1 files changed, 13 insertions, 3 deletions

diff --git a/kernel/livepatch/transition.c b/kernel/livepatch/transition.c
index 300273819674..ea7697bb753e 100644
--- a/kernel/livepatch/transition.c
+++ b/kernel/livepatch/transition.c
@@ -29,10 +29,14 @@
 #define MAX_STACK_ENTRIES  100
 #define STACK_ERR_BUF_SIZE 128
 
+#define SIGNALS_TIMEOUT 15
+
 struct klp_patch *klp_transition_patch;
 
 static int klp_target_state = KLP_UNDEFINED;
 
+static unsigned int klp_signals_cnt;
+
 /*
  * This work can be performed periodically to finish patching or unpatching any
  * "straggler" tasks which failed to transition in the first attempt.
@@ -393,6 +397,10 @@ void klp_try_complete_transition(void)
         put_online_cpus();
 
         if (!complete) {
+                if (klp_signals_cnt && !(klp_signals_cnt % SIGNALS_TIMEOUT))
+                        klp_send_signals();
+                klp_signals_cnt++;
+
                 /*
                  * Some tasks weren't able to be switched over.  Try again
                  * later and/or wait for other methods like kernel exit
@@ -454,6 +462,8 @@ void klp_start_transition(void)
                 if (task->patch_state != klp_target_state)
                         set_tsk_thread_flag(task, TIF_PATCH_PENDING);
         }
+
+        klp_signals_cnt = 0;
 }
 
 /*
@@ -578,14 +588,14 @@ void klp_copy_process(struct task_struct *child)
 
 /*
  * Sends a fake signal to all non-kthread tasks with TIF_PATCH_PENