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authorPeter Zijlstra <peterz@infradead.org>2014-07-16 16:54:55 +0400
committerIngo Molnar <mingo@kernel.org>2014-07-16 16:56:55 +0400
commit13b9a962a2594ee880c5d50d7f70964da1d4fe5a (patch)
tree6b9511aa222dcb670293f1db9042b85f3d69e111 /include/linux/rwsem-spinlock.h
parent33ecd2083a9560fbc1ef1b1279ef3ecb4c012a4f (diff)
downloadlinux-13b9a962a2594ee880c5d50d7f70964da1d4fe5a.tar.xz
locking/rwsem: Rename 'activity' to 'count'
There are two definitions of struct rw_semaphore, one in linux/rwsem.h and one in linux/rwsem-spinlock.h. For some reason they have different names for the initial field. This makes it impossible to use C99 named initialization for __RWSEM_INITIALIZER() -- or we have to duplicate that entire thing along with the structure definitions. The simpler patch is renaming the rwsem-spinlock variant to match the regular rwsem. This allows us to switch to C99 named initialization. Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: http://lkml.kernel.org/n/tip-bmrZolsbGmautmzrerog27io@git.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/rwsem-spinlock.h')
-rw-r--r--include/linux/rwsem-spinlock.h8
1 files changed, 4 insertions, 4 deletions
diff --git a/include/linux/rwsem-spinlock.h b/include/linux/rwsem-spinlock.h
index d5b13bc07a0b..561e8615528d 100644
--- a/include/linux/rwsem-spinlock.h
+++ b/include/linux/rwsem-spinlock.h
@@ -15,13 +15,13 @@
#ifdef __KERNEL__
/*
* the rw-semaphore definition
- * - if activity is 0 then there are no active readers or writers
- * - if activity is +ve then that is the number of active readers
- * - if activity is -1 then there is one active writer
+ * - if count is 0 then there are no active readers or writers
+ * - if count is +ve then that is the number of active readers
+ * - if count is -1 then there is one active writer
* - if wait_list is not empty, then there are processes waiting for the semaphore
*/
struct rw_semaphore {
- __s32 activity;
+ __s32 count;
raw_spinlock_t wait_lock;
struct list_head wait_list;
#ifdef CONFIG_DEBUG_LOCK_ALLOC