [-Werror=int-conversion]
     398 |  unsigned int core = cpu_core(&cpu_data[cpu]);
         |                               ^~~~~~~~~~~~~~
         |                               |
         |                               struct cpuinfo_mips *
   In file included from include/linux/topology.h:36,
                    from include/linux/gfp.h:9,
                    from include/linux/xarray.h:14,
                    from include/linux/radix-tree.h:18,
                    from include/linux/idr.h:15,
                    from include/linux/kernfs.h:13,
                    from include/linux/sysfs.h:16,
                    from include/linux/kobject.h:20,
                    from include/linux/of.h:17,
                    from arch/mips/kernel/mips-cpc.c:9:
   arch/mips/include/asm/topology.h:68:41: note: expected 'int' but argument is of type 'struct cpuinfo_mips *'
      68 | static inline unsigned int cpu_core(int cpu)
         |                                     ~~~~^~~
   In file included from arch/mips/include/asm/mips-cps.h:104,
                    from arch/mips/kernel/mips-cpc.c:13:
   arch/mips/include/asm/mips-cm.h:399:31: error: passing argument 1 of 'cpu_vpe_id' makes integer from pointer without a cast [-Werror=int-conversion]
     399 |  unsigned int vp = cpu_vpe_id(&cpu_data[cpu]);
         |                               ^~~~~~~~~~~~~~
         |                               |
         |                               struct cpuinfo_mips *
   In file included from include/linux/topology.h:36,
                    from include/linux/gfp.h:9,
                    from include/linux/xarray.h:14,
                    from include/linux/radix-tree.h:18,
                    from include/linux/idr.h:15,
                    from include/linux/kernfs.h:13,
                    from include/linux/sysfs.h:16,
                    from include/linux/kobject.h:20,
                    from include/linux/of.h:17,
                    from arch/mips/kernel/mips-cpc.c:9:
   arch/mips/include/asm/topology.h:73:43: note: expected 'int' but argument is of type 'struct cpuinfo_mips *'
      73 | static inline unsigned int cpu_vpe_id(int cpu)
         |                                       ~~~~^~~
   In file included from arch/mips/include/asm/mips-cps.h:104,
                    from arch/mips/kernel/mips-cpc.c:13:
   arch/mips/include/asm/mips-cm.h: In function 'mips_cm_lock_other_cpu':
   arch/mips/include/asm/mips-cm.h:456:33: error: passing argument 1 of 'cpu_cluster' makes integer from pointer without a cast [-Werror=int-conversion]
     456 |  mips_cm_lock_other(cpu_cluster(d), cpu_core(d), cpu_vpe_id(d), block);
         |                                 ^
         |                                 |
         |                                 struct cpuinfo_mips *
   In file included from include/linux/topology.h:36,
                    from include/linux/gfp.h:9,
                    from include/linux/xarray.h:14,
                    from include/linux/radix-tree.h:18,
                    from include/linux/idr.h:15,
                    from include/linux/kernfs.h:13,
                    from include/linux/sysfs.h:16,
                    from include/linux/kobject.h:20,
                    from include/linux/of.h:17,
                    from arch/mips/kernel/mips-cpc.c:9:
   arch/mips/include/asm/topology.h:63:44: note: expected 'int' but argument is of type 'struct cpuinfo_mips *'
      63 | static inline unsigned int cpu_cluster(int cpu)
         |                                        ~~~~^~~
   In file included from arch/mips/include/asm/mips-cps.h:104,
                    from arch/mips/kernel/mips-cpc.c:13:
   arch/mips/include/asm/mips-cm.h:456:46: error: passing argument 1 of 'cpu_core' makes integer from pointer without a cast [-Werror=int-conversion]
     456 |  mips_cm_lock_other(cpu_cluster(d), cpu_core(d), cpu_vpe_id(d), block);
         |                                              ^
         |                                              |
         |                                              struct cpuinfo_mips *
   In file included from include/linux/topology.h:36,
                    from include/linux/gfp.h:9,
                    from include/linux/xarray.h:14,
                    from include/linux/radix-tree.h:18,
                    from include/linux/idr.h:15,
                    from include/linux/kernfs.h:13,
                    from include/linux/sysfs.h:16,
                    from include/linux/kobject.h:20,
                    from include/linux/of.h:17,
                    from arch/mips/kernel/mips-cpc.c:9:
   arch/mips/include/asm/topology.h:68:41: note: expected 'int' but argument is of type 'struct cpuinfo_mips *'
      68 | static inline unsigned int cpu_core(int cpu)
         |                                     ~~~~^~~
   In file included from arch/mips/include/asm/mips-cps.h:104,
                    from arch/mips/kernel/mips-cpc.c:13:
   arch/mips/include/asm/mips-cm.h:456:61: error: passing argument 1 of 'cpu_vpe_id' makes integer from pointer without a cast [-Werror=int-conversion]
     456 |  mips_cm_lock_other(cpu_cluster(d), cpu_core(d), cpu_vpe_id(d), block);
         |                                                             ^
         |                                                             |
         |                                                             struct cpuinfo_mips *
   In file included from include/linux/topology.h:36,
                    from include/linux/gfp.h:9,
                    from include/linux/xarray.h:14,
                    from include/linux/radix-tree.h:18,
                    from include/linux/idr.h:15,
                    from include/linux/kernfs.h:13,
                    from include/linux/sysfs.h:16,
                    from include/linux/kobject.h:20,
                    from include/linux/of.h:17,
                    from arch/mips/kernel/mips-cpc.c:9:
   arch/mips/include/asm/topology.h:73:43: note: expected 'int' but argument is of type 'struct cpuinfo_mips *'
      73 | static inline unsigned int cpu_vpe_id(int cpu)
         |                                       ~~~~^~~
   arch/mips/kernel/mips-cpc.c: In function 'mips_cpc_lock_other':
>> arch/mips/kernel/mips-cpc.c:97:23: error: passing argument 1 of 'cpu_core' makes integer from pointer without a cast [-Werror=int-conversion]
      97 |  curr_core = cpu_core(&current_cpu_data);
   In file included from include/linux/topology.h:36,
                    from include/linux/gfp.h:9,
                    from include/linux/xarray.h:14,
                    from include/linux/radix-tree.h:18,
                    from include/linux/idr.h:15,
                    from include/linux/kernfs.h:13,
                    from include/linux/sysfs.h:16,
                    from include/linux/kobject.h:20,
                    from include/linux/of.h:17,
                    from arch/mips/kernel/mips-cpc.c:9:
   arch/mips/include/asm/topology.h:68:41: note: expected 'int' but argument is of type 'struct cpuinfo_mips *'
      68 | static inline unsigned int cpu_core(int cpu)
         |                                     ~~~~^~~
   arch/mips/kernel/mips-cpc.c: In function 'mips_cpc_unlock_other':
   arch/mips/kernel/mips-cpc.c:117:23: error: passing argument 1 of 'cpu_core' makes integer from pointer without a cast [-Werror=int-conversion]
     117 |  curr_core = cpu_core(&current_cpu_data);
   In file included from include/linux/topology.h:36,
                    from include/linux/gfp.h:9,
                    from include/linux/xarray.h:14,
                    from include/linux/radix-tree.h:18,
                    from include/linux/idr.h:15,
                    from include/linux/kernfs.h:13,
                    from include/linux/sysfs.h:16,
                    from include/linux/kobject.h:20,
                    from include/linux/of.h:17,
                    from arch/mips/kernel/mips-cpc.c:9:
   arch/mips/include/asm/topology.h:68:41: note: expected 'int' but argument is of type 'struct cpuinfo_mips *'
      68 | static inline unsigned int cpu_core(int cpu)
         |                                     ~~~~^~~
   cc1: all warnings being treated as errors

