Re: [PATCH v3 01/11] mm/mempolicy: implement the sysfs-based weighted_interleave interface

Hi Gregory,

kernel test robot noticed the following build errors:

[auto build test ERROR on akpm-mm/mm-everything]
[also build test ERROR on geert-m68k/for-next geert-m68k/for-linus deller-parisc/for-next powerpc/next powerpc/fixes s390/features jcmvbkbc-xtensa/xtensa-for-next arnd-asm-generic/master linus/master tip/x86/asm v6.7-rc5 next-20231214]
[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/Gregory-Price/mm-mempolicy-implement-the-sysfs-based-weighted_interleave-interface/20231214-064236
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20231213224118.1949-2-gregory.price%40memverge.com
patch subject: [PATCH v3 01/11] mm/mempolicy: implement the sysfs-based weighted_interleave interface
config: x86_64-randconfig-161-20231214 (https://download.01.org/0day-ci/archive/20231214/202312141733.PALHOosm-lkp@intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231214/202312141733.PALHOosm-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot [off-list ref]
| Closes: https://lore.kernel.org/oe-kbuild-all/202312141733.PALHOosm-lkp@intel.com/ (local)

All errors (new ones prefixed by >>):

   In file included from include/linux/kobject.h:20,
                    from include/linux/energy_model.h:7,
                    from include/linux/device.h:16,
                    from include/linux/node.h:18,
                    from include/linux/cpu.h:17,
                    from include/linux/static_call.h:135,
                    from include/linux/tracepoint.h:22,
                    from include/trace/events/tlb.h:9,
                    from arch/x86/include/asm/mmu_context.h:10,
                    from include/linux/mmu_context.h:5,
                    from include/linux/cpuset.h:18,
                    from mm/mempolicy.c:83:
   mm/mempolicy.c: In function 'add_weight_node':

quoted

mm/mempolicy.c:3145:28: error: 'struct iw_node_attr' has no member named 'attr'

    3145 |  sysfs_attr_init(&node_attr->attr);
         |                            ^~
   include/linux/sysfs.h:55:3: note: in definition of macro 'sysfs_attr_init'
      55 |  (attr)->key = &__key;    \
         |   ^~~~

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for DRM_I915_DEBUG_GEM
   Depends on [n]: HAS_IOMEM [=y] && DRM_I915 [=m] && EXPERT [=y] && DRM_I915_WERROR [=n]
   Selected by [m]:
   - DRM_I915_DEBUG [=y] && HAS_IOMEM [=y] && DRM_I915 [=m] && EXPERT [=y] && !COMPILE_TEST [=n]


vim +3145 mm/mempolicy.c

  3129	
  3130	static int add_weight_node(int nid, struct kobject *wi_kobj)
  3131	{
  3132		struct iw_node_attr *node_attr;
  3133		char *name;
  3134	
  3135		node_attr = kzalloc(sizeof(*node_attr), GFP_KERNEL);
  3136		if (!node_attr)
  3137			return -ENOMEM;
  3138	
  3139		name = kasprintf(GFP_KERNEL, "node%d", nid);
  3140		if (!name) {
  3141			kfree(node_attr);
  3142			return -ENOMEM;
  3143		}
  3144	

3145		sysfs_attr_init(&node_attr->attr);

  3146		node_attr->kobj_attr.attr.name = name;
  3147		node_attr->kobj_attr.attr.mode = 0644;
  3148		node_attr->kobj_attr.show = node_show;
  3149		node_attr->kobj_attr.store = node_store;
  3150		node_attr->nid = nid;
  3151	
  3152		if (sysfs_create_file(wi_kobj, &node_attr->kobj_attr.attr)) {
  3153			kfree(node_attr->kobj_attr.attr.name);
  3154			kfree(node_attr);
  3155			pr_err("failed to add attribute to weighted_interleave\n");
  3156			return -ENOMEM;
  3157		}
  3158	
  3159		node_attrs[nid] = node_attr;
  3160		return 0;
  3161	}
  3162	

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