linux-kernel - Re: [PATCH v10 09/10] powerpc/perf: Thread IMC PMU functions

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Message-ID: <201706110405.SsDksZd2%fengguang.wu@intel.com>
Date:   Sun, 11 Jun 2017 04:13:13 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Madhavan Srinivasan <maddy@...ux.vnet.ibm.com>
Cc:     kbuild-all@...org, mpe@...erman.id.au,
        linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        stewart@...ux.vnet.ibm.com, eranian@...gle.com,
        benh@...nel.crashing.org, paulus@...ba.org,
        sukadev@...ux.vnet.ibm.com, ego@...ux.vnet.ibm.com,
        mikey@...ling.org, dja@...ens.net, anton@...ba.org,
        Anju T Sudhakar <anju@...ux.vnet.ibm.com>,
        Hemant Kumar <hemant@...ux.vnet.ibm.com>,
        Madhavan Srinivasan <maddy@...ux.vnet.ibm.com>
Subject: Re: [PATCH v10 09/10] powerpc/perf: Thread IMC PMU functions

Hi Anju,

[auto build test ERROR on powerpc/next]
[also build test ERROR on v4.12-rc4 next-20170609]
[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/Madhavan-Srinivasan/IMC-Instrumentation-Support/20170609-183528
base:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
config: powerpc-defconfig (attached as .config)
compiler: powerpc64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=powerpc 

Note: the linux-review/Madhavan-Srinivasan/IMC-Instrumentation-Support/20170609-183528 HEAD 32ada0705ff79986e8ceca5e83dba14c0b620751 builds fine.
      It only hurts bisectibility.

All errors (new ones prefixed by >>):

   In file included from include/linux/compiler.h:62:0,
                    from include/uapi/linux/stddef.h:1,
                    from include/linux/stddef.h:4,
                    from include/uapi/linux/posix_types.h:4,
                    from include/uapi/linux/types.h:13,
                    from include/linux/types.h:5,
                    from include/uapi/linux/perf_event.h:17,
                    from include/linux/perf_event.h:17,
                    from arch/powerpc/perf/imc-pmu.c:13:
   arch/powerpc/perf/imc-pmu.c: In function 'cleanup_all_thread_imc_memory':
>> arch/powerpc/perf/imc-pmu.c:863:31: error: 'cpu' undeclared (first use in this function)
      if (per_cpu(thread_imc_mem, cpu))
                                  ^
   include/linux/compiler-gcc.h:53:26: note: in definition of macro 'RELOC_HIDE'
     (typeof(ptr)) (__ptr + (off));     \
                             ^~~
   include/linux/percpu-defs.h:223:2: note: in expansion of macro 'SHIFT_PERCPU_PTR'
     SHIFT_PERCPU_PTR((ptr), per_cpu_offset((cpu)));   \
     ^~~~~~~~~~~~~~~~
   include/linux/percpu-defs.h:223:26: note: in expansion of macro 'per_cpu_offset'
     SHIFT_PERCPU_PTR((ptr), per_cpu_offset((cpu)));   \
                             ^~~~~~~~~~~~~~
   include/linux/percpu-defs.h:256:29: note: in expansion of macro 'per_cpu_ptr'
    #define per_cpu(var, cpu) (*per_cpu_ptr(&(var), cpu))
                                ^~~~~~~~~~~
   arch/powerpc/perf/imc-pmu.c:863:7: note: in expansion of macro 'per_cpu'
      if (per_cpu(thread_imc_mem, cpu))
          ^~~~~~~
   arch/powerpc/perf/imc-pmu.c:863:31: note: each undeclared identifier is reported only once for each function it appears in
      if (per_cpu(thread_imc_mem, cpu))
                                  ^
   include/linux/compiler-gcc.h:53:26: note: in definition of macro 'RELOC_HIDE'
     (typeof(ptr)) (__ptr + (off));     \
                             ^~~
   include/linux/percpu-defs.h:223:2: note: in expansion of macro 'SHIFT_PERCPU_PTR'
     SHIFT_PERCPU_PTR((ptr), per_cpu_offset((cpu)));   \
     ^~~~~~~~~~~~~~~~
   include/linux/percpu-defs.h:223:26: note: in expansion of macro 'per_cpu_offset'
     SHIFT_PERCPU_PTR((ptr), per_cpu_offset((cpu)));   \
                             ^~~~~~~~~~~~~~
   include/linux/percpu-defs.h:256:29: note: in expansion of macro 'per_cpu_ptr'
    #define per_cpu(var, cpu) (*per_cpu_ptr(&(var), cpu))
                                ^~~~~~~~~~~
   arch/powerpc/perf/imc-pmu.c:863:7: note: in expansion of macro 'per_cpu'
      if (per_cpu(thread_imc_mem, cpu))
          ^~~~~~~

vim +/cpu +863 arch/powerpc/perf/imc-pmu.c

   857	
   858	static void cleanup_all_thread_imc_memory(void)
   859	{
   860		int i;
   861	
   862		for_each_online_cpu(i) {
 > 863			if (per_cpu(thread_imc_mem, cpu))
   864				free_pages(per_cpu(thread_imc_mem, cpu), 0);
   865		}
   866	}

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