Hi hezhongkun,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on tip/sched/core]
[also build test WARNING on linus/master v6.0-rc3 next-20220901]
[cannot apply to tj-cgroup/for-next]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/hezhongkun/cgroup-cpuset-Add-a-new-isolated-mems-policy-type/20220902-143512
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 53aa930dc4bae6aa269951bd37103083145d6691
config: mips-allyesconfig
compiler: mips-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/7b7fbf5ae59ebc703a8d545fabd305563c0f42f6
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review hezhongkun/cgroup-cpuset-Add-a-new-isolated-mems-policy-type/20220902-143512
        git checkout 7b7fbf5ae59ebc703a8d545fabd305563c0f42f6
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash kernel/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   In file included from include/linux/sched.h:22,
                    from include/linux/ratelimit.h:6,
                    from include/linux/dev_printk.h:16,
                    from include/linux/device.h:15,
                    from include/linux/node.h:18,
                    from include/linux/cpu.h:17,
                    from kernel/cgroup/cpuset.c:25:
   kernel/cgroup/cpuset.c: In function 'update_nodemasks_hier':
   kernel/cgroup/cpuset.c:1867:54: error: 'struct mempolicy' has no member named 'w'
    1867 |                                         cp->mempolicy->w.user_nodemask);
         |                                                      ^~
   include/linux/nodemask.h:163:56: note: in definition of macro 'nodes_and'
     163 |                         __nodes_and(&(dst), &(src1), &(src2), MAX_NUMNODES)
         |                                                        ^~~~
   kernel/cgroup/cpuset.c: In function 'cpuset_change_task_cs_mpol':
   kernel/cgroup/cpuset.c:2477:12: error: 'struct task_struct' has no member named 'il_prev'
    2477 |         tsk->il_prev = 0;
         |            ^~
   kernel/cgroup/cpuset.c: In function 'cpuset_mpol_write':
   kernel/cgroup/cpuset.c:2525:63: error: 'struct mempolicy' has no member named 'w'
    2525 |                 nodes_and(cs_allowed, cs->effective_mems, mpol->w.user_nodemask);
         |                                                               ^~
   include/linux/nodemask.h:163:56: note: in definition of macro 'nodes_and'
     163 |                         __nodes_and(&(dst), &(src1), &(src2), MAX_NUMNODES)
         |                                                        ^~~~
   kernel/cgroup/cpuset.c: In function 'cpuset_mpol_show':
   kernel/cgroup/cpuset.c:2558:26: error: 'struct mempolicy' has no member named 'mode'
    2558 |         if (!mpol || mpol->mode == MPOL_DEFAULT)
         |                          ^~
   kernel/cgroup/cpuset.c:2561:9: error: implicit declaration of function 'mpol_to_str' [-Werror=implicit-function-declaration]
    2561 |         mpol_to_str(buffer, sizeof(buffer), mpol);
         |         ^~~~~~~~~~~
   kernel/cgroup/cpuset.c: In function 'cpuset_css_alloc':
   kernel/cgroup/cpuset.c:2981:15: error: implicit declaration of function 'mpol_dup'; did you mean 'mpol_put'? [-Werror=implicit-function-declaration]
    2981 |         new = mpol_dup(pcs->mempolicy);
         |               ^~~~~~~~
         |               mpol_put
>> kernel/cgroup/cpuset.c:2981:13: warning: assignment to 'struct mempolicy *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
    2981 |         new = mpol_dup(pcs->mempolicy);
         |             ^
   cc1: some warnings being treated as errors


vim +2981 kernel/cgroup/cpuset.c

  2948	
  2949	
  2950	/*
  2951	 *	cpuset_css_alloc - allocate a cpuset css
  2952	 *	cgrp:	control group that the new cpuset will be part of
  2953	 */
  2954	
  2955	static struct cgroup_subsys_state *
  2956	cpuset_css_alloc(struct cgroup_subsys_state *parent_css)
  2957	{
  2958		struct cpuset *cs, *pcs = css_cs(parent_css);
  2959		struct mempolicy *new;
  2960	
  2961		if (!parent_css)
  2962			return &top_cpuset.css;
  2963	
  2964		cs = kzalloc(sizeof(*cs), GFP_KERNEL);
  2965		if (!cs)
  2966			return ERR_PTR(-ENOMEM);
  2967	
  2968		if (alloc_cpumasks(cs, NULL)) {
  2969			kfree(cs);
  2970			return ERR_PTR(-ENOMEM);
  2971		}
  2972	
  2973		__set_bit(CS_SCHED_LOAD_BALANCE, &cs->flags);
  2974		nodes_clear(cs->mems_allowed);
  2975		nodes_clear(cs->effective_mems);
  2976		fmeter_init(&cs->fmeter);
  2977		cs->relax_domain_level = -1;
  2978	
  2979		/*Inherit mempolicy from parent.*/
  2980		spin_lock_irq(&callback_lock);
> 2981		new = mpol_dup(pcs->mempolicy);
  2982	
  2983		if (IS_ERR(new))
  2984			new = NULL;
  2985	
  2986		cs->mempolicy = new;
  2987		spin_unlock_irq(&callback_lock);
  2988	
  2989		/* Set CS_MEMORY_MIGRATE for default hierarchy */
  2990		if (cgroup_subsys_on_dfl(cpuset_cgrp_subsys))
  2991			__set_bit(CS_MEMORY_MIGRATE, &cs->flags);
  2992	
  2993		return &cs->css;
  2994	}
  2995	

-- 
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https://01.org/lkp