Hi Yang, [auto build test ERROR on mmotm/master] [also build test ERROR on v4.14-rc3 next-20170929] [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/Yang-Shi/oom-capture-unreclaimable-slab-info-in-oom-message/20171007-173639 base: git://git.cmpxchg.org/linux-mmotm.git master config: sh-allnoconfig (attached as .config) compiler: sh4-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705 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 make.cross ARCH=sh All errors (new ones prefixed by >>): mm/slub.c: In function 'get_slabinfo': mm/slub.c:5864:14: error: implicit declaration of function 'node_nr_objs' [-Werror=implicit-function-declaration] nr_objs += node_nr_objs(n); ^~~~~~~~~~~~ >> mm/slub.c:5865:14: error: implicit declaration of function 'count_partial' [-Werror=implicit-function-declaration] nr_free += count_partial(n, count_free); ^~~~~~~~~~~~~ mm/slub.c:5865:31: error: 'count_free' undeclared (first use in this function) nr_free += count_partial(n, count_free); ^~~~~~~~~~ mm/slub.c:5865:31: note: each undeclared identifier is reported only once for each function it appears in cc1: some warnings being treated as errors vim +/count_partial +5865 mm/slub.c 57ed3eda9 Pekka J Enberg 2008-01-01 5850 57ed3eda9 Pekka J Enberg 2008-01-01 5851 /* 57ed3eda9 Pekka J Enberg 2008-01-01 5852 * The /proc/slabinfo ABI 57ed3eda9 Pekka J Enberg 2008-01-01 5853 */ 0d7561c61 Glauber Costa 2012-10-19 5854 void get_slabinfo(struct kmem_cache *s, struct slabinfo *sinfo) 57ed3eda9 Pekka J Enberg 2008-01-01 5855 { 57ed3eda9 Pekka J Enberg 2008-01-01 5856 unsigned long nr_slabs = 0; 205ab99dd Christoph Lameter 2008-04-14 5857 unsigned long nr_objs = 0; 205ab99dd Christoph Lameter 2008-04-14 5858 unsigned long nr_free = 0; 57ed3eda9 Pekka J Enberg 2008-01-01 5859 int node; fa45dc254 Christoph Lameter 2014-08-06 5860 struct kmem_cache_node *n; 57ed3eda9 Pekka J Enberg 2008-01-01 5861 fa45dc254 Christoph Lameter 2014-08-06 5862 for_each_kmem_cache_node(s, node, n) { c17fd13ec Wanpeng Li 2013-07-04 5863 nr_slabs += node_nr_slabs(n); c17fd13ec Wanpeng Li 2013-07-04 @5864 nr_objs += node_nr_objs(n); 205ab99dd Christoph Lameter 2008-04-14 @5865 nr_free += count_partial(n, count_free); 57ed3eda9 Pekka J Enberg 2008-01-01 5866 } 57ed3eda9 Pekka J Enberg 2008-01-01 5867 0d7561c61 Glauber Costa 2012-10-19 5868 sinfo->active_objs = nr_objs - nr_free; 0d7561c61 Glauber Costa 2012-10-19 5869 sinfo->num_objs = nr_objs; 0d7561c61 Glauber Costa 2012-10-19 5870 sinfo->active_slabs = nr_slabs; 0d7561c61 Glauber Costa 2012-10-19 5871 sinfo->num_slabs = nr_slabs; 0d7561c61 Glauber Costa 2012-10-19 5872 sinfo->objects_per_slab = oo_objects(s->oo); 0d7561c61 Glauber Costa 2012-10-19 5873 sinfo->cache_order = oo_order(s->oo); 57ed3eda9 Pekka J Enberg 2008-01-01 5874 } 57ed3eda9 Pekka J Enberg 2008-01-01 5875 :::::: The code at line 5865 was first introduced by commit :::::: 205ab99dd103e3dd5b0964dad8a16dfe2db69b2e slub: Update statistics handling for variable order slabs :::::: TO: Christoph Lameter <clameter@xxxxxxx> :::::: CC: Pekka Enberg <penberg@xxxxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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