Re: [PATCH 02/14] arm64: drop ranges in definition of ARCH_FORCE_MAX_ORDER

kernel test robot
2023-03-23T13:54:04Z

Hi Mike,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on 51551d71edbc998fd8c8afa7312db3d270f5998e]

url: https://github.com/intel-lab-lkp/linux/commits/Mike-Rapoport/arm-reword-ARCH_FORCE_MAX_ORDER-prompt-and-help-text/20230323-172512
base: 51551d71edbc998fd8c8afa7312db3d270f5998e
patch link: https://lore.kernel.org/r/20230323092156.2545741-3-rppt%40kernel.org
patch subject: [PATCH 02/14] arm64: drop ranges in definition of ARCH_FORCE_MAX_ORDER
config: arm64-randconfig-r022-20230322 (https://download.01.org/0day-ci/archive/20230323/202303232149.Chh6KhiI-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/0522f943c071abf1610651ea40405b7489c50987
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Mike-Rapoport/arm-reword-ARCH_FORCE_MAX_ORDER-prompt-and-help-text/20230323-172512
git checkout 0522f943c071abf1610651ea40405b7489c50987
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm64 olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/base/regmap/ drivers/iommu/ fs/proc/ mm/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303232149.Chh6KhiI-lkp@intel.com/

All error/warnings (new ones prefixed by >>):

In file included from include/linux/kernel.h:25,
from mm/mm_init.c:9:
mm/mm_init.c: In function 'find_zone_movable_pfns_for_nodes':
>> include/linux/mmzone.h:33:31: warning: left shift count is negative [-Wshift-count-negative]
33 | #define MAX_ORDER_NR_PAGES (1 << MAX_ORDER)
| ^~
include/linux/math.h:61:25: note: in definition of macro 'roundup'
61 | typeof(y) __y = y; \
| ^
mm/mm_init.c:429:55: note: in expansion of macro 'MAX_ORDER_NR_PAGES'
429 | roundup(required_movablecore, MAX_ORDER_NR_PAGES);
| ^~~~~~~~~~~~~~~~~~
>> include/linux/mmzone.h:33:31: warning: left shift count is negative [-Wshift-count-negative]
33 | #define MAX_ORDER_NR_PAGES (1 << MAX_ORDER)
| ^~
include/linux/math.h:61:25: note: in definition of macro 'roundup'
61 | typeof(y) __y = y; \
| ^
mm/mm_init.c:540:56: note: in expansion of macro 'MAX_ORDER_NR_PAGES'
540 | roundup(zone_movable_pfn[nid], MAX_ORDER_NR_PAGES);
| ^~~~~~~~~~~~~~~~~~
--
In file included from include/linux/gfp.h:7,
from include/linux/mm.h:7,
from mm/debug.c:10:
mm/debug.c: In function '__dump_page':
>> include/linux/mmzone.h:33:31: warning: left shift count is negative [-Wshift-count-negative]
33 | #define MAX_ORDER_NR_PAGES (1 << MAX_ORDER)
| ^~
mm/debug.c:70:44: note: in expansion of macro 'MAX_ORDER_NR_PAGES'
70 | if (page < head || (page >= head + MAX_ORDER_NR_PAGES)) {
| ^~~~~~~~~~~~~~~~~~
--
In file included from include/linux/build_bug.h:5,
from include/linux/container_of.h:5,
from include/linux/list.h:5,
from include/linux/smp.h:12,
from include/linux/kernel_stat.h:5,
from mm/memory.c:42:
mm/memory.c: In function 'clear_huge_page':
>> include/linux/mmzone.h:33:31: warning: left shift count is negative [-Wshift-count-negative]
