[tip:WIP.locking/core 25/29] kernel/locking/rwsem.h:203:34: error: 'struct rw_semaphore' has no member named 'owner'

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git WIP.locking/core
head:   5c587ed687faed2eb0afdd669ddd167d0d940236
commit: 2d6f2f61367455179ee140b3d4af6974d3e5d06d [25/29] locking/rwsem: Enable time-based spinning on reader-owned rwsem
config: riscv-tinyconfig (attached as .config)
compiler: riscv64-linux-gcc (GCC) 8.1.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 2d6f2f61367455179ee140b3d4af6974d3e5d06d
        # save the attached .config to linux build tree
        GCC_VERSION=8.1.0 make.cross ARCH=riscv 

All errors (new ones prefixed by >>):

   In file included from include/linux/kernel.h:11,
                    from kernel/locking/rwsem.c:9:
   kernel/locking/rwsem.h: In function 'rwsem_set_nonspinnable':
>> kernel/locking/rwsem.h:203:34: error: 'struct rw_semaphore' has no member named 'owner'
     long owner = (long)READ_ONCE(sem->owner);
                                     ^~
   include/linux/compiler.h:255:17: note: in definition of macro '__READ_ONCE'
     union { typeof(x) __val; char __c[1]; } __u;   \
                    ^
   kernel/locking/rwsem.h:203:21: note: in expansion of macro 'READ_ONCE'
     long owner = (long)READ_ONCE(sem->owner);
                        ^~~~~~~~~
>> kernel/locking/rwsem.h:203:34: error: 'struct rw_semaphore' has no member named 'owner'
     long owner = (long)READ_ONCE(sem->owner);
                                     ^~
   include/linux/compiler.h:257:22: note: in definition of macro '__READ_ONCE'
      __read_once_size(&(x), __u.__c, sizeof(x));  \
                         ^
   kernel/locking/rwsem.h:203:21: note: in expansion of macro 'READ_ONCE'
     long owner = (long)READ_ONCE(sem->owner);
                        ^~~~~~~~~
>> kernel/locking/rwsem.h:203:34: error: 'struct rw_semaphore' has no member named 'owner'
     long owner = (long)READ_ONCE(sem->owner);
                                     ^~
   include/linux/compiler.h:257:42: note: in definition of macro '__READ_ONCE'
      __read_once_size(&(x), __u.__c, sizeof(x));  \
                                             ^
   kernel/locking/rwsem.h:203:21: note: in expansion of macro 'READ_ONCE'
     long owner = (long)READ_ONCE(sem->owner);
                        ^~~~~~~~~
>> kernel/locking/rwsem.h:203:34: error: 'struct rw_semaphore' has no member named 'owner'
     long owner = (long)READ_ONCE(sem->owner);
                                     ^~
   include/linux/compiler.h:259:30: note: in definition of macro '__READ_ONCE'
      __read_once_size_nocheck(&(x), __u.__c, sizeof(x)); \
                                 ^
   kernel/locking/rwsem.h:203:21: note: in expansion of macro 'READ_ONCE'
     long owner = (long)READ_ONCE(sem->owner);
                        ^~~~~~~~~
>> kernel/locking/rwsem.h:203:34: error: 'struct rw_semaphore' has no member named 'owner'
     long owner = (long)READ_ONCE(sem->owner);
                                     ^~
   include/linux/compiler.h:259:50: note: in definition of macro '__READ_ONCE'
      __read_once_size_nocheck(&(x), __u.__c, sizeof(x)); \
                                                     ^
   kernel/locking/rwsem.h:203:21: note: in expansion of macro 'READ_ONCE'
     long owner = (long)READ_ONCE(sem->owner);
                        ^~~~~~~~~
   In file included from kernel/locking/rwsem.c:16:
>> kernel/locking/rwsem.h:205:9: error: implicit declaration of function 'is_rwsem_owner_reader' [-Werror=implicit-function-declaration]
     while (is_rwsem_owner_reader((struct task_struct *)owner)) {
            ^~~~~~~~~~~~~~~~~~~~~
>> kernel/locking/rwsem.h:206:8: error: implicit declaration of function 'is_rwsem_owner_spinnable'; did you mean 'rwsem_set_nonspinnable'? [-Werror=implicit-function-declaration]
      if (!is_rwsem_owner_spinnable((struct task_struct *)owner))
           ^~~~~~~~~~~~~~~~~~~~~~~~
           rwsem_set_nonspinnable
   In file included from arch/riscv/include/asm/atomic.h:23,
                    from include/linux/atomic.h:7,
                    from include/linux/rcupdate.h:25,
                    from include/linux/rculist.h:11,
                    from include/linux/pid.h:5,
                    from include/linux/sched.h:14,
                    from kernel/locking/rwsem.c:10:
   kernel/locking/rwsem.h:208:31: error: 'struct rw_semaphore' has no member named 'owner'
      owner = cmpxchg((long *)&sem->owner, owner,
                                  ^~
   arch/riscv/include/asm/cmpxchg.h:350:15: note: in definition of macro 'cmpxchg'
     __typeof__(*(ptr)) _o_ = (o);     \
                  ^~~
   kernel/locking/rwsem.h:208:31: error: 'struct rw_semaphore' has no member named 'owner'
      owner = cmpxchg((long *)&sem->owner, owner,
                                  ^~
   arch/riscv/include/asm/cmpxchg.h:351:15: note: in definition of macro 'cmpxchg'
