Re: [PATCH 2/3] mm: add find_alloc_contig_pages() interface

From: kbuild test robot
Date: Tue Apr 17 2018 - 10:20:37 EST

Hi Mike,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on mmotm/master]
[also build test ERROR on v4.17-rc1 next-20180417]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

base: git:// master
config: sparc-defconfig (attached as .config)
compiler: sparc-linux-gcc (GCC) 7.2.0
wget -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=sparc

All errors (new ones prefixed by >>):

In file included from include/linux/slab.h:15:0,
from include/linux/irq.h:21,
from include/asm-generic/hardirq.h:13,
from arch/sparc/include/asm/hardirq_32.h:11,
from arch/sparc/include/asm/hardirq.h:7,
from include/linux/hardirq.h:9,
from include/linux/interrupt.h:11,
from include/linux/kernel_stat.h:9,
from arch/sparc/kernel/irq_32.c:15:
include/linux/gfp.h:580:15: error: unknown type name 'page'
static inline page *find_alloc_contig_pages(unsigned int order, gfp_t gfp,
>> include/linux/gfp.h:585:13: error: 'free_contig_pages' defined but not used [-Werror=unused-function]
static void free_contig_pages(struct page *page, unsigned long nr_pages)
cc1: all warnings being treated as errors

vim +/free_contig_pages +585 include/linux/gfp.h

571 #if (defined(CONFIG_MEMORY_ISOLATION) && defined(CONFIG_COMPACTION)) || defined(CONFIG_CMA)
572 /* The below functions must be run on a range from a single zone. */
573 extern int alloc_contig_range(unsigned long start, unsigned long end,
574 unsigned migratetype, gfp_t gfp_mask);
575 extern void free_contig_range(unsigned long pfn, unsigned long nr_pages);
576 extern struct page *find_alloc_contig_pages(unsigned int order, gfp_t gfp,
577 int nid, nodemask_t *nodemask);
578 extern void free_contig_pages(struct page *page, unsigned long nr_pages);
579 #else
> 580 static inline page *find_alloc_contig_pages(unsigned int order, gfp_t gfp,
581 int nid, nodemask_t *nodemask)
582 {
583 return NULL;
584 }
> 585 static void free_contig_pages(struct page *page, unsigned long nr_pages)
586 {
587 }
588 #endif

0-DAY kernel test infrastructure Open Source Technology Center Intel Corporation

Attachment: .config.gz
Description: application/gzip