linux-kernel - Re: [v2] mm: make allocation counters per-order

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Date:   Sun, 16 Jul 2017 21:55:35 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Roman Gushchin <guro@...com>
Cc:     kbuild-all@...org, Mel Gorman <mgorman@...hsingularity.net>,
        linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>,
        Johannes Weiner <hannes@...xchg.org>,
        Michal Hocko <mhocko@...e.com>,
        Vladimir Davydov <vdavydov.dev@...il.com>,
        Rik van Riel <riel@...hat.com>, kernel-team@...com,
        linux-kernel@...r.kernel.org
Subject: Re: [v2] mm: make allocation counters per-order

Hi Roman,

[auto build test WARNING on mmotm/master]
[also build test WARNING on v4.13-rc1 next-20170714]
[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/Roman-Gushchin/mm-make-allocation-counters-per-order/20170716-213429
base:   git://git.cmpxchg.org/linux-mmotm.git master
config: s390-allyesconfig (attached as .config)
compiler: s390x-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=s390 

All warnings (new ones prefixed by >>):

>> arch/s390//appldata/appldata_mem.c:70:15: warning: return type defaults to 'int' [-Wreturn-type]
    static inline sum_pgalloc_events(u64 *pgalloc, unsigned long *ev)
                  ^~~~~~~~~~~~~~~~~~
   arch/s390//appldata/appldata_mem.c: In function 'sum_pgalloc_events':
>> arch/s390//appldata/appldata_mem.c:78:1: warning: control reaches end of non-void function [-Wreturn-type]
    }
    ^

vim +/int +70 arch/s390//appldata/appldata_mem.c

    68	
    69	#ifdef CONFIG_PER_ORDER_ALLOC_COUNTERS
  > 70	static inline sum_pgalloc_events(u64 *pgalloc, unsigned long *ev)
    71	{
    72		int order;
    73	
    74		for (order = 1; order < MAX_ORDER; ++order) {
    75			pgalloc += ev[PGALLOC_NORMAL + order * MAX_NR_ZONES] << order;
    76			pgalloc += ev[PGALLOC_DMA + order * MAX_NR_ZONES] << order;
    77		}
  > 78	}
    79	#else
    80	static inline sum_pgalloc_events(u64 *pgalloc, unsigned long *ev)
    81	{
    82	}
    83	#endif
    84	

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

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