[rcu:dev.2017.04.28a 41/45] include/linux/notifier.h:77:21: error: field 'srcu' has incomplete type

From: kbuild test robot
Date: Sat Apr 29 2017 - 19:32:48 EST


tree: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2017.04.28a
head: 1205059ca5d4835e9213ff943ce3a51980718b5d
commit: e01ef0529ed548c1b30206058c2b5eecbbc07998 [41/45] srcu: Make SRCU be once again optional
config: sparc64-allnoconfig (attached as .config)
compiler: sparc64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout e01ef0529ed548c1b30206058c2b5eecbbc07998
# save the attached .config to linux build tree
make.cross ARCH=sparc64

All errors (new ones prefixed by >>):

In file included from include/linux/memory_hotplug.h:6:0,
from include/linux/mmzone.h:749,
from include/linux/gfp.h:5,
from include/linux/kmod.h:22,
from include/linux/module.h:13,
from init/main.c:16:
>> include/linux/notifier.h:77:21: error: field 'srcu' has incomplete type
struct srcu_struct srcu;
^~~~

vim +/srcu +77 include/linux/notifier.h

e041c6834 Alan Stern 2006-03-27 61 struct atomic_notifier_head {
e041c6834 Alan Stern 2006-03-27 62 spinlock_t lock;
374a8e0dc Arnd Bergmann 2010-02-24 63 struct notifier_block __rcu *head;
e041c6834 Alan Stern 2006-03-27 64 };
e041c6834 Alan Stern 2006-03-27 65
e041c6834 Alan Stern 2006-03-27 66 struct blocking_notifier_head {
e041c6834 Alan Stern 2006-03-27 67 struct rw_semaphore rwsem;
374a8e0dc Arnd Bergmann 2010-02-24 68 struct notifier_block __rcu *head;
e041c6834 Alan Stern 2006-03-27 69 };
e041c6834 Alan Stern 2006-03-27 70
e041c6834 Alan Stern 2006-03-27 71 struct raw_notifier_head {
374a8e0dc Arnd Bergmann 2010-02-24 72 struct notifier_block __rcu *head;
e041c6834 Alan Stern 2006-03-27 73 };
e041c6834 Alan Stern 2006-03-27 74
eabc06940 Alan Stern 2006-10-04 75 struct srcu_notifier_head {
eabc06940 Alan Stern 2006-10-04 76 struct mutex mutex;
eabc06940 Alan Stern 2006-10-04 @77 struct srcu_struct srcu;
374a8e0dc Arnd Bergmann 2010-02-24 78 struct notifier_block __rcu *head;
eabc06940 Alan Stern 2006-10-04 79 };
eabc06940 Alan Stern 2006-10-04 80
e041c6834 Alan Stern 2006-03-27 81 #define ATOMIC_INIT_NOTIFIER_HEAD(name) do { \
e041c6834 Alan Stern 2006-03-27 82 spin_lock_init(&(name)->lock); \
e041c6834 Alan Stern 2006-03-27 83 (name)->head = NULL; \
e041c6834 Alan Stern 2006-03-27 84 } while (0)
e041c6834 Alan Stern 2006-03-27 85 #define BLOCKING_INIT_NOTIFIER_HEAD(name) do { \

:::::: The code at line 77 was first introduced by commit
:::::: eabc069401bcf45bcc3f19e643017bf761780aa8 [PATCH] Add SRCU-based notifier chains

:::::: TO: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxx>

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