33 | #define MAX_ORDER_NR_PAGES (1 << MAX_ORDER)
| ^~
include/linux/compiler.h:78:45: note: in definition of macro 'unlikely'
78 | # define unlikely(x) __builtin_expect(!!(x), 0)
| ^
mm/memory.c:5791:44: note: in expansion of macro 'MAX_ORDER_NR_PAGES'
5791 | if (unlikely(pages_per_huge_page > MAX_ORDER_NR_PAGES)) {
| ^~~~~~~~~~~~~~~~~~
mm/memory.c: In function 'copy_user_huge_page':
>> include/linux/mmzone.h:33:31: warning: left shift count is negative [-Wshift-count-negative]
33 | #define MAX_ORDER_NR_PAGES (1 << MAX_ORDER)
| ^~
include/linux/compiler.h:78:45: note: in definition of macro 'unlikely'
78 | # define unlikely(x) __builtin_expect(!!(x), 0)
| ^
mm/memory.c:5843:44: note: in expansion of macro 'MAX_ORDER_NR_PAGES'
5843 | if (unlikely(pages_per_huge_page > MAX_ORDER_NR_PAGES)) {
| ^~~~~~~~~~~~~~~~~~
--
mm/shuffle.c: In function '__shuffle_zone':
>> mm/shuffle.c:86:35: warning: left shift count is negative [-Wshift-count-negative]
86 | const int order_pages = 1 << order;
| ~~^~~~~~~~
--
In file included from include/vdso/const.h:5,
from include/linux/const.h:4,
from include/linux/list.h:9,
from include/linux/wait.h:7,
from include/linux/wait_bit.h:8,
from include/linux/fs.h:6,
from include/linux/debugfs.h:15,
from mm/page_owner.c:2:
mm/page_owner.c: In function 'pagetypeinfo_showmixedcount_print':
>> include/linux/mmzone.h:33:31: warning: left shift count is negative [-Wshift-count-negative]
33 | #define MAX_ORDER_NR_PAGES (1 << MAX_ORDER)
| ^~
include/uapi/linux/const.h:32:50: note: in definition of macro '__ALIGN_KERNEL_MASK'
32 | #define __ALIGN_KERNEL_MASK(x, mask) (((x) + (mask)) & ~(mask))
| ^~~~
include/linux/align.h:8:33: note: in expansion of macro '__ALIGN_KERNEL'
8 | #define ALIGN(x, a) __ALIGN_KERNEL((x), (a))
| ^~~~~~~~~~~~~~
mm/page_owner.c:298:31: note: in expansion of macro 'ALIGN'
298 | pfn = ALIGN(pfn + 1, MAX_ORDER_NR_PAGES);
| ^~~~~
mm/page_owner.c:298:46: note: in expansion of macro 'MAX_ORDER_NR_PAGES'
298 | pfn = ALIGN(pfn + 1, MAX_ORDER_NR_PAGES);
| ^~~~~~~~~~~~~~~~~~
>> include/linux/mmzone.h:33:31: warning: left shift count is negative [-Wshift-count-negative]
33 | #define MAX_ORDER_NR_PAGES (1 << MAX_ORDER)
| ^~
include/uapi/linux/const.h:32:61: note: in definition of macro '__ALIGN_KERNEL_MASK'
32 | #define __ALIGN_KERNEL_MASK(x, mask) (((x) + (mask)) & ~(mask))
| ^~~~
include/linux/align.h:8:33: note: in expansion of macro '__ALIGN_KERNEL'
8 | #define ALIGN(x, a) __ALIGN_KERNEL((x), (a))
| ^~~~~~~~~~~~~~
mm/page_owner.c:298:31: note: in expansion of macro 'ALIGN'
298 | pfn = ALIGN(pfn + 1, MAX_ORDER_NR_PAGES);
| ^~~~~
mm/page_owner.c:298:46: note: in expansion of macro 'MAX_ORDER_NR_PAGES'
298 | pfn = ALIGN(pfn + 1, MAX_ORDER_NR_PAGES);
| ^~~~~~~~~~~~~~~~~~
In file included from include/linux/gfp.h:7,
from include/linux/xarray.h:15,
from include/linux/list_lru.h:14,
from include/linux/fs.h:13:
mm/page_owner.c: In function 'read_page_owner':
