Hi yuzhoujian, Thank you for the patch! Yet something to improve: [auto build test ERROR on mmotm/master] [also build test ERROR on v4.17-rc5 next-20180517] [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/ufo19890607/Add-the-memcg-print-oom-info-for-system-oom/20180520-041924 base: git://git.cmpxchg.org/linux-mmotm.git master config: x86_64-randconfig-x003-201820 (attached as .config) compiler: gcc-7 (Debian 7.3.0-16) 7.3.0 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All error/warnings (new ones prefixed by >>): mm/oom_kill.c: In function 'dump_header': >> mm/oom_kill.c:436:29: error: implicit declaration of function 'mem_cgroup_from_task'; did you mean 'mem_cgroup_from_id'? [-Werror=implicit-function-declaration] mem_cgroup_print_oom_info(mem_cgroup_from_task(p), p); ^~~~~~~~~~~~~~~~~~~~ mem_cgroup_from_id >> mm/oom_kill.c:436:29: warning: passing argument 1 of 'mem_cgroup_print_oom_info' makes pointer from integer without a cast [-Wint-conversion] In file included from include/linux/swap.h:9:0, from mm/oom_kill.c:28: include/linux/memcontrol.h:932:1: note: expected 'struct mem_cgroup *' but argument is of type 'int' mem_cgroup_print_oom_info(struct mem_cgroup *memcg, struct task_struct *p) ^~~~~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +436 mm/oom_kill.c 421 422 static void dump_header(struct oom_control *oc, struct task_struct *p) 423 { 424 pr_warn("%s invoked oom-killer: gfp_mask=%#x(%pGg), nodemask=%*pbl, order=%d, oom_score_adj=%hd\n", 425 current->comm, oc->gfp_mask, &oc->gfp_mask, 426 nodemask_pr_args(oc->nodemask), oc->order, 427 current->signal->oom_score_adj); 428 if (!IS_ENABLED(CONFIG_COMPACTION) && oc->order) 429 pr_warn("COMPACTION is disabled!!!\n"); 430 431 cpuset_print_current_mems_allowed(); 432 dump_stack(); 433 if (is_memcg_oom(oc)) 434 mem_cgroup_print_oom_info(oc->memcg, p); 435 else { > 436 mem_cgroup_print_oom_info(mem_cgroup_from_task(p), p); 437 show_mem(SHOW_MEM_FILTER_NODES, oc->nodemask); 438 if (is_dump_unreclaim_slabs()) 439 dump_unreclaimable_slab(); 440 } 441 if (sysctl_oom_dump_tasks) 442 dump_tasks(oc->memcg, oc->nodemask); 443 } 444 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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