Make lock name alloc dynamic

3 files changed, 20 insertions, 10 deletions

diff --git a/include/litmus/locking.h b/include/litmus/locking.h
index 02cc9cf4bb55..3ae6692dbe95 100644
--- a/include/litmus/locking.h
+++ b/include/litmus/locking.h
@@ -48,8 +48,7 @@ struct litmus_lock {
 #endif
 
         struct litmus_lock_proc_ops *proc;
-        struct proc_dir_entry *proc_entry;
-        char name[LOCK_NAME_LEN];
+        char *name;
 };
 
 #ifdef CONFIG_LITMUS_DGL_SUPPORT
diff --git a/litmus/fifo_lock.c b/litmus/fifo_lock.c
index b3e956f5a93a..0cbba2424701 100644
--- a/litmus/fifo_lock.c
+++ b/litmus/fifo_lock.c
@@ -878,14 +878,20 @@ static int fifo_proc_print(char *page, char **start, off_t off, int count, int *
 
 static void fifo_proc_add(struct litmus_lock* l)
 {
+        if (!l->name)
+                l->name = kmalloc(LOCK_NAME_LEN*sizeof(char), GFP_KERNEL);
         snprintf(l->name, LOCK_NAME_LEN, "fifo-%d", l->ident);
-
-        l->proc_entry = litmus_add_proc_lock(l, fifo_proc_print);
+        litmus_add_proc_lock(l, fifo_proc_print);
 }
 
 static void fifo_proc_remove(struct litmus_lock* l)
 {
-        litmus_remove_proc_lock(l);
+        if (l->name) {
+                litmus_remove_proc_lock(l);
+
+                kfree(l->name);
+                l->name = NULL;
+        }
 }
 
 static struct litmus_lock_proc_ops fifo_proc_ops =
@@ -905,7 +911,7 @@ struct litmus_lock* fifo_mutex_new(struct litmus_lock_ops* ops)
         memset(mutex, 0, sizeof(*mutex));
 
         mutex->litmus_lock.ops = ops;
-        mutex->owner   = NULL;
+        mutex->owner = NULL;
         mutex->hp_waiter = NULL;
         init_waitqueue_head(&mutex->wait);
 
diff --git a/litmus/prioq_lock.c b/litmus/prioq_lock.c
index 142f56fe9099..c9ffab1564c3 100644
--- a/litmus/prioq_lock.c
+++ b/litmus/prioq_lock.c
@@ -1454,14 +1454,20 @@ static int prioq_proc_print(char *page, char **start, off_t off, int count, int
 
 static void prioq_proc_add(struct litmus_lock* l)
 {
+        if (!l->name)
+                l->name = kmalloc(LOCK_NAME_LEN*sizeof(char), GFP_KERNEL);
         snprintf(l->name, LOCK_NAME_LEN, "prioq-%d", l->ident);
-
-        l->proc_entry = litmus_add_proc_lock(l, prioq_proc_print);
+        litmus_add_proc_lock(l, prioq_proc_print);
 }
 
 static void prioq_proc_remove(struct litmus_lock* l)
 {
-        litmus_remove_proc_lock(l);
+        if (l->name) {
+                litmus_remove_proc_lock(l);
+
+                kfree(l->name);
+                l->name = NULL;
+        }
 }
 
 static struct litmus_lock_proc_ops prioq_proc_ops =
@@ -1485,7 +1491,6 @@ struct litmus_lock* prioq_mutex_new(struct litmus_lock_ops* ops)
         mutex->hp_waiter = NULL;
         init_waitqueue_head(&mutex->wait);
 
-
 #ifdef CONFIG_DEBUG_SPINLOCK
         {
                 __raw_spin_lock_init(&mutex->lock,