vim +/cpu_core +97 arch/mips/kernel/mips-cpc.c

76ae658465c231 Paul Burton   2014-02-14   87  
76ae658465c231 Paul Burton   2014-02-14   88  void mips_cpc_lock_other(unsigned int core)
76ae658465c231 Paul Burton   2014-02-14   89  {
6b89d22e742aa3 Matt Redfearn 2016-09-07   90  	unsigned int curr_core;
d6219420480b75 Matt Redfearn 2016-09-07   91  
d6219420480b75 Matt Redfearn 2016-09-07   92  	if (mips_cm_revision() >= CM_REV_CM3)
d6219420480b75 Matt Redfearn 2016-09-07   93  		/* Systems with CM >= 3 lock the CPC via mips_cm_lock_other */
d6219420480b75 Matt Redfearn 2016-09-07   94  		return;
d6219420480b75 Matt Redfearn 2016-09-07   95  
76ae658465c231 Paul Burton   2014-02-14   96  	preempt_disable();
f875a832d20285 Paul Burton   2017-08-12  @97  	curr_core = cpu_core(&current_cpu_data);
76ae658465c231 Paul Burton   2014-02-14   98  	spin_lock_irqsave(&per_cpu(cpc_core_lock, curr_core),
76ae658465c231 Paul Burton   2014-02-14   99  			  per_cpu(cpc_core_lock_flags, curr_core));
829ca2be9c55c7 Paul Burton   2017-08-12  100  	write_cpc_cl_other(core << __ffs(CPC_Cx_OTHER_CORENUM));
78a54c4d8e5a79 Paul Burton   2015-09-22  101  
78a54c4d8e5a79 Paul Burton   2015-09-22  102  	/*
78a54c4d8e5a79 Paul Burton   2015-09-22  103  	 * Ensure the core-other region reflects the appropriate core &
78a54c4d8e5a79 Paul Burton   2015-09-22  104  	 * VP before any accesses to it occur.
78a54c4d8e5a79 Paul Burton   2015-09-22  105  	 */
78a54c4d8e5a79 Paul Burton   2015-09-22  106  	mb();
76ae658465c231 Paul Burton   2014-02-14  107  }
76ae658465c231 Paul Burton   2014-02-14  108  

:::::: The code at line 97 was first introduced by commit
:::::: f875a832d2028523f9b53c261b67e05a359bab8b MIPS: Abstract CPU core & VP(E) ID access through accessor functions

:::::: TO: Paul Burton <paul.burton@...tec.com>
:::::: CC: Ralf Baechle <ralf@...ux-mips.org>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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