Hi Christoph,

FYI, there are new sparse warnings show up in

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/glommer/memcg.git slab-common/kmalloc
head:   f957c1ead131972db578b945e25982f4607da6ba
commit: f957c1ead131972db578b945e25982f4607da6ba [29/30] CK1 [13/13] Common function to create the kmalloc array

+ mm/slab_common.c:274:68: sparse: incorrect type in argument 3 (different base types)
  mm/slab_common.c:274:68:    expected unsigned long [unsigned] flags
  mm/slab_common.c:274:68:    got restricted gfp_t [usertype] flags
  mm/slab_common.c:277:69: sparse: incorrect type in argument 3 (different base types)
  mm/slab_common.c:277:69:    expected unsigned long [unsigned] flags
  mm/slab_common.c:277:69:    got restricted gfp_t [usertype] flags
  mm/slab_common.c:282:65: sparse: incorrect type in argument 3 (different base types)
  mm/slab_common.c:282:65:    expected unsigned long [unsigned] flags
  mm/slab_common.c:282:65:    got restricted gfp_t [usertype] flags
+ mm/slab_common.c:310:56: sparse: restricted gfp_t degrades to integer
  mm/slab_common.c: In function 'create_boot_cache':
  mm/slab_common.c:236:6: warning: format '%ld' expects argument of type 'long int', but argument 3 has type 'size_t' [-Wformat]

vim +274 mm/slab_common.c

55a6b9f9 (Christoph Lameter 2012-09-26  258) #ifdef CONFIG_ZONE_DMA
55a6b9f9 (Christoph Lameter 2012-09-26  259) struct kmem_cache *kmalloc_dma_caches[KMALLOC_SHIFT_HIGH + 1];
55a6b9f9 (Christoph Lameter 2012-09-26  260) EXPORT_SYMBOL(kmalloc_dma_caches);
55a6b9f9 (Christoph Lameter 2012-09-26  261) #endif
55a6b9f9 (Christoph Lameter 2012-09-26  262) 
f957c1ea (Christoph Lameter 2012-09-26  263) /*
f957c1ea (Christoph Lameter 2012-09-26  264)  * Create the kmalloc array. Some of the regular kmalloc arrays
f957c1ea (Christoph Lameter 2012-09-26  265)  * may already have been created because they were needed to
f957c1ea (Christoph Lameter 2012-09-26  266)  * enable allocations for slab creation.
f957c1ea (Christoph Lameter 2012-09-26  267)  */
f957c1ea (Christoph Lameter 2012-09-26  268) void __init create_kmalloc_caches(gfp_t flags)
f957c1ea (Christoph Lameter 2012-09-26  269) {
f957c1ea (Christoph Lameter 2012-09-26  270) 	int i;
f957c1ea (Christoph Lameter 2012-09-26  271) 
f957c1ea (Christoph Lameter 2012-09-26  272) 	/* Caches that are not of the two-to-the-power-of size */
f957c1ea (Christoph Lameter 2012-09-26  273) 	if (KMALLOC_MIN_SIZE <= 32 && !kmalloc_caches[1])
f957c1ea (Christoph Lameter 2012-09-26 @274) 		kmalloc_caches[1] = create_kmalloc_cache(NULL, 96, flags);
f957c1ea (Christoph Lameter 2012-09-26  275) 
f957c1ea (Christoph Lameter 2012-09-26  276) 	if (KMALLOC_MIN_SIZE <= 64 && !kmalloc_caches[2])
f957c1ea (Christoph Lameter 2012-09-26  277) 		kmalloc_caches[2] = create_kmalloc_cache(NULL, 192, flags);
f957c1ea (Christoph Lameter 2012-09-26  278) 
f957c1ea (Christoph Lameter 2012-09-26  279) 	for (i = KMALLOC_SHIFT_LOW; i <= KMALLOC_SHIFT_HIGH; i++)
f957c1ea (Christoph Lameter 2012-09-26  280) 		if (!kmalloc_caches[i])
f957c1ea (Christoph Lameter 2012-09-26  281) 			kmalloc_caches[i] = create_kmalloc_cache(NULL,
f957c1ea (Christoph Lameter 2012-09-26  282) 				       			1 << i, flags);

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0-DAY kernel build testing backend         Open Source Technology Centre
Fengguang Wu, Yuanhan Liu                              Intel Corporation