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-rw-r--r--kernel/slow-work.c46
1 files changed, 29 insertions, 17 deletions
diff --git a/kernel/slow-work.c b/kernel/slow-work.c
index da94f3c101a..b5c17f15f9d 100644
--- a/kernel/slow-work.c
+++ b/kernel/slow-work.c
@@ -109,6 +109,30 @@ static struct module *slow_work_unreg_module;
static struct slow_work *slow_work_unreg_work_item;
static DECLARE_WAIT_QUEUE_HEAD(slow_work_unreg_wq);
static DEFINE_MUTEX(slow_work_unreg_sync_lock);
+
+static void slow_work_set_thread_processing(int id, struct slow_work *work)
+{
+ if (work)
+ slow_work_thread_processing[id] = work->owner;
+}
+static void slow_work_done_thread_processing(int id, struct slow_work *work)
+{
+ struct module *module = slow_work_thread_processing[id];
+
+ slow_work_thread_processing[id] = NULL;
+ smp_mb();
+ if (slow_work_unreg_work_item == work ||
+ slow_work_unreg_module == module)
+ wake_up_all(&slow_work_unreg_wq);
+}
+static void slow_work_clear_thread_processing(int id)
+{
+ slow_work_thread_processing[id] = NULL;
+}
+#else
+static void slow_work_set_thread_processing(int id, struct slow_work *work) {}
+static void slow_work_done_thread_processing(int id, struct slow_work *work) {}
+static void slow_work_clear_thread_processing(int id) {}
#endif
/*
@@ -197,9 +221,6 @@ static unsigned slow_work_calc_vsmax(void)
*/
static noinline bool slow_work_execute(int id)
{
-#ifdef CONFIG_MODULES
- struct module *module;
-#endif
struct slow_work *work = NULL;
unsigned vsmax;
bool very_slow;
@@ -236,10 +257,7 @@ static noinline bool slow_work_execute(int id)
very_slow = false; /* avoid the compiler warning */
}
-#ifdef CONFIG_MODULES
- if (work)
- slow_work_thread_processing[id] = work->owner;
-#endif
+ slow_work_set_thread_processing(id, work);
if (work) {
slow_work_mark_time(work);
slow_work_begin_exec(id, work);
@@ -287,15 +305,7 @@ static noinline bool slow_work_execute(int id)
/* sort out the race between module unloading and put_ref() */
slow_work_put_ref(work);
-
-#ifdef CONFIG_MODULES
- module = slow_work_thread_processing[id];
- slow_work_thread_processing[id] = NULL;
- smp_mb();
- if (slow_work_unreg_work_item == work ||
- slow_work_unreg_module == module)
- wake_up_all(&slow_work_unreg_wq);
-#endif
+ slow_work_done_thread_processing(id, work);
return true;
@@ -310,7 +320,7 @@ auto_requeue:
else
list_add_tail(&work->link, &slow_work_queue);
spin_unlock_irq(&slow_work_queue_lock);
- slow_work_thread_processing[id] = NULL;
+ slow_work_clear_thread_processing(id);
return true;
}
@@ -943,6 +953,7 @@ EXPORT_SYMBOL(slow_work_register_user);
*/
static void slow_work_wait_for_items(struct module *module)
{
+#ifdef CONFIG_MODULES
DECLARE_WAITQUEUE(myself, current);
struct slow_work *work;
int loop;
@@ -989,6 +1000,7 @@ static void slow_work_wait_for_items(struct module *module)
remove_wait_queue(&slow_work_unreg_wq, &myself);
mutex_unlock(&slow_work_unreg_sync_lock);
+#endif /* CONFIG_MODULES */
}
/**