Re: [PATCH bpf-next v2 22/26] bpf: Introduce rqspinlock kfuncs

[kernel test robot <lkp@intel.com>]

Hi Kumar,

kernel test robot noticed the following build errors:

[auto build test ERROR on 0abff462d802a352c87b7f5e71b442b09bf9cfff]

url:    https://github.com/intel-lab-lkp/linux/commits/Kumar-Kartikeya-Dwivedi/locking-Move-MCS-struct-definition-to-public-header/20250206-190258
base:   0abff462d802a352c87b7f5e71b442b09bf9cfff
patch link:    https://lore.kernel.org/r/20250206105435.2159977-23-memxor%40gmail.com
patch subject: [PATCH bpf-next v2 22/26] bpf: Introduce rqspinlock kfuncs
config: x86_64-buildonly-randconfig-004-20250207 (https://download.01.org/0day-ci/archive/20250207/202502072155.DbOeX8Le-lkp@intel.com/config)
compiler: clang version 19.1.3 (https://github.com/llvm/llvm-project ab51eccf88f5321e7c60591c5546b254b6afab99)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250207/202502072155.DbOeX8Le-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/202502072155.DbOeX8Le-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from fs/timerfd.c:26:
   In file included from include/linux/syscalls.h:94:
   In file included from include/trace/syscall.h:7:
   In file included from include/linux/trace_events.h:10:
   In file included from include/linux/perf_event.h:62:
   In file included from include/linux/security.h:35:
   In file included from include/linux/bpf.h:33:
   In file included from arch/x86/include/asm/rqspinlock.h:27:
>> include/asm-generic/rqspinlock.h:40:12: error: conflicting types for 'resilient_tas_spin_lock'
      40 | extern int resilient_tas_spin_lock(rqspinlock_t *lock, u64 timeout);
         |            ^
   arch/x86/include/asm/rqspinlock.h:17:12: note: previous declaration is here
      17 | extern int resilient_tas_spin_lock(struct qspinlock *lock, u64 timeout);
         |            ^
   1 error generated.
--
   In file included from fs/splice.c:27:
   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);
         |                                 ~~~~~~~~~~~~~~~~ ^ ~~~
   In file included from fs/splice.c:31:
   In file included from include/linux/syscalls.h:94:
   In file included from include/trace/syscall.h:7:
   In file included from include/linux/trace_events.h:10:
   In file included from include/linux/perf_event.h:62:
   In file included from include/linux/security.h:35:
   In file included from include/linux/bpf.h:33:
   In file included from arch/x86/include/asm/rqspinlock.h:27:
>> include/asm-generic/rqspinlock.h:40:12: error: conflicting types for 'resilient_tas_spin_lock'
      40 | extern int resilient_tas_spin_lock(rqspinlock_t *lock, u64 timeout);
         |            ^
   arch/x86/include/asm/rqspinlock.h:17:12: note: previous declaration is here
      17 | extern int resilient_tas_spin_lock(struct qspinlock *lock, u64 timeout);
         |            ^
   2 warnings and 1 error generated.
--
   In file included from fs/aio.c:20:
   In file included from include/linux/syscalls.h:94:
   In file included from include/trace/syscall.h:7:
   In file included from include/linux/trace_events.h:10:
   In file included from include/linux/perf_event.h:62:
   In file included from include/linux/security.h:35:
   In file included from include/linux/bpf.h:33:
   In file included from arch/x86/include/asm/rqspinlock.h:27:
>> include/asm-generic/rqspinlock.h:40:12: error: conflicting types for 'resilient_tas_spin_lock'
      40 | extern int resilient_tas_spin_lock(rqspinlock_t *lock, u64 timeout);
         |            ^
   arch/x86/include/asm/rqspinlock.h:17:12: note: previous declaration is here
      17 | extern int resilient_tas_spin_lock(struct qspinlock *lock, u64 timeout);
         |            ^
   In file included from fs/aio.c:29:
   include/linux/mman.h:159:9: warning: division by zero is undefined [-Wdivision-by-zero]
     159 |                _calc_vm_trans(flags, MAP_SYNC,       VM_SYNC      ) |
         |                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/mman.h:137:21: note: expanded from macro '_calc_vm_trans'
     137 |    : ((x) & (bit1)) / ((bit1) / (bit2))))
         |                     ^ ~~~~~~~~~~~~~~~~~
   include/linux/mman.h:160:9: warning: division by zero is undefined [-Wdivision-by-zero]
     160 |                _calc_vm_trans(flags, MAP_STACK,      VM_NOHUGEPAGE) |
         |                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/mman.h:137:21: note: expanded from macro '_calc_vm_trans'
     137 |    : ((x) & (bit1)) / ((bit1) / (bit2))))
         |                     ^ ~~~~~~~~~~~~~~~~~
   2 warnings and 1 error generated.


vim +/resilient_tas_spin_lock +40 include/asm-generic/rqspinlock.h

c34e46edef2a89 Kumar Kartikeya Dwivedi 2025-02-06  39  
7a9d3b27f7bf9c Kumar Kartikeya Dwivedi 2025-02-06 @40  extern int resilient_tas_spin_lock(rqspinlock_t *lock, u64 timeout);
7a9d3b27f7bf9c Kumar Kartikeya Dwivedi 2025-02-06  41  #ifdef CONFIG_QUEUED_SPINLOCKS
6516ce00a1482f Kumar Kartikeya Dwivedi 2025-02-06  42  extern int resilient_queued_spin_lock_slowpath(rqspinlock_t *lock, u32 val, u64 timeout);
7a9d3b27f7bf9c Kumar Kartikeya Dwivedi 2025-02-06  43  #endif
6516ce00a1482f Kumar Kartikeya Dwivedi 2025-02-06  44  

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