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Date:   Sat, 31 Dec 2016 11:59:12 +0800
From:   kbuild test robot <lkp@...el.com>
To:     David Carrillo-Cisneros <davidcc@...gle.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        "x86@...nel.org" <x86@...nel.org>, Ingo Molnar <mingo@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Andi Kleen <ak@...ux.intel.com>,
        Kan Liang <kan.liang@...el.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Borislav Petkov <bp@...e.de>,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Vikas Shivappa <vikas.shivappa@...ux.intel.com>,
        Paul Turner <pjt@...gle.com>,
        Stephane Eranian <eranian@...gle.com>,
        David Carrillo-Cisneros <davidcc@...gle.com>
Subject: Re: [PATCH] perf/core: only check cpuctx with cgroup events during
 cgroup switch

Hi David,

[auto build test ERROR on tip/perf/core]
[also build test ERROR on v4.10-rc1 next-20161224]
[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/David-Carrillo-Cisneros/perf-core-only-check-cpuctx-with-cgroup-events-during-cgroup-switch/20161231-103433
config: x86_64-randconfig-s1-12311108 (attached as .config)
compiler: gcc-4.4 (Debian 4.4.7-8) 4.4.7
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All error/warnings (new ones prefixed by >>):

   kernel/events/core.c: In function 'perf_event_init_all_cpus':
   kernel/events/core.c:10587: error: 'cgrp_cpuctx_list' undeclared (first use in this function)
   kernel/events/core.c:10587: error: (Each undeclared identifier is reported only once
   kernel/events/core.c:10587: error: for each function it appears in.)
>> kernel/events/core.c:10587: error: type defaults to 'int' in declaration of 'type name'
>> kernel/events/core.c:10587: warning: cast from pointer to integer of different size
>> kernel/events/core.c:10587: error: type defaults to 'int' in declaration of 'type name'

vim +10587 kernel/events/core.c

 10581			mutex_init(&swhash->hlist_mutex);
 10582			INIT_LIST_HEAD(&per_cpu(active_ctx_list, cpu));
 10583	
 10584			INIT_LIST_HEAD(&per_cpu(pmu_sb_events.list, cpu));
 10585			raw_spin_lock_init(&per_cpu(pmu_sb_events.lock, cpu));
 10586	
 10587			INIT_LIST_HEAD(&per_cpu(cgrp_cpuctx_list, cpu));
 10588			INIT_LIST_HEAD(&per_cpu(sched_cb_list, cpu));
 10589		}
 10590	}

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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