[dm-devel] [dm:block-dm-4.21-inflight 6/9] drivers//md/dm.c:655:19:

[kbuild test robot]

tree: https://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git block-dm-4.21-inflight
head: 43ffa903230b8656a88fdc38882153a765076972
commit: 335b41c7513110b1519d8a93d412c138bf671263 [6/9] dm: remove the pending IO accounting
config: i386-randconfig-x001-201847 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
git checkout 335b41c7513110b1519d8a93d412c138bf671263
# save the attached .config to linux build tree
make ARCH=i386

All warnings (new ones prefixed by >>):

In file included from include/linux/genhd.h:20:0,
from include/linux/blkdev.h:11,
from include/linux/blk-mq.h:5,
from drivers//md/dm-core.h:14,
from drivers//md/dm.c:8:
drivers//md/dm.c: In function 'md_in_flight':
include/linux/percpu-defs.h:219:52: error: invalid operands to binary + (have 'struct disk_stats' and 'int')
const void __percpu *__vpp_verify = (typeof((ptr) + 0))NULL; \
~~~~~ ^
arch/x86/include/asm/local.h:16:42: note: in definition of macro 'local_read'
#define local_read(l) atomic_long_read(&(l)->a)
^
include/linux/percpu-defs.h:259:2: note: in expansion of macro '__verify_pcpu_ptr'
__verify_pcpu_ptr(__p); \
^~~~~~~~~~~~~~~~~
include/linux/percpu-defs.h:263:47: note: in expansion of macro 'VERIFY_PERCPU_PTR'
#define per_cpu_ptr(ptr, cpu) ({ (void)(cpu); VERIFY_PERCPU_PTR(ptr); })
^~~~~~~~~~~~~~~~~

drivers//md/dm.c:655:19: note: in expansion of macro 'per_cpu_ptr'

if (local_read(&per_cpu_ptr(part->dkstats, cpu)->in_flight[0]) ||
^~~~~~~~~~~
include/linux/percpu-defs.h:260:10: error: invalid type argument of unary '*' (have 'struct disk_stats')
(typeof(*(__p)) __kernel __force *)(__p); \
^~~~~~
arch/x86/include/asm/local.h:16:42: note: in definition of macro 'local_read'
#define local_read(l) atomic_long_read(&(l)->a)
^
include/linux/percpu-defs.h:263:47: note: in expansion of macro 'VERIFY_PERCPU_PTR'
#define per_cpu_ptr(ptr, cpu) ({ (void)(cpu); VERIFY_PERCPU_PTR(ptr); })
^~~~~~~~~~~~~~~~~

drivers//md/dm.c:655:19: note: in expansion of macro 'per_cpu_ptr'

if (local_read(&per_cpu_ptr(part->dkstats, cpu)->in_flight[0]) ||
^~~~~~~~~~~
include/linux/percpu-defs.h:219:52: error: invalid operands to binary + (have 'struct disk_stats' and 'int')
const void __percpu *__vpp_verify = (typeof((ptr) + 0))NULL; \
~~~~~ ^
arch/x86/include/asm/local.h:16:42: note: in definition of macro 'local_read'
#define local_read(l) atomic_long_read(&(l)->a)
^
include/linux/percpu-defs.h:259:2: note: in expansion of macro '__verify_pcpu_ptr'
__verify_pcpu_ptr(__p); \
^~~~~~~~~~~~~~~~~
include/linux/percpu-defs.h:263:47: note: in expansion of macro 'VERIFY_PERCPU_PTR'
#define per_cpu_ptr(ptr, cpu) ({ (void)(cpu); VERIFY_PERCPU_PTR(ptr); })
^~~~~~~~~~~~~~~~~
drivers//md/dm.c:656:19: note: in expansion of macro 'per_cpu_ptr'
local_read(&per_cpu_ptr(part->dkstats, cpu)->in_flight[1]))
^~~~~~~~~~~
include/linux/percpu-defs.h:260:10: error: invalid type argument of unary '*' (have 'struct disk_stats')
(typeof(*(__p)) __kernel __force *)(__p); \
^~~~~~
arch/x86/include/asm/local.h:16:42: note: in definition of macro 'local_read'
#define local_read(l) atomic_long_read(&(l)->a)
^
include/linux/percpu-defs.h:263:47: note: in expansion of macro 'VERIFY_PERCPU_PTR'
#define per_cpu_ptr(ptr, cpu) ({ (void)(cpu); VERIFY_PERCPU_PTR(ptr); })
^~~~~~~~~~~~~~~~~
drivers//md/dm.c:656:19: note: in expansion of macro 'per_cpu_ptr'
local_read(&per_cpu_ptr(part->dkstats, cpu)->in_flight[1]))
^~~~~~~~~~~

vim +/per_cpu_ptr +655 drivers//md/dm.c

648
649 static bool md_in_flight(struct mapped_device *md)
650 {
651 int cpu;
652 struct hd_struct *part = &dm_disk(md)->part0;
653
654 for_each_possible_cpu(cpu) {

655 if (local_read(&per_cpu_ptr(part->dkstats, cpu)->in_flight[0]) ||

656 local_read(&per_cpu_ptr(part->dkstats, cpu)->in_flight[1]))
657 return true;
658 }
659
660 return false;
661 }
662

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