linux-kernel - Re: [PATCH 2/6] drivers: perf: hisi: Add support for HiSilicon SoC uncore PMU driver

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Date:   Wed, 28 Jun 2017 09:49:53 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Shaokun Zhang <zhangshaokun@...ilicon.com>
Cc:     kbuild-all@...org, mark.rutland@....com, will.deacon@....com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-doc@...r.kernel.org, linuxarm@...wei.com,
        Shaokun Zhang <zhangshaokun@...ilicon.com>,
        Anurup M <anurup.m@...wei.com>
Subject: Re: [PATCH 2/6] drivers: perf: hisi: Add support for HiSilicon SoC
 uncore PMU driver

Hi Shaokun,

[auto build test ERROR on next-20170619]
[also build test ERROR on v4.12-rc7]
[cannot apply to linus/master linux/master arm64/for-next/core v4.12-rc6 v4.12-rc5 v4.12-rc4]
[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/Shaokun-Zhang/Add-HiSilicon-SoC-uncore-Performance-Monitoring-Unit-driver/20170628-070841
config: x86_64-allmodconfig (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   drivers/perf/hisilicon/hisi_uncore_pmu.c: In function 'hisi_read_scl_and_ccl_id':
>> drivers/perf/hisilicon/hisi_uncore_pmu.c:72:10: error: implicit declaration of function 'read_cpuid_mpidr' [-Werror=implicit-function-declaration]
     mpidr = read_cpuid_mpidr();
             ^~~~~~~~~~~~~~~~
>> drivers/perf/hisilicon/hisi_uncore_pmu.c:73:14: error: 'MPIDR_MT_BITMASK' undeclared (first use in this function)
     if (mpidr & MPIDR_MT_BITMASK) {
                 ^~~~~~~~~~~~~~~~
   drivers/perf/hisilicon/hisi_uncore_pmu.c:73:14: note: each undeclared identifier is reported only once for each function it appears in
>> drivers/perf/hisilicon/hisi_uncore_pmu.c:75:14: error: implicit declaration of function 'MPIDR_AFFINITY_LEVEL' [-Werror=implicit-function-declaration]
       *scl_id = MPIDR_AFFINITY_LEVEL(mpidr, 3);
                 ^~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/read_cpuid_mpidr +72 drivers/perf/hisilicon/hisi_uncore_pmu.c

    66	
    67	/* Read Super CPU cluster and CPU cluster ID from MPIDR_EL1 */
    68	void hisi_read_scl_and_ccl_id(u32 *scl_id, u32 *ccl_id)
    69	{
    70		u64 mpidr;
    71	
  > 72		mpidr = read_cpuid_mpidr();
  > 73		if (mpidr & MPIDR_MT_BITMASK) {
    74			if (scl_id)
  > 75				*scl_id = MPIDR_AFFINITY_LEVEL(mpidr, 3);
    76			if (ccl_id)
    77				*ccl_id = MPIDR_AFFINITY_LEVEL(mpidr, 2);
    78		} else {

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