>> include/linux/mmzone.h:33:31: warning: left shift count is negative [-Wshift-count-negative]
33 | #define MAX_ORDER_NR_PAGES (1 << MAX_ORDER)
| ^~
mm/page_owner.c:526:43: note: in expansion of macro 'MAX_ORDER_NR_PAGES'
526 | while (!pfn_valid(pfn) && (pfn & (MAX_ORDER_NR_PAGES - 1)) != 0)
| ^~~~~~~~~~~~~~~~~~
>> include/linux/mmzone.h:33:31: warning: left shift count is negative [-Wshift-count-negative]
33 | #define MAX_ORDER_NR_PAGES (1 << MAX_ORDER)
| ^~
mm/page_owner.c:543:29: note: in expansion of macro 'MAX_ORDER_NR_PAGES'
543 | if ((pfn & (MAX_ORDER_NR_PAGES - 1)) == 0 && !pfn_valid(pfn)) {
| ^~~~~~~~~~~~~~~~~~
>> include/linux/mmzone.h:33:31: warning: left shift count is negative [-Wshift-count-negative]
33 | #define MAX_ORDER_NR_PAGES (1 << MAX_ORDER)
| ^~
mm/page_owner.c:544:32: note: in expansion of macro 'MAX_ORDER_NR_PAGES'
544 | pfn += MAX_ORDER_NR_PAGES - 1;
| ^~~~~~~~~~~~~~~~~~
mm/page_owner.c: In function 'init_pages_in_zone':
>> include/linux/mmzone.h:33:31: warning: left shift count is negative [-Wshift-count-negative]
33 | #define MAX_ORDER_NR_PAGES (1 << MAX_ORDER)
| ^~
include/uapi/linux/const.h:32:50: note: in definition of macro '__ALIGN_KERNEL_MASK'
32 | #define __ALIGN_KERNEL_MASK(x, mask) (((x) + (mask)) & ~(mask))
| ^~~~
include/linux/align.h:8:33: note: in expansion of macro '__ALIGN_KERNEL'
8 | #define ALIGN(x, a) __ALIGN_KERNEL((x), (a))
| ^~~~~~~~~~~~~~
mm/page_owner.c:636:31: note: in expansion of macro 'ALIGN'
636 | pfn = ALIGN(pfn + 1, MAX_ORDER_NR_PAGES);
| ^~~~~
mm/page_owner.c:636:46: note: in expansion of macro 'MAX_ORDER_NR_PAGES'
636 | pfn = ALIGN(pfn + 1, MAX_ORDER_NR_PAGES);
| ^~~~~~~~~~~~~~~~~~
>> include/linux/mmzone.h:33:31: warning: left shift count is negative [-Wshift-count-negative]
33 | #define MAX_ORDER_NR_PAGES (1 << MAX_ORDER)
| ^~
include/uapi/linux/const.h:32:61: note: in definition of macro '__ALIGN_KERNEL_MASK'
32 | #define __ALIGN_KERNEL_MASK(x, mask) (((x) + (mask)) & ~(mask))
| ^~~~
include/linux/align.h:8:33: note: in expansion of macro '__ALIGN_KERNEL'
8 | #define ALIGN(x, a) __ALIGN_KERNEL((x), (a))
| ^~~~~~~~~~~~~~
mm/page_owner.c:636:31: note: in expansion of macro 'ALIGN'
636 | pfn = ALIGN(pfn + 1, MAX_ORDER_NR_PAGES);
| ^~~~~
mm/page_owner.c:636:46: note: in expansion of macro 'MAX_ORDER_NR_PAGES'
636 | pfn = ALIGN(pfn + 1, MAX_ORDER_NR_PAGES);
| ^~~~~~~~~~~~~~~~~~
--
In file included from include/linux/kernel.h:26,
from arch/arm64/include/asm/cpufeature.h:22,
from arch/arm64/include/asm/ptrace.h:11,
from arch/arm64/include/asm/irqflags.h:10,
from include/linux/irqflags.h:16,
from include/linux/spinlock.h:59,
from include/linux/mmzone.h:8,
from include/linux/gfp.h:7,
from include/linux/mm.h:7,
from mm/page_isolation.c:6:
mm/page_isolation.c: In function 'isolate_single_pageblock':
>> include/linux/mmzone.h:33:31: warning: left shift count is negative [-Wshift-count-negative]
33 | #define MAX_ORDER_NR_PAGES (1 << MAX_ORDER)
| ^~
include/linux/minmax.h:28:27: note: in definition of macro '__cmp'
