* mm/huge_memory.c:84:13: warning: variable 'anon_orders_configured' set but not used
@ 2026-03-30 3:14 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2026-03-30 3:14 UTC (permalink / raw)
To: Arnd Bergmann
Cc: llvm, oe-kbuild-all, linux-kernel, Andrew Morton,
Linux Memory Management List
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 7aaa8047eafd0bd628065b15757d9b48c5f9c07d
commit: 4496e1c1354bd4837bcc1414f6e1a4d042857903 crash_dump, nvme: select CONFIGFS_FS as built-in
date: 10 months ago
config: loongarch-randconfig-002-20260330 (https://download.01.org/0day-ci/archive/20260330/202603301149.yXng4wfz-lkp@intel.com/config)
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 2cd67b8b69f78e3f95918204320c3075a74ba16c)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260330/202603301149.yXng4wfz-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202603301149.yXng4wfz-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from mm/huge_memory.c:44:
arch/loongarch/include/asm/tlb.h:142:24: warning: default initialization of an object of type 'struct vm_area_struct' with const member leaves the object uninitialized [-Wdefault-const-init-field-unsafe]
142 | struct vm_area_struct vma;
| ^
include/linux/mm_types.h:803:20: note: member 'vm_flags' declared 'const' here
803 | const vm_flags_t vm_flags;
| ^
>> mm/huge_memory.c:84:13: warning: variable 'anon_orders_configured' set but not used [-Wunused-but-set-global]
84 | static bool anon_orders_configured __initdata;
| ^
2 warnings generated.
--
>> mm/ksm.c:255:22: warning: variable 'ksm_pages_scanned' set but not used [-Wunused-but-set-global]
255 | static unsigned long ksm_pages_scanned;
| ^
>> mm/ksm.c:258:22: warning: variable 'ksm_pages_shared' set but not used [-Wunused-but-set-global]
258 | static unsigned long ksm_pages_shared;
| ^
>> mm/ksm.c:261:22: warning: variable 'ksm_pages_sharing' set but not used [-Wunused-but-set-global]
261 | static unsigned long ksm_pages_sharing;
| ^
>> mm/ksm.c:264:22: warning: variable 'ksm_pages_unshared' set but not used [-Wunused-but-set-global]
264 | static unsigned long ksm_pages_unshared;
| ^
>> mm/ksm.c:270:22: warning: variable 'ksm_stable_node_chains' set but not used [-Wunused-but-set-global]
270 | static unsigned long ksm_stable_node_chains;
| ^
>> mm/ksm.c:273:22: warning: variable 'ksm_stable_node_dups' set but not used [-Wunused-but-set-global]
273 | static unsigned long ksm_stable_node_dups;
| ^
>> mm/ksm.c:301:22: warning: variable 'ksm_pages_skipped' set but not used [-Wunused-but-set-global]
301 | static unsigned long ksm_pages_skipped;
| ^
7 warnings generated.
--
In file included from mm/khugepaged.c:25:
arch/loongarch/include/asm/tlb.h:142:24: warning: default initialization of an object of type 'struct vm_area_struct' with const member leaves the object uninitialized [-Wdefault-const-init-field-unsafe]
142 | struct vm_area_struct vma;
| ^
include/linux/mm_types.h:803:20: note: member 'vm_flags' declared 'const' here
803 | const vm_flags_t vm_flags;
| ^
>> mm/khugepaged.c:73:21: warning: variable 'khugepaged_pages_collapsed' set but not used [-Wunused-but-set-global]
73 | static unsigned int khugepaged_pages_collapsed;
| ^
>> mm/khugepaged.c:74:21: warning: variable 'khugepaged_full_scans' set but not used [-Wunused-but-set-global]
74 | static unsigned int khugepaged_full_scans;
| ^
3 warnings generated.
--
>> drivers/of/fdt.c:463:12: warning: variable 'of_fdt_crc32' set but not used [-Wunused-but-set-global]
463 | static u32 of_fdt_crc32;
| ^
1 warning generated.
vim +/anon_orders_configured +84 mm/huge_memory.c
97ae17497e996f Kirill A. Shutemov 2012-12-12 43
71e3aac0724ffe Andrea Arcangeli 2011-01-13 @44 #include <asm/tlb.h>
71e3aac0724ffe Andrea Arcangeli 2011-01-13 45 #include <asm/pgalloc.h>
71e3aac0724ffe Andrea Arcangeli 2011-01-13 46 #include "internal.h"
014bb1de4fc17d NeilBrown 2022-05-09 47 #include "swap.h"
71e3aac0724ffe Andrea Arcangeli 2011-01-13 48
283fd6fe0528ae Anshuman Khandual 2022-03-24 49 #define CREATE_TRACE_POINTS
283fd6fe0528ae Anshuman Khandual 2022-03-24 50 #include <trace/events/thp.h>
283fd6fe0528ae Anshuman Khandual 2022-03-24 51
ba76149f47d8c9 Andrea Arcangeli 2011-01-13 52 /*
b14d595aa29923 Michael DeGuzis 2017-05-17 53 * By default, transparent hugepage support is disabled in order to avoid
b14d595aa29923 Michael DeGuzis 2017-05-17 54 * risking an increased memory footprint for applications that are not
b14d595aa29923 Michael DeGuzis 2017-05-17 55 * guaranteed to benefit from it. When transparent hugepage support is
b14d595aa29923 Michael DeGuzis 2017-05-17 56 * enabled, it is for all mappings, and khugepaged scans all mappings.
8bfa3f9a012c40 Jianguo Wu 2013-11-12 57 * Defrag is invoked by khugepaged hugepage allocations and by page faults
8bfa3f9a012c40 Jianguo Wu 2013-11-12 58 * for all hugepage allocations.
ba76149f47d8c9 Andrea Arcangeli 2011-01-13 59 */
71e3aac0724ffe Andrea Arcangeli 2011-01-13 60 unsigned long transparent_hugepage_flags __read_mostly =
13ece886d99cd6 Andrea Arcangeli 2011-01-13 61 #ifdef CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS
ba76149f47d8c9 Andrea Arcangeli 2011-01-13 62 (1<<TRANSPARENT_HUGEPAGE_FLAG)|
13ece886d99cd6 Andrea Arcangeli 2011-01-13 63 #endif
13ece886d99cd6 Andrea Arcangeli 2011-01-13 64 #ifdef CONFIG_TRANSPARENT_HUGEPAGE_MADVISE
13ece886d99cd6 Andrea Arcangeli 2011-01-13 65 (1<<TRANSPARENT_HUGEPAGE_REQ_MADV_FLAG)|
13ece886d99cd6 Andrea Arcangeli 2011-01-13 66 #endif
444eb2a449ef36 Mel Gorman 2016-03-17 67 (1<<TRANSPARENT_HUGEPAGE_DEFRAG_REQ_MADV_FLAG)|
79da5407eeadc7 Kirill A. Shutemov 2012-12-12 68 (1<<TRANSPARENT_HUGEPAGE_DEFRAG_KHUGEPAGED_FLAG)|
79da5407eeadc7 Kirill A. Shutemov 2012-12-12 69 (1<<TRANSPARENT_HUGEPAGE_USE_ZERO_PAGE_FLAG);
ba76149f47d8c9 Andrea Arcangeli 2011-01-13 70
54d917295b8366 Qi Zheng 2023-09-11 71 static struct shrinker *deferred_split_shrinker;
54d917295b8366 Qi Zheng 2023-09-11 72 static unsigned long deferred_split_count(struct shrinker *shrink,
54d917295b8366 Qi Zheng 2023-09-11 73 struct shrink_control *sc);
54d917295b8366 Qi Zheng 2023-09-11 74 static unsigned long deferred_split_scan(struct shrinker *shrink,
54d917295b8366 Qi Zheng 2023-09-11 75 struct shrink_control *sc);
81d3ff3c6f7630 Usama Arif 2024-08-30 76 static bool split_underused_thp = true;
f000565adb770b Andrea Arcangeli 2011-01-13 77
97ae17497e996f Kirill A. Shutemov 2012-12-12 78 static atomic_t huge_zero_refcount;
5691753d73a233 Matthew Wilcox (Oracle 2024-03-26 79) struct folio *huge_zero_folio __read_mostly;
3b77e8c8cde581 Hugh Dickins 2021-06-15 80 unsigned long huge_zero_pfn __read_mostly = ~0UL;
3485b88390b0af Ryan Roberts 2023-12-07 81 unsigned long huge_anon_orders_always __read_mostly;
3485b88390b0af Ryan Roberts 2023-12-07 82 unsigned long huge_anon_orders_madvise __read_mostly;
3485b88390b0af Ryan Roberts 2023-12-07 83 unsigned long huge_anon_orders_inherit __read_mostly;
dd4d30d1cdbe82 Ryan Roberts 2024-08-14 @84 static bool anon_orders_configured __initdata;
3485b88390b0af Ryan Roberts 2023-12-07 85
:::::: The code at line 84 was first introduced by commit
:::::: dd4d30d1cdbe826e6569b44453c2d9bb9424d234 mm: override mTHP "enabled" defaults at kernel cmdline
:::::: TO: Ryan Roberts <ryan.roberts@arm.com>
:::::: CC: Andrew Morton <akpm@linux-foundation.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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