Re: [PATCH] mm: make allocation counters per-order

From: kbuild test robot
Date: Thu Jul 06 2017 - 21:55:49 EST

Hi Roman,

[auto build test ERROR on mmotm/master]
[also build test ERROR on next-20170706]
[cannot apply to v4.12]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url: https://github.com/0day-ci/linux/commits/Roman-Gushchin/mm-make-allocation-counters-per-order/20170707-091630
base: git://git.cmpxchg.org/linux-mmotm.git master
config: x86_64-randconfig-x019-201727 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64

All errors (new ones prefixed by >>):

mm/vmstat.c: In function 'allocinfo_show':
>> mm/vmstat.c:1513:2: error: implicit declaration of function 'sum_vm_events' [-Werror=implicit-function-declaration]
sum_vm_events(allocs, PGALLOC_FIRST_ZONE, PGALLOC_EVENTS_SIZE);
^~~~~~~~~~~~~
At top level:
mm/vmstat.c:1491:13: warning: 'sum_alloc_events' defined but not used [-Wunused-function]
static void sum_alloc_events(unsigned long *v)
^~~~~~~~~~~~~~~~
Cyclomatic Complexity 5 include/linux/compiler.h:__read_once_size
Cyclomatic Complexity 1 arch/x86/include/asm/bitops.h:fls64
Cyclomatic Complexity 1 include/linux/log2.h:__ilog2_u64
Cyclomatic Complexity 1 include/asm-generic/getorder.h:__get_order
Cyclomatic Complexity 2 arch/x86/include/asm/jump_label.h:arch_static_branch
Cyclomatic Complexity 1 arch/x86/include/asm/atomic64_64.h:atomic64_read
Cyclomatic Complexity 1 include/asm-generic/atomic-long.h:atomic_long_read
Cyclomatic Complexity 1 include/linux/math64.h:div_u64_rem
Cyclomatic Complexity 1 include/linux/math64.h:div_u64
Cyclomatic Complexity 1 include/linux/err.h:ERR_PTR
Cyclomatic Complexity 1 include/linux/spinlock.h:spinlock_check
Cyclomatic Complexity 1 include/linux/spinlock.h:spin_unlock_irqrestore
Cyclomatic Complexity 1 include/linux/nodemask.h:node_state
Cyclomatic Complexity 1 include/linux/mmzone.h:zone_end_pfn
Cyclomatic Complexity 1 include/linux/mmzone.h:populated_zone
Cyclomatic Complexity 2 include/linux/mmzone.h:__nr_to_section
Cyclomatic Complexity 1 include/linux/mmzone.h:__section_mem_map_addr
Cyclomatic Complexity 3 include/linux/mmzone.h:valid_section
Cyclomatic Complexity 1 include/linux/mmzone.h:__pfn_to_section
Cyclomatic Complexity 2 include/linux/mmzone.h:pfn_valid
Cyclomatic Complexity 1 include/linux/mmzone.h:memmap_valid_within
Cyclomatic Complexity 1 include/linux/mm.h:page_zonenum
Cyclomatic Complexity 1 include/linux/mm.h:page_zone
Cyclomatic Complexity 1 include/linux/mm.h:page_to_section
Cyclomatic Complexity 1 include/linux/vmstat.h:global_page_state
Cyclomatic Complexity 1 include/linux/vmstat.h:global_node_page_state
Cyclomatic Complexity 1 include/linux/vmstat.h:zone_page_state
Cyclomatic Complexity 28 include/linux/slab.h:kmalloc_index
Cyclomatic Complexity 68 include/linux/slab.h:kmalloc_large
