tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 888c8375131656144c1605071eab2eb6ac49abc3 commit: cec08ed70d3d5209368a435fed278ae667117a0c [1860/2084] mm, printk: introduce new format string for flags config: s390-allyesconfig (attached as .config) reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout cec08ed70d3d5209368a435fed278ae667117a0c # save the attached .config to linux build tree make.cross ARCH=s390 All error/warnings (new ones prefixed by >>): In file included from include/linux/spinlock.h:81:0, from include/linux/rcupdate.h:38, from include/linux/tracepoint.h:19, from include/linux/mmdebug.h:7, from arch/s390/include/asm/cmpxchg.h:10, from arch/s390/include/asm/atomic.h:19, from include/linux/atomic.h:4, from include/linux/debug_locks.h:5, from include/linux/lockdep.h:23, from include/linux/hardirq.h:5, from include/linux/kvm_host.h:10, from arch/s390/kernel/asm-offsets.c:10: >> include/linux/spinlock_types.h:30:21: error: field 'dep_map' has incomplete type struct lockdep_map dep_map; ^ include/linux/spinlock_types.h:72:23: error: field 'dep_map' has incomplete type struct lockdep_map dep_map; ^ In file included from include/linux/spinlock_types.h:86:0, from include/linux/spinlock.h:81, from include/linux/rcupdate.h:38, from include/linux/tracepoint.h:19, from include/linux/mmdebug.h:7, from arch/s390/include/asm/cmpxchg.h:10, from arch/s390/include/asm/atomic.h:19, from include/linux/atomic.h:4, from include/linux/debug_locks.h:5, from include/linux/lockdep.h:23, from include/linux/hardirq.h:5, from include/linux/kvm_host.h:10, from arch/s390/kernel/asm-offsets.c:10: >> include/linux/rwlock_types.h:21:21: error: field 'dep_map' has incomplete type struct lockdep_map dep_map; ^ In file included from include/linux/smp.h:14:0, from arch/s390/include/asm/spinlock.h:12, from include/linux/spinlock.h:87, from include/linux/rcupdate.h:38, from include/linux/tracepoint.h:19, from include/linux/mmdebug.h:7, from arch/s390/include/asm/cmpxchg.h:10, from arch/s390/include/asm/atomic.h:19, from include/linux/atomic.h:4, from include/linux/debug_locks.h:5, from include/linux/lockdep.h:23, from include/linux/hardirq.h:5, from include/linux/kvm_host.h:10, from arch/s390/kernel/asm-offsets.c:10: include/linux/llist.h: In function 'llist_del_all': >> include/linux/llist.h:193:2: error: implicit declaration of function 'xchg' [-Werror=implicit-function-declaration] return xchg(&head->first, NULL); ^ >> include/linux/llist.h:193:2: warning: return makes pointer from integer without a cast In file included from include/linux/rcupdate.h:38:0, from include/linux/tracepoint.h:19, from include/linux/mmdebug.h:7, from arch/s390/include/asm/cmpxchg.h:10, from arch/s390/include/asm/atomic.h:19, from include/linux/atomic.h:4, from include/linux/debug_locks.h:5, from include/linux/lockdep.h:23, from include/linux/hardirq.h:5, from include/linux/kvm_host.h:10, from arch/s390/kernel/asm-offsets.c:10: include/linux/spinlock.h: At top level: >> include/linux/spinlock.h:94:15: warning: 'struct lock_class_key' declared inside parameter list struct lock_class_key *key); ^ >> include/linux/spinlock.h:94:15: warning: its scope is only this definition or declaration, which is probably not what you want In file included from include/linux/spinlock.h:274:0, from include/linux/rcupdate.h:38, from include/linux/tracepoint.h:19, from include/linux/mmdebug.h:7, from arch/s390/include/asm/cmpxchg.h:10, from