1 files changed, 11 insertions, 15 deletions
diff --git a/kernel/tracepoint.c b/kernel/tracepoint.c
index 33cbd8c203f8..3490407dc7b7 100644
--- a/kernel/tracepoint.c
+++ b/kernel/tracepoint.c
@@ -492,33 +492,29 @@ static int sys_tracepoint_refcount;
 void syscall_regfunc(void)
 {
-        unsigned long flags;
+        struct task_struct *p, *t;
-        struct task_struct *g, *t;
        if (!sys_tracepoint_refcount) {
-                read_lock_irqsave(&tasklist_lock, flags);
+                read_lock(&tasklist_lock);
-                do_each_thread(g, t) {
+                for_each_process_thread(p, t) {
-                        /* Skip kernel threads. */
+                        set_tsk_thread_flag(t, TIF_SYSCALL_TRACEPOINT);
-                        if (t->mm)
+                }
-                                set_tsk_thread_flag(t, TIF_SYSCALL_TRACEPOINT);
+                read_unlock(&tasklist_lock);
-                } while_each_thread(g, t);
-                read_unlock_irqrestore(&tasklist_lock, flags);
        }
        sys_tracepoint_refcount++;
 }
 void syscall_unregfunc(void)
 {
-        unsigned long flags;
+        struct task_struct *p, *t;
-        struct task_struct *g, *t;
        sys_tracepoint_refcount--;
        if (!sys_tracepoint_refcount) {
-                read_lock_irqsave(&tasklist_lock, flags);
+                read_lock(&tasklist_lock);
-                do_each_thread(g, t) {
+                for_each_process_thread(p, t) {
                        clear_tsk_thread_flag(t, TIF_SYSCALL_TRACEPOINT);
-                } while_each_thread(g, t);
+                }
-                read_unlock_irqrestore(&tasklist_lock, flags);
+                read_unlock(&tasklist_lock);
        }
 }
 #endif