On Sat, Jul 04, 2015 at 05:26:47PM +0800, kbuild test robot wrote: > tree: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > head: 14a6f1989dae9445d4532941bdd6bbad84f4c8da > commit: 3b242c66ccbd60cf47ab0e8992119d9617548c23 x86: mm: enable deferred struct page initialisation on x86-64 > date: 3 days ago > config: x86_64-randconfig-x006-201527 (attached as .config) > reproduce: > git checkout 3b242c66ccbd60cf47ab0e8992119d9617548c23 > # save the attached .config to linux build tree > make ARCH=x86_64 > > All warnings (new ones prefixed by >>): > > mm/page_alloc.c: In function 'early_page_uninitialised': > >> mm/page_alloc.c:247:6: warning: unused variable 'nid' [-Wunused-variable] > int nid = early_pfn_to_nid(pfn); We can silence the warning with something like patch below. But I'm not sure it worth it. diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 754c25966a0a..746a6a7b0535 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -911,7 +911,7 @@ extern char numa_zonelist_order[]; #ifndef CONFIG_NEED_MULTIPLE_NODES extern struct pglist_data contig_page_data; -#define NODE_DATA(nid) (&contig_page_data) +#define NODE_DATA(nid) ((void)nid, &contig_page_data) #define NODE_MEM_MAP(nid) mem_map #else /* CONFIG_NEED_MULTIPLE_NODES */ -- Kirill A. Shutemov -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>