arch/s390/include/asm/atomic.h:19, from include/linux/atomic.h:4, from include/linux/debug_locks.h:5, from include/linux/lockdep.h:23, from include/linux/hardirq.h:5, from include/linux/kvm_host.h:10, from arch/s390/kernel/asm-offsets.c:10: >> include/linux/rwlock.h:19:15: warning: 'struct lock_class_key' declared inside parameter list struct lock_class_key *key); ^ In file included from include/linux/spinlock.h:280:0, from include/linux/rcupdate.h:38, from include/linux/tracepoint.h:19, from include/linux/mmdebug.h:7, from arch/s390/include/asm/cmpxchg.h:10, from arch/s390/include/asm/atomic.h:19, from include/linux/atomic.h:4, from include/linux/debug_locks.h:5, from include/linux/lockdep.h:23, from include/linux/hardirq.h:5, from include/linux/kvm_host.h:10, from arch/s390/kernel/asm-offsets.c:10: include/linux/spinlock_api_smp.h: In function '__raw_spin_trylock': >> include/linux/spinlock_api_smp.h:92:3: error: implicit declaration of function 'spin_acquire' [-Werror=implicit-function-declaration] spin_acquire(&lock->dep_map, 0, 1, _RET_IP_); ^ include/linux/spinlock_api_smp.h: In function '__raw_spin_lock_irqsave': >> include/linux/spinlock_api_smp.h:119:2: error: implicit declaration of function 'LOCK_CONTENDED' [-Werror=implicit-function-declaration] LOCK_CONTENDED(lock, do_raw_spin_trylock, do_raw_spin_lock); ^ include/linux/spinlock_api_smp.h: In function '__raw_spin_unlock': >> include/linux/spinlock_api_smp.h:152:2: error: implicit declaration of function 'spin_release' [-Werror=implicit-function-declaration] spin_release(&lock->dep_map, 1, _RET_IP_); ^ In file included from include/linux/spinlock_api_smp.h:192:0, from include/linux/spinlock.h:280, from include/linux/rcupdate.h:38, from include/linux/tracepoint.h:19, from include/linux/mmdebug.h:7, from arch/s390/include/asm/cmpxchg.h:10, from arch/s390/include/asm/atomic.h:19, from include/linux/atomic.h:4, from include/linux/debug_locks.h:5, from include/linux/lockdep.h:23, from include/linux/hardirq.h:5, from include/linux/kvm_host.h:10, from arch/s390/kernel/asm-offsets.c:10: include/linux/rwlock_api_smp.h: In function '__raw_read_trylock': >> include/linux/rwlock_api_smp.h:121:3: error: implicit declaration of function 'rwlock_acquire_read' [-Werror=implicit-function-declaration] rwlock_acquire_read(&lock->dep_map, 0, 1, _RET_IP_); ^ include/linux/rwlock_api_smp.h: In function '__raw_write_trylock': >> include/linux/rwlock_api_smp.h:132:3: error: implicit declaration of function 'rwlock_acquire' [-Werror=implicit-function-declaration] rwlock_acquire(&lock->dep_map, 0, 1, _RET_IP_); ^ include/linux/rwlock_api_smp.h: In function '__raw_read_lock_irqsave': >> include/linux/rwlock_api_smp.h:160:2: error: implicit declaration of function 'LOCK_CONTENDED_FLAGS' [-Werror=implicit-function-declaration] LOCK_CONTENDED_FLAGS(lock, do_raw_read_trylock, do_raw_read_lock, ^ >> include/linux/rwlock_api_smp.h:161:9: error: 'do_raw_read_lock_flags' undeclared (first use in this function) do_raw_read_lock_flags, &flags); ^ include/linux/rwlock_api_smp.h:161:9: note: each undeclared identifier is reported only once for each function it appears in include/linux/rwlock_api_smp.h: In function '__raw_write_lock_irqsave': >> include/linux/rwlock_api_smp.h:188:9: error: 'do_raw_write_lock_flags' undeclared (first use in this function) do_raw_write_lock_flags, &flags); ^ include/linux/rwlock_api_smp.h: In function '__raw_write_unlock': >> include/linux/rwlock_api_smp.h:218:2: error: implicit declaration of function 'rwlock_release' [-Werror=implicit-function-declaration] rwlock_release(&lock->dep_map, 1, _RET_IP_); ^ In file included from include/linux/rcupdate.h:41:0, from include/linux/tracepoint.h:19, from include/linux/mmdebug.h:7, from arch/s390/include/asm/cmpxchg.h:10, from arch/s390/include/asm/atomic.h:19, from include/linux/atomic.h:4, from include/linux/debug_locks.h:5, from include/linux/lockdep.h:23, from include/linux/hardirq.h:5, from include/linux/kvm_host.h:10, from arch/s390/kernel/asm-offsets.c:10: include/linux/seqlock.h: At top level: >> include/linux/seqlock.h:50:21: error: field 'dep_map' has incomplete type struct lockdep_map dep_map; ^ >> include/linux/seqlock.h:55:15: warning: 'struct lock_class_key' declared inside parameter list struct lock_class_key *key) ^ include/linux/seqlock.h: In function '__seqcount_init': >> include/linux/seqlock.h:60:2: error: implicit declaration of function 'lockdep_init_map' [-Werror=implicit-function-declaration] lockdep_init_map(&s->dep_map, name, key, 0); ^ include/linux/seqlock.h: In function 'seqcount_lockdep_reader_access': >> include/linux/seqlock.h:80:2: error: implicit declaration of function 'seqcount_acquire_read' [-Werror=implicit-function-declaration] seqcount_acquire_read(&l->dep_map, 0, 0, _RET_IP_); ^ vim +/spin_lock_init +1602 include/linux/mm.h 49076ec2cc Kirill A. Shutemov 2013-11-14 1586 { 49076ec2cc Kirill A. Shutemov 2013-11-14 1587 return ptlock_ptr(pmd_page(*pmd)); 49076ec2cc Kirill A. Shutemov 2013-11-14 1588 } 49076ec2cc Kirill A. Shutemov 2013-11-14 1589 49076ec2cc Kirill A. Shutemov 2013-11-14 1590 static inline bool ptlock_init(struct page *page) 49076ec2cc Kirill A. Shutemov 2013-11-14 1591 { 4c21e2f244 Hugh Dickins 2005-10-29 1592 /* 49076ec2cc Kirill A. Shutemov 2013-11-14 1593 * prep_new_page() initialize page->private (and therefore page->ptl) 49076ec2cc Kirill A. Shutemov 2013-11-14 1594 * with 0. Make sure nobody took it in use in between. 49076ec2cc Kirill A. Shutemov 2013-11-14 1595 * 49076ec2cc Kirill A. Shutemov 2013-11-14 1596 * It can happen if arch try to use slab for page table allocation: 1d798ca3f1 Kirill A. Shutemov 2015-11-06 1597 * slab code uses page->slab_cache, which share storage with page->ptl. 4c21e2f244 Hugh Dickins 2005-10-29 1598 */ 309381feae Sasha Levin 2014-01-23 1599 VM_BUG_ON_PAGE(*(unsigned long *)&page->ptl, page); 49076ec2cc Kirill A. Shutemov 2013-11-14 1600 if (!ptlock_alloc(page)) 49076ec2cc Kirill A. Shutemov 2013-11-14 1601 return false; 49076ec2cc Kirill A. Shutemov 2013-11-14 @1602 spin_lock_init(ptlock_ptr(page)); 49076ec2cc Kirill A. Shutemov 2013-11-14 1603 return true; 49076ec2cc Kirill A. Shutemov 2013-11-14 1604 } 49076ec2cc Kirill A. Shutemov 2013-11-14 1605 49076ec2cc Kirill A. Shutemov 2013-11-14 1606 /* Reset page->mapping so free_pages_check won't complain. */ 49076ec2cc Kirill A. Shutemov 2013-11-14 1607 static inline void pte_lock_deinit(struct page *page) 49076ec2cc Kirill A. Shutemov 2013-11-14 1608 { 49076ec2cc Kirill A. Shutemov 2013-11-14 1609 page->mapping = NULL; 49076ec2cc Kirill A. Shutemov 2013-11-14 1610 ptlock_free(page); :::::: The code at line 1602 was first introduced by commit :::::: 49076ec2ccaf68610aa03d96bced9a6694b93ca1 mm: dynamically allocate page->ptl if it cannot be embedded to struct page :::::: TO: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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