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ANDROID: GKI: locking/rwsem: add vendor field to struct rw_semaphore

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For ABI compatibility, we are adding a vendor field to support the
config CONFIG_RWSEM_PRIO_AWARE.

Bug: 151792119
Bug: 148872640
Signed-off-by: Maria Yu <aiquny@codeaurora.org>
Signed-off-by: Biao long <blong@codeaurora.org>
[willmcvicker: Only cherry-picked the ABI diff]
(cherry picked from commit c4b6927bb6)
Signed-off-by: Will McVicker <willmcvicker@google.com>
Change-Id: I3f289e2992af340b56c2df532ffeb418abf3da79
This commit is contained in:
Maria Yu
2018-11-29 13:57:53 +08:00
committed by Will McVicker
parent 46a302bbb0
commit 9298a1e640
1 changed files with 5 additions and 0 deletions
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5
include/linux/rwsem.h
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@@ -42,6 +42,11 @@ struct rw_semaphore {
#ifdef CONFIG_DEBUG_LOCK_ALLOC #ifdef CONFIG_DEBUG_LOCK_ALLOC
struct lockdep_map dep_map; struct lockdep_map dep_map;
#endif #endif
/* NOTICE: m_count is a vendor variable used for the config
* CONFIG_RWSEM_PRIO_AWARE. This is included here to maintain ABI
* compatibility with our vendors */
/* count for waiters preempt to queue in wait list */
long m_count;
}; };
/* /*