Cyclomatic Complexity 5 include/linux/slab.h:kmalloc
Cyclomatic Complexity 1 include/linux/cpu.h:cpus_read_lock
Cyclomatic Complexity 1 include/linux/cpu.h:cpus_read_unlock
Cyclomatic Complexity 1 include/linux/cpu.h:get_online_cpus
Cyclomatic Complexity 1 include/linux/cpu.h:put_online_cpus
Cyclomatic Complexity 1 include/linux/proc_fs.h:proc_create
Cyclomatic Complexity 3 mm/vmstat.c:fill_contig_page_info
Cyclomatic Complexity 3 mm/vmstat.c:__fragmentation_index
Cyclomatic Complexity 1 mm/vmstat.c:frag_stop
Cyclomatic Complexity 6 mm/vmstat.c:walk_zones_in_node
Cyclomatic Complexity 1 mm/vmstat.c:frag_show
Cyclomatic Complexity 3 mm/vmstat.c:is_zone_first_populated
Cyclomatic Complexity 1 mm/vmstat.c:zoneinfo_show
Cyclomatic Complexity 2 mm/vmstat.c:allocinfo_start
Cyclomatic Complexity 1 mm/vmstat.c:allocinfo_next
Cyclomatic Complexity 1 mm/vmstat.c:allocinfo_stop
Cyclomatic Complexity 3 mm/vmstat.c:vmstat_next
Cyclomatic Complexity 2 mm/vmstat.c:unusable_free_index
Cyclomatic Complexity 2 mm/vmstat.c:unusable_show
Cyclomatic Complexity 1 mm/vmstat.c:extfrag_show
Cyclomatic Complexity 1 mm/vmstat.c:zoneinfo_open
Cyclomatic Complexity 1 mm/vmstat.c:vmstat_open
Cyclomatic Complexity 1 mm/vmstat.c:pagetypeinfo_open
Cyclomatic Complexity 1 mm/vmstat.c:allocinfo_open
Cyclomatic Complexity 1 mm/vmstat.c:fragmentation_open
Cyclomatic Complexity 1 mm/vmstat.c:extfrag_open
Cyclomatic Complexity 1 mm/vmstat.c:unusable_open
Cyclomatic Complexity 7 mm/vmstat.c:zoneinfo_show_print
Cyclomatic Complexity 2 mm/vmstat.c:pagetypeinfo_showfree
Cyclomatic Complexity 4 mm/vmstat.c:pagetypeinfo_showfree_print
Cyclomatic Complexity 2 mm/vmstat.c:pagetypeinfo_showblockcount
Cyclomatic Complexity 2 mm/vmstat.c:frag_show_print
Cyclomatic Complexity 2 mm/vmstat.c:extfrag_show_print
Cyclomatic Complexity 2 mm/vmstat.c:unusable_show_print
Cyclomatic Complexity 1 mm/vmstat.c:frag_next
Cyclomatic Complexity 2 mm/vmstat.c:frag_start
Cyclomatic Complexity 4 mm/vmstat.c:vmstat_show
Cyclomatic Complexity 1 mm/vmstat.c:vmstat_stop
Cyclomatic Complexity 5 mm/vmstat.c:vmstat_start
Cyclomatic Complexity 8 mm/vmstat.c:pagetypeinfo_showblockcount_print
Cyclomatic Complexity 3 mm/vmstat.c:pagetypeinfo_showmixedcount
Cyclomatic Complexity 2 mm/vmstat.c:pagetypeinfo_show
Cyclomatic Complexity 4 mm/vmstat.c:allocinfo_show
Cyclomatic Complexity 4 mm/vmstat.c:extfrag_debug_init
Cyclomatic Complexity 1 mm/vmstat.c:fragmentation_index
Cyclomatic Complexity 1 mm/vmstat.c:init_mm_internals
cc1: some warnings being treated as errors

vim +/sum_vm_events +1513 mm/vmstat.c

1507 int zid;
1508
1509 if (arg != SEQ_START_TOKEN)
1510 return 0;
1511
1512 get_online_cpus();
> 1513 sum_vm_events(allocs, PGALLOC_FIRST_ZONE, PGALLOC_EVENTS_SIZE);
1514 put_online_cpus();
1515
1516 for (zid = 0; zid < MAX_NR_ZONES; ++zid) {

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