tree:   git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git stable-rt/v3.14-rt
head:   570cfa0256aae0ce674dc160f2cef4eb72309459
commit: ffb0df41998725bff73537478fbb85b3bbf4a217 [442/450] mm/slub: move slab initialization into irq enabled region
config: i386-randconfig-i1-201533 (attached as .config)
reproduce:
  git checkout ffb0df41998725bff73537478fbb85b3bbf4a217
  # save the attached .config to linux build tree
  make ARCH=i386 

All warnings (new ones prefixed by >>):

   mm/slub.c: In function 'allocate_slab':
>> mm/slub.c:1350:6: warning: unused variable 'idx' [-Wunused-variable]
     int idx, order;
         ^

vim +/idx +1350 mm/slub.c

  1334	
  1335		flags |= __GFP_NOTRACK;
  1336	
  1337		if (node == NUMA_NO_NODE)
  1338			return alloc_pages(flags, order);
  1339		else
  1340			return alloc_pages_exact_node(node, flags, order);
  1341	}
  1342	
  1343	static struct page *allocate_slab(struct kmem_cache *s, gfp_t flags, int node)
  1344	{
  1345		struct page *page;
  1346		struct kmem_cache_order_objects oo = s->oo;
  1347		gfp_t alloc_gfp;
  1348		bool enableirqs;
  1349		void *start, *last, *p;
> 1350		int idx, order;
  1351	
  1352		flags &= gfp_allowed_mask;
  1353	
  1354		enableirqs = (flags & __GFP_WAIT) != 0;
  1355	#ifdef CONFIG_PREEMPT_RT_FULL
  1356		enableirqs |= system_state == SYSTEM_RUNNING;
  1357	#endif
  1358		if (enableirqs)

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