Re: [PATCH v9 7/8] mm: add folio_put_mgen() to deliver migrc's generation number to pcp or buddy

From: kernel test robot
Date: Wed Apr 17 2024 - 15:49:54 EST

Hi Byungchul,

kernel test robot noticed the following build errors:

[auto build test ERROR on 0bbac3facb5d6cc0171c45c9873a2dc96bea9680]

url: https://github.com/intel-lab-lkp/linux/commits/Byungchul-Park/x86-tlb-add-APIs-manipulating-tlb-batch-s-arch-data/20240417-152211
base: 0bbac3facb5d6cc0171c45c9873a2dc96bea9680
patch link: https://lore.kernel.org/r/20240417071847.29584-8-byungchul%40sk.com
patch subject: [PATCH v9 7/8] mm: add folio_put_mgen() to deliver migrc's generation number to pcp or buddy
config: riscv-defconfig (https://download.01.org/0day-ci/archive/20240418/202404180327.oqZWEtEn-lkp@xxxxxxxxx/config)
compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project 7089c359a3845323f6f30c44a47dd901f2edfe63)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240418/202404180327.oqZWEtEn-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202404180327.oqZWEtEn-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

In file included from mm/page_alloc.c:19:
In file included from include/linux/mm.h:2230:
include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
In file included from mm/page_alloc.c:44:
include/linux/mm_inline.h:47:41: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
47 | __mod_lruvec_state(lruvec, NR_LRU_BASE + lru, nr_pages);
| ~~~~~~~~~~~ ^ ~~~
include/linux/mm_inline.h:49:22: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
49 | NR_ZONE_LRU_BASE + lru, nr_pages);
| ~~~~~~~~~~~~~~~~ ^ ~~~
mm/page_alloc.c:2812:2: warning: arithmetic between different enumeration types ('enum vm_event_item' and 'enum zone_type') [-Wenum-enum-conversion]
2812 | __count_zid_vm_events(PGALLOC, page_zonenum(page), 1 << order);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:135:34: note: expanded from macro '__count_zid_vm_events'
135 | __count_vm_events(item##_NORMAL - ZONE_NORMAL + zid, delta)
| ~~~~~~~~~~~~~ ^ ~~~~~~~~~~~
mm/page_alloc.c:2934:3: warning: arithmetic between different enumeration types ('enum vm_event_item' and 'enum zone_type') [-Wenum-enum-conversion]
2934 | __count_zid_vm_events(PGALLOC, page_zonenum(page), 1 << order);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:135:34: note: expanded from macro '__count_zid_vm_events'
135 | __count_vm_events(item##_NORMAL - ZONE_NORMAL + zid, delta)
| ~~~~~~~~~~~~~ ^ ~~~~~~~~~~~
mm/page_alloc.c:4575:2: warning: arithmetic between different enumeration types ('enum vm_event_item' and 'enum zone_type') [-Wenum-enum-conversion]
4575 | __count_zid_vm_events(PGALLOC, zone_idx(zone), nr_account);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:135:34: note: expanded from macro '__count_zid_vm_events'
135 | __count_vm_events(item##_NORMAL - ZONE_NORMAL + zid, delta)
| ~~~~~~~~~~~~~ ^ ~~~~~~~~~~~
In file included from mm/page_alloc.c:58:
>> mm/internal.h:1404:9: error: call to '__compiletime_assert_368' declared with 'error' attribute: BUILD_BUG failed
1404 | return xchg(&current->mgen, 0);
| ^
include/linux/atomic/atomic-instrumented.h:4758:2: note: expanded from macro 'xchg'
4758 | raw_xchg(__ai_ptr, __VA_ARGS__); \
| ^
include/linux/atomic/atomic-arch-fallback.h:12:18: note: expanded from macro 'raw_xchg'
12 | #define raw_xchg arch_xchg
| ^
arch/riscv/include/asm/cmpxchg.h:145:23: note: expanded from macro 'arch_xchg'
145 | (__typeof__(*(ptr))) __arch_xchg((ptr), _x_, sizeof(*(ptr))); \
| ^
note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/compiler_types.h:437:2: note: expanded from macro '_compiletime_assert'
437 | __compiletime_assert(condition, msg, prefix, suffix)
| ^
include/linux/compiler_types.h:430:4: note: expanded from macro '__compiletime_assert'
430 | prefix ## suffix(); \
| ^
<scratch space>:124:1: note: expanded from here
124 | __compiletime_assert_368
| ^
In file included from mm/page_alloc.c:58:
>> mm/internal.h:1404:9: error: call to '__compiletime_assert_368' declared with 'error' attribute: BUILD_BUG failed
include/linux/atomic/atomic-instrumented.h:4758:2: note: expanded from macro 'xchg'
4758 | raw_xchg(__ai_ptr, __VA_ARGS__); \
| ^
include/linux/atomic/atomic-arch-fallback.h:12:18: note: expanded from macro 'raw_xchg'
12 | #define raw_xchg arch_xchg
| ^
arch/riscv/include/asm/cmpxchg.h:145:23: note: expanded from macro 'arch_xchg'
145 | (__typeof__(*(ptr))) __arch_xchg((ptr), _x_, sizeof(*(ptr))); \
| ^
note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/compiler_types.h:437:2: note: expanded from macro '_compiletime_assert'
437 | __compiletime_assert(condition, msg, prefix, suffix)
| ^
include/linux/compiler_types.h:430:4: note: expanded from macro '__compiletime_assert'
430 | prefix ## suffix(); \
| ^
<scratch space>:124:1: note: expanded from here
124 | __compiletime_assert_368
| ^
6 warnings and 2 errors generated.


vim +1404 mm/internal.h

1401
1402 static inline unsigned int hand_over_task_mgen(void)
1403 {
> 1404 return xchg(&current->mgen, 0);
1405 }
1406

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