28 | #define __cmp(x, y, op) ((x) op (y) ? (x) : (y))
| ^
include/linux/minmax.h:74:25: note: in expansion of macro '__careful_cmp'
74 | #define max(x, y) __careful_cmp(x, y, >)
| ^~~~~~~~~~~~~
mm/page_isolation.c:329:22: note: in expansion of macro 'max'
329 | start_pfn = max(ALIGN_DOWN(isolate_pageblock, MAX_ORDER_NR_PAGES),
| ^~~
include/uapi/linux/const.h:31:41: note: in expansion of macro '__ALIGN_KERNEL_MASK'
31 | #define __ALIGN_KERNEL(x, a) __ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1)
| ^~~~~~~~~~~~~~~~~~~
include/linux/align.h:9:33: note: in expansion of macro '__ALIGN_KERNEL'
9 | #define ALIGN_DOWN(x, a) __ALIGN_KERNEL((x) - ((a) - 1), (a))
| ^~~~~~~~~~~~~~
mm/page_isolation.c:329:26: note: in expansion of macro 'ALIGN_DOWN'
329 | start_pfn = max(ALIGN_DOWN(isolate_pageblock, MAX_ORDER_NR_PAGES),
| ^~~~~~~~~~
mm/page_isolation.c:329:56: note: in expansion of macro 'MAX_ORDER_NR_PAGES'
329 | start_pfn = max(ALIGN_DOWN(isolate_pageblock, MAX_ORDER_NR_PAGES),
| ^~~~~~~~~~~~~~~~~~
>> include/linux/mmzone.h:33:31: warning: left shift count is negative [-Wshift-count-negative]
33 | #define MAX_ORDER_NR_PAGES (1 << MAX_ORDER)
| ^~
include/linux/minmax.h:28:27: note: in definition of macro '__cmp'
28 | #define __cmp(x, y, op) ((x) op (y) ? (x) : (y))
| ^
include/linux/minmax.h:74:25: note: in expansion of macro '__careful_cmp'
74 | #define max(x, y) __careful_cmp(x, y, >)
| ^~~~~~~~~~~~~
mm/page_isolation.c:329:22: note: in expansion of macro 'max'
329 | start_pfn = max(ALIGN_DOWN(isolate_pageblock, MAX_ORDER_NR_PAGES),
| ^~~
include/uapi/linux/const.h:31:41: note: in expansion of macro '__ALIGN_KERNEL_MASK'
31 | #define __ALIGN_KERNEL(x, a) __ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1)
| ^~~~~~~~~~~~~~~~~~~
include/linux/align.h:9:33: note: in expansion of macro '__ALIGN_KERNEL'
9 | #define ALIGN_DOWN(x, a) __ALIGN_KERNEL((x) - ((a) - 1), (a))
| ^~~~~~~~~~~~~~
mm/page_isolation.c:329:26: note: in expansion of macro 'ALIGN_DOWN'
329 | start_pfn = max(ALIGN_DOWN(isolate_pageblock, MAX_ORDER_NR_PAGES),
| ^~~~~~~~~~
mm/page_isolation.c:329:56: note: in expansion of macro 'MAX_ORDER_NR_PAGES'
329 | start_pfn = max(ALIGN_DOWN(isolate_pageblock, MAX_ORDER_NR_PAGES),
| ^~~~~~~~~~~~~~~~~~
>> include/linux/mmzone.h:33:31: warning: left shift count is negative [-Wshift-count-negative]
33 | #define MAX_ORDER_NR_PAGES (1 << MAX_ORDER)
| ^~
include/linux/minmax.h:28:27: note: in definition of macro '__cmp'
28 | #define __cmp(x, y, op) ((x) op (y) ? (x) : (y))
| ^
include/linux/minmax.h:74:25: note: in expansion of macro '__careful_cmp'
74 | #define max(x, y) __careful_cmp(x, y, >)
| ^~~~~~~~~~~~~
mm/page_isolation.c:329:22: note: in expansion of macro 'max'
329 | start_pfn = max(ALIGN_DOWN(isolate_pageblock, MAX_ORDER_NR_PAGES),
| ^~~
include/uapi/linux/const.h:31:41: note: in expansion of macro '__ALIGN_KERNEL_MASK'
31 | #define __ALIGN_KERNEL(x, a) __ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1)