     __typeof__(*(ptr)) _n_ = (n);     \
                  ^~~
   kernel/locking/rwsem.h:208:31: error: 'struct rw_semaphore' has no member named 'owner'
      owner = cmpxchg((long *)&sem->owner, owner,
                                  ^~
   arch/riscv/include/asm/cmpxchg.h:352:16: note: in definition of macro 'cmpxchg'
     (__typeof__(*(ptr))) __cmpxchg((ptr),    \
                   ^~~
   kernel/locking/rwsem.h:208:31: error: 'struct rw_semaphore' has no member named 'owner'
      owner = cmpxchg((long *)&sem->owner, owner,
                                  ^~
   arch/riscv/include/asm/cmpxchg.h:312:13: note: in definition of macro '__cmpxchg'
     __typeof__(ptr) __ptr = (ptr);     \
                ^~~
   kernel/locking/rwsem.h:208:11: note: in expansion of macro 'cmpxchg'
      owner = cmpxchg((long *)&sem->owner, owner,
              ^~~~~~~
   kernel/locking/rwsem.h:208:31: error: 'struct rw_semaphore' has no member named 'owner'
      owner = cmpxchg((long *)&sem->owner, owner,
                                  ^~
   arch/riscv/include/asm/cmpxchg.h:312:27: note: in definition of macro '__cmpxchg'
     __typeof__(ptr) __ptr = (ptr);     \
                              ^~~
   kernel/locking/rwsem.h:208:11: note: in expansion of macro 'cmpxchg'
      owner = cmpxchg((long *)&sem->owner, owner,
              ^~~~~~~
   kernel/locking/rwsem.h:208:31: error: 'struct rw_semaphore' has no member named 'owner'
      owner = cmpxchg((long *)&sem->owner, owner,
                                  ^~
   arch/riscv/include/asm/cmpxchg.h:313:15: note: in definition of macro '__cmpxchg'
     __typeof__(*(ptr)) __old = (old);    \
                  ^~~
   kernel/locking/rwsem.h:208:11: note: in expansion of macro 'cmpxchg'
      owner = cmpxchg((long *)&sem->owner, owner,
              ^~~~~~~
   kernel/locking/rwsem.h:208:31: error: 'struct rw_semaphore' has no member named 'owner'
      owner = cmpxchg((long *)&sem->owner, owner,
                                  ^~
   arch/riscv/include/asm/cmpxchg.h:314:15: note: in definition of macro '__cmpxchg'
     __typeof__(*(ptr)) __new = (new);    \
                  ^~~
   kernel/locking/rwsem.h:208:11: note: in expansion of macro 'cmpxchg'
      owner = cmpxchg((long *)&sem->owner, owner,
              ^~~~~~~
   kernel/locking/rwsem.h:208:31: error: 'struct rw_semaphore' has no member named 'owner'
      owner = cmpxchg((long *)&sem->owner, owner,
                                  ^~
   arch/riscv/include/asm/cmpxchg.h:315:15: note: in definition of macro '__cmpxchg'
     __typeof__(*(ptr)) __ret;     \
                  ^~~
   kernel/locking/rwsem.h:208:11: note: in expansion of macro 'cmpxchg'
      owner = cmpxchg((long *)&sem->owner, owner,
              ^~~~~~~
   kernel/locking/rwsem.h:208:31: error: 'struct rw_semaphore' has no member named 'owner'
      owner = cmpxchg((long *)&sem->owner, owner,
                                  ^~
   arch/riscv/include/asm/cmpxchg.h:317:10: note: in definition of macro '__cmpxchg'
     switch (size) {       \
             ^~~~
   kernel/locking/rwsem.h:208:11: note: in expansion of macro 'cmpxchg'
      owner = cmpxchg((long *)&sem->owner, owner,
              ^~~~~~~
   arch/riscv/include/asm/cmpxchg.h:326:41: error: invalid type argument of unary '*' (have 'int')
       : "=&r" (__ret), "=&r" (__rc), "+A" (*__ptr) \
                                            ^~~~~~
   arch/riscv/include/asm/cmpxchg.h:352:23: note: in expansion of macro '__cmpxchg'
     (__typeof__(*(ptr))) __cmpxchg((ptr),    \
                          ^~~~~~~~~
   kernel/locking/rwsem.h:208:11: note: in expansion of macro 'cmpxchg'
      owner = cmpxchg((long *)&sem->owner, owner,
              ^~~~~~~
   arch/riscv/include/asm/cmpxchg.h:338:41: error: invalid type argument of unary '*' (have 'int')
       : "=&r" (__ret), "=&r" (__rc), "+A" (*__ptr) \
                                            ^~~~~~
   arch/riscv/include/asm/cmpxchg.h:352:23: note: in expansion of macro '__cmpxchg'
     (__typeof__(*(ptr))) __cmpxchg((ptr),    \
                          ^~~~~~~~~
   kernel/locking/rwsem.h:208:11: note: in expansion of macro 'cmpxchg'
      owner = cmpxchg((long *)&sem->owner, owner,
              ^~~~~~~

vim +203 kernel/locking/rwsem.h

   196	
   197	/*
   198	 * Set the RWSEM_ANONYMOUSLY_OWNED flag if the RWSEM_READER_OWNED flag
   199	 * remains set. Otherwise, the operation will be aborted.
   200	 */
   201	static inline void rwsem_set_nonspinnable(struct rw_semaphore *sem)
   202	{
 > 203		long owner = (long)READ_ONCE(sem->owner);
   204	
 > 205		while (is_rwsem_owner_reader((struct task_struct *)owner)) {
 > 206			if (!is_rwsem_owner_spinnable((struct task_struct *)owner))
   207				break;
   208			owner = cmpxchg((long *)&sem->owner, owner,
   209					owner | RWSEM_ANONYMOUSLY_OWNED);
   210		}
   211	}
   212	

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