On Wed, 20 May 2020 03:43:55 +0800 kbuild test robot <lkp(a)intel.com> wrote:
tree:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: fb57b1fabcb28f358901b2df90abd2b48abc1ca8
commit: aa3238a152d1646868ac81bee4eee08ba39594de [9340/10701] mm: free_area_init: allow
defining max_zone_pfn in descending order
config: arc-randconfig-r011-20200519 (attached as .config)
compiler: arc-elf-gcc (GCC) 9.3.0
reproduce:
wget
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout aa3238a152d1646868ac81bee4eee08ba39594de
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc
If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp(a)intel.com>
All warnings (new ones prefixed by >>, old ones prefixed by <<):
arch/arc/mm/init.c:39:13: warning: no previous prototype for 'arc_get_mem_sz'
[-Wmissing-prototypes]
39 | long __init arc_get_mem_sz(void)
| ^~~~~~~~~~~~~~
>> arch/arc/mm/init.c:80:6: warning: no previous prototype for
'arch_has_descending_max_zone_pfns' [-Wmissing-prototypes]
80 | bool arch_has_descending_max_zone_pfns(void)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/arc/mm/init.c:91:13: warning: no previous prototype for 'setup_arch_memory'
[-Wmissing-prototypes]
Thanks. This should do it:
---
a/include/linux/mm.h~mm-free_area_init-allow-defining-max_zone_pfn-in-descending-order-fix-2-fix
+++ a/include/linux/mm.h
@@ -2464,6 +2464,7 @@ extern void setup_per_cpu_pageset(void);
extern int min_free_kbytes;
extern int watermark_boost_factor;
extern int watermark_scale_factor;
+extern bool arch_has_descending_max_zone_pfns(void);
/* nommu.c */
extern atomic_long_t mmap_pages_allocated;
_