Merge remote-tracking branch 'origin' into irqdomain/next

52 files changed, 2748 insertions, 2278 deletions

diff --git a/kernel/async.c b/kernel/async.c
index bd0c168a3bbe..9d3118384858 100644
--- a/kernel/async.c
+++ b/kernel/async.c
@@ -62,8 +62,10 @@ static async_cookie_t next_cookie = 1;
 #define MAX_WORK        32768
 
 static LIST_HEAD(async_pending);
-static LIST_HEAD(async_running);
+static ASYNC_DOMAIN(async_running);
+static LIST_HEAD(async_domains);
 static DEFINE_SPINLOCK(async_lock);
+static DEFINE_MUTEX(async_register_mutex);
 
 struct async_entry {
         struct list_head        list;
@@ -71,7 +73,7 @@ struct async_entry {
         async_cookie_t          cookie;
         async_func_ptr          *func;
         void                    *data;
-        struct list_head        *running;
+        struct async_domain     *running;
 };
 
 static DECLARE_WAIT_QUEUE_HEAD(async_done);
@@ -82,13 +84,12 @@ static atomic_t entry_count;
 /*
  * MUST be called with the lock held!
  */
-static async_cookie_t  __lowest_in_progress(struct list_head *running)
+static async_cookie_t  __lowest_in_progress(struct async_domain *running)
 {
         struct async_entry *entry;
 
-        if (!list_empty(running)) {
-                entry = list_first_entry(running,
-                        struct async_entry, list);
+        if (!list_empty(&running->domain)) {
+                entry = list_first_entry(&running->domain, typeof(*entry), list);
                 return entry->cookie;
         }
 
@@ -99,7 +100,7 @@ static async_cookie_t  __lowest_in_progress(struct list_head *running)
         return next_cookie;     /* "infinity" value */
 }
 
-static async_cookie_t  lowest_in_progress(struct list_head *running)
+static async_cookie_t  lowest_in_progress(struct async_domain *running)
 {
         unsigned long flags;
         async_cookie_t ret;
@@ -119,10 +120,11 @@ static void async_run_entry_fn(struct work_struct *work)
                 container_of(work, struct async_entry, work);
         unsigned long flags;
         ktime_t uninitialized_var(calltime), delta, rettime;
+        struct async_domain *running = entry->running;
 
         /* 1) move self to the running queue */
         spin_lock_irqsave(&async_lock, flags);
-        list_move_tail(&entry->list, entry->running);
+        list_move_tail(&entry->list, &running->domain);
         spin_unlock_irqrestore(&async_lock, flags);
 
         /* 2) run (and print duration) */
@@ -145,6 +147,8 @@ static void async_run_entry_fn(struct work_struct *work)
         /* 3) remove self from the running queue */
         spin_lock_irqsave(&async_lock, flags);
         list_del(&entry->list);
+        if (running->registered && --running->count == 0)
+                list_del_init(&running->node);
 
         /* 4) free the entry */
         kfree(entry);
@@ -156,7 +160,7 @@ static void async_run_entry_fn(struct work_struct *work)
         wake_up(&async_done);
 }
 
-static async_cookie_t __async_schedule(async_func_ptr *ptr, void *data, struct list_head *running)
+static async_cookie_t __async_schedule(async_func_ptr *ptr, void *data, struct async_domain *running)
 {
         struct async_entry *entry;
         unsigned long flags;
@@ -187,6 +191,8 @@ static async_cookie_t __async_schedule(async_func_ptr *ptr, void *data, struct l
         spin_lock_irqsave(&async_lock, flags);
         newcookie = entry->cookie = next_cookie++;
         list_add_tail(&entry->list, &async_pending);
+        if (running->registered && running->count++ == 0)
+                list_add_tail(&running->node, &async_domains);
         atomic_inc(&entry_count);
         spin_unlock_irqrestore(&async_lock, flags);
 
@@ -223,7 +229,7 @@ EXPORT_SYMBOL_GPL(async_schedule);
  * Note: This function may be called from atomic or non-atomic contexts.
  */
 async_cookie_t async_schedule_domain(async_func_ptr *ptr, void *data,
-                                     struct list_head *running)
+                                     struct async_domain *running)