| ^~~~~~~~~~~~~~~~~~~
include/linux/align.h:9:33: note: in expansion of macro '__ALIGN_KERNEL'
9 | #define ALIGN_DOWN(x, a) __ALIGN_KERNEL((x) - ((a) - 1), (a))
| ^~~~~~~~~~~~~~
mm/page_isolation.c:329:26: note: in expansion of macro 'ALIGN_DOWN'
329 | start_pfn = max(ALIGN_DOWN(isolate_pageblock, MAX_ORDER_NR_PAGES),
| ^~~~~~~~~~
mm/page_isolation.c:329:56: note: in expansion of macro 'MAX_ORDER_NR_PAGES'
329 | start_pfn = max(ALIGN_DOWN(isolate_pageblock, MAX_ORDER_NR_PAGES),
| ^~~~~~~~~~~~~~~~~~
>> include/linux/mmzone.h:33:31: warning: left shift count is negative [-Wshift-count-negative]
33 | #define MAX_ORDER_NR_PAGES (1 << MAX_ORDER)
| ^~
include/linux/minmax.h:28:40: note: in definition of macro '__cmp'
28 | #define __cmp(x, y, op) ((x) op (y) ? (x) : (y))
| ^
include/linux/minmax.h:74:25: note: in expansion of macro '__careful_cmp'
74 | #define max(x, y) __careful_cmp(x, y, >)
| ^~~~~~~~~~~~~
mm/page_isolation.c:329:22: note: in expansion of macro 'max'
329 | start_pfn = max(ALIGN_DOWN(isolate_pageblock, MAX_ORDER_NR_PAGES),
| ^~~
include/uapi/linux/const.h:31:41: note: in expansion of macro '__ALIGN_KERNEL_MASK'
31 | #define __ALIGN_KERNEL(x, a) __ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1)
| ^~~~~~~~~~~~~~~~~~~
include/linux/align.h:9:33: note: in expansion of macro '__ALIGN_KERNEL'
9 | #define ALIGN_DOWN(x, a) __ALIGN_KERNEL((x) - ((a) - 1), (a))
| ^~~~~~~~~~~~~~
mm/page_isolation.c:329:26: note: in expansion of macro 'ALIGN_DOWN'
329 | start_pfn = max(ALIGN_DOWN(isolate_pageblock, MAX_ORDER_NR_PAGES),
| ^~~~~~~~~~
mm/page_isolation.c:329:56: note: in expansion of macro 'MAX_ORDER_NR_PAGES'
329 | start_pfn = max(ALIGN_DOWN(isolate_pageblock, MAX_ORDER_NR_PAGES),
| ^~~~~~~~~~~~~~~~~~
>> include/linux/mmzone.h:33:31: warning: left shift count is negative [-Wshift-count-negative]
33 | #define MAX_ORDER_NR_PAGES (1 << MAX_ORDER)
| ^~
include/linux/minmax.h:28:40: note: in definition of macro '__cmp'
28 | #define __cmp(x, y, op) ((x) op (y) ? (x) : (y))
| ^
include/linux/minmax.h:74:25: note: in expansion of macro '__careful_cmp'
74 | #define max(x, y) __careful_cmp(x, y, >)
| ^~~~~~~~~~~~~
mm/page_isolation.c:329:22: note: in expansion of macro 'max'
329 | start_pfn = max(ALIGN_DOWN(isolate_pageblock, MAX_ORDER_NR_PAGES),
| ^~~
include/uapi/linux/const.h:31:41: note: in expansion of macro '__ALIGN_KERNEL_MASK'
31 | #define __ALIGN_KERNEL(x, a) __ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1)
| ^~~~~~~~~~~~~~~~~~~
include/linux/align.h:9:33: note: in expansion of macro '__ALIGN_KERNEL'
9 | #define ALIGN_DOWN(x, a) __ALIGN_KERNEL((x) - ((a) - 1), (a))
| ^~~~~~~~~~~~~~
mm/page_isolation.c:329:26: note: in expansion of macro 'ALIGN_DOWN'
329 | start_pfn = max(ALIGN_DOWN(isolate_pageblock, MAX_ORDER_NR_PAGES),
| ^~~~~~~~~~
mm/page_isolation.c:329:56: note: in expansion of macro 'MAX_ORDER_NR_PAGES'
329 | start_pfn = max(ALIGN_DOWN(isolate_pageblock, MAX_ORDER_NR_PAGES),
| ^~~~~~~~~~~~~~~~~~
>> include/linux/mmzone.h:33:31: warning: left shift count is negative [-Wshift-count-negative]
33 | #define MAX_ORDER_NR_PAGES (1 << MAX_ORDER)
| ^~
include/linux/minmax.h:28:40: note: in definition of macro '__cmp'
28 | #define __cmp(x, y, op) ((x) op (y) ? (x) : (y))
| ^
include/linux/minmax.h:74:25: note: in expansion of macro '__careful_cmp'
74 | #define max(x, y) __careful_cmp(x, y, >)
| ^~~~~~~~~~~~~
mm/page_isolation.c:329:22: note: in expansion of macro 'max'
329 | start_pfn = max(ALIGN_DOWN(isolate_pageblock, MAX_ORDER_NR_PAGES),
| ^~~
include/uapi/linux/const.h:31:41: note: in expansion of macro '__ALIGN_KERNEL_MASK'
31 | #define __ALIGN_KERNEL(x, a) __ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1)
| ^~~~~~~~~~~~~~~~~~~
include/linux/align.h:9:33: note: in expansion of macro '__ALIGN_KERNEL'
9 | #define ALIGN_DOWN(x, a) __ALIGN_KERNEL((x) - ((a) - 1), (a))
| ^~~~~~~~~~~~~~
mm/page_isolation.c:329:26: note: in expansion of macro 'ALIGN_DOWN'
329 | start_pfn = max(ALIGN_DOWN(isolate_pageblock, MAX_ORDER_NR_PAGES),
| ^~~~~~~~~~
mm/page_isolation.c:329:56: note: in expansion of macro 'MAX_ORDER_NR_PAGES'
329 | start_pfn = max(ALIGN_DOWN(isolate_pageblock, MAX_ORDER_NR_PAGES),
| ^~~~~~~~~~~~~~~~~~
>> include/linux/mmzone.h:33:31: warning: left shift count is negative [-Wshift-count-negative]
33 | #define MAX_ORDER_NR_PAGES (1 << MAX_ORDER)
| ^~
include/linux/minmax.h:31:39: note: in definition of macro '__cmp_once'
31 | typeof(x) unique_x = (x); \
| ^
include/linux/minmax.h:74:25: note: in expansion of macro '__careful_cmp'
74 | #define max(x, y) __careful_cmp(x, y, >)
| ^~~~~~~~~~~~~
mm/page_isolation.c:329:22: note: in expansion of macro 'max'
329 | start_pfn = max(ALIGN_DOWN(isolate_pageblock, MAX_ORDER_NR_PAGES),
| ^~~
include/uapi/linux/const.h:31:41: note: in expansion of macro '__ALIGN_KERNEL_MASK'
31 | #define __ALIGN_KERNEL(x, a) __ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1)
| ^~~~~~~~~~~~~~~~~~~
include/linux/align.h:9:33: note: in expansion of macro '__ALIGN_KERNEL'
9 | #define ALIGN_DOWN(x, a) __ALIGN_KERNEL((x) - ((a) - 1), (a))
| ^~~~~~~~~~~~~~
mm/page_isolation.c:329:26: note: in expansion of macro 'ALIGN_DOWN'
329 | start_pfn = max(ALIGN_DOWN(isolate_pageblock, MAX_ORDER_NR_PAGES),
| ^~~~~~~~~~
mm/page_isolation.c:329:56: note: in expansion of macro 'MAX_ORDER_NR_PAGES'
329 | start_pfn = max(ALIGN_DOWN(isolate_pageblock, MAX_ORDER_NR_PAGES),
| ^~~~~~~~~~~~~~~~~~
>> include/linux/mmzone.h:33:31: warning: left shift count is negative [-Wshift-count-negative]
33 | #define MAX_ORDER_NR_PAGES (1 << MAX_ORDER)
| ^~
include/linux/minmax.h:31:39: note: in definition of macro '__cmp_once'
31 | typeof(x) unique_x = (x); \
| ^
include/linux/minmax.h:74:25: note: in expansion of macro '__careful_cmp'
74 | #define max(x, y) __careful_cmp(x, y, >)
| ^~~~~~~~~~~~~
mm/page_isolation.c:329:22: note: in expansion of macro 'max'
329 | start_pfn = max(ALIGN_DOWN(isolate_pageblock, MAX_ORDER_NR_PAGES),
| ^~~
include/uapi/linux/const.h:31:41: note: in expansion of macro '__ALIGN_KERNEL_MASK'
31 | #define __ALIGN_KERNEL(x, a) __ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1)
| ^~~~~~~~~~~~~~~~~~~
include/linux/align.h:9:33: note: in expansion of macro '__ALIGN_KERNEL'
9 | #define ALIGN_DOWN(x, a) __ALIGN_KERNEL((x) - ((a) - 1), (a))
| ^~~~~~~~~~~~~~
mm/page_isolation.c:329:26: note: in expansion of macro 'ALIGN_DOWN'
329 | start_pfn = max(ALIGN_DOWN(isolate_pageblock, MAX_ORDER_NR_PAGES),
| ^~~~~~~~~~
mm/page_isolation.c:329:56: note: in expansion of macro 'MAX_ORDER_NR_PAGES'
329 | start_pfn = max(ALIGN_DOWN(isolate_pageblock, MAX_ORDER_NR_PAGES),
| ^~~~~~~~~~~~~~~~~~
>> include/linux/mmzone.h:33:31: warning: left shift count is negative [-Wshift-count-negative]
33 | #define MAX_ORDER_NR_PAGES (1 << MAX_ORDER)
| ^~
include/linux/minmax.h:31:39: note: in definition of macro '__cmp_once'
31 | typeof(x) unique_x = (x); \
| ^
include/linux/minmax.h:74:25: note: in expansion of macro '__careful_cmp'
74 | #define max(x, y) __careful_cmp(x, y, >)
| ^~~~~~~~~~~~~
mm/page_isolation.c:329:22: note: in expansion of macro 'max'
329 | start_pfn = max(ALIGN_DOWN(isolate_pageblock, MAX_ORDER_NR_PAGES),
| ^~~
include/uapi/linux/const.h:31:41: note: in expansion of macro '__ALIGN_KERNEL_MASK'
31 | #define __ALIGN_KERNEL(x, a) __ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1)
| ^~~~~~~~~~~~~~~~~~~
include/linux/align.h:9:33: note: in expansion of macro '__ALIGN_KERNEL'
9 | #define ALIGN_DOWN(x, a) __ALIGN_KERNEL((x) - ((a) - 1), (a))
| ^~~~~~~~~~~~~~
mm/page_isolation.c:329:26: note: in expansion of macro 'ALIGN_DOWN'
329 | start_pfn = max(ALIGN_DOWN(isolate_pageblock, MAX_ORDER_NR_PAGES),
| ^~~~~~~~~~
mm/page_isolation.c:329:56: note: in expansion of macro 'MAX_ORDER_NR_PAGES'
329 | start_pfn = max(ALIGN_DOWN(isolate_pageblock, MAX_ORDER_NR_PAGES),
| ^~~~~~~~~~~~~~~~~~
..

vim +16 include/linux/build_bug.h

bc6245e5efd70c Ian Abbott 2017-07-10 6
bc6245e5efd70c Ian Abbott 2017-07-10 7 #ifdef __CHECKER__
bc6245e5efd70c Ian Abbott 2017-07-10 8 #define BUILD_BUG_ON_ZERO(e) (0)
bc6245e5efd70c Ian Abbott 2017-07-10 9 #else /* __CHECKER__ */
bc6245e5efd70c Ian Abbott 2017-07-10 10 /*
bc6245e5efd70c Ian Abbott 2017-07-10 11 * Force a compilation error if condition is true, but also produce a
8788994376d84d Rikard Falkeborn 2019-12-04 12 * result (of value 0 and type int), so the expression can be used
bc6245e5efd70c Ian Abbott 2017-07-10 13 * e.g. in a structure initializer (or where-ever else comma expressions
bc6245e5efd70c Ian Abbott 2017-07-10 14 * aren't permitted).
bc6245e5efd70c Ian Abbott 2017-07-10 15 */
8788994376d84d Rikard Falkeborn 2019-12-04 @16 #define BUILD_BUG_ON_ZERO(e) ((int)(sizeof(struct { int:(-!!(e)); })))
527edbc18a70e7 Masahiro Yamada 2019-01-03 17 #endif /* __CHECKER__ */
527edbc18a70e7 Masahiro Yamada 2019-01-03 18

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