linux-kernel - [PATCH v3 3/6] rtmutex: Move "rt_mutex_waiter" definition to "include/linux/rtmutex.h"

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Date:	Thu, 14 Apr 2016 19:37:04 +0800
From:	Xunlei Pang <xlpang@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Juri Lelli <juri.lelli@....com>,
	Ingo Molnar <mingo@...hat.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Xunlei Pang <xlpang@...hat.com>
Subject: [PATCH v3 3/6] rtmutex: Move "rt_mutex_waiter" definition to "include/linux/rtmutex.h"

Deadline code will need it, so make it visible to deadline.

Signed-off-by: Xunlei Pang <xlpang@...hat.com>
---
 include/linux/rtmutex.h         | 22 +++++++++++++++++++++-
 kernel/locking/rtmutex_common.h | 21 ---------------------
 2 files changed, 21 insertions(+), 22 deletions(-)

diff --git a/include/linux/rtmutex.h b/include/linux/rtmutex.h
index 1abba5c..f9bf40a 100644
--- a/include/linux/rtmutex.h
+++ b/include/linux/rtmutex.h
@@ -39,7 +39,27 @@ struct rt_mutex {
 #endif
 };
 
-struct rt_mutex_waiter;
+/*
+ * This is the control structure for tasks blocked on a rt_mutex,
+ * which is allocated on the kernel stack on of the blocked task.
+ *
+ * @tree_entry:		pi node to enqueue into the mutex waiters tree
+ * @pi_tree_entry:	pi node to enqueue into the mutex owner waiters tree
+ * @task:		task reference to the blocked task
+ */
+struct rt_mutex_waiter {
+	struct rb_node          tree_entry;
+	struct rb_node          pi_tree_entry;
+	struct task_struct	*task;
+	struct rt_mutex		*lock;
+#ifdef CONFIG_DEBUG_RT_MUTEXES
+	unsigned long		ip;
+	struct pid		*deadlock_task_pid;
+	struct rt_mutex		*deadlock_lock;
+#endif
+	int prio;
+};
+
 struct hrtimer_sleeper;
 
 #ifdef CONFIG_DEBUG_RT_MUTEXES
diff --git a/kernel/locking/rtmutex_common.h b/kernel/locking/rtmutex_common.h
index 93b0924..c94adcd 100644
--- a/kernel/locking/rtmutex_common.h
+++ b/kernel/locking/rtmutex_common.h
@@ -15,27 +15,6 @@
 #include <linux/rtmutex.h>
 
 /*
- * This is the control structure for tasks blocked on a rt_mutex,
- * which is allocated on the kernel stack on of the blocked task.
- *
- * @tree_entry:		pi node to enqueue into the mutex waiters tree
- * @pi_tree_entry:	pi node to enqueue into the mutex owner waiters tree
- * @task:		task reference to the blocked task
- */
-struct rt_mutex_waiter {
-	struct rb_node          tree_entry;
-	struct rb_node          pi_tree_entry;
-	struct task_struct	*task;
-	struct rt_mutex		*lock;
-#ifdef CONFIG_DEBUG_RT_MUTEXES
-	unsigned long		ip;
-	struct pid		*deadlock_task_pid;
-	struct rt_mutex		*deadlock_lock;
-#endif
-	int prio;
-};
-
-/*
  * Various helpers to access the waiters-tree:
  */
 static inline int rt_mutex_has_waiters(struct rt_mutex *lock)
-- 
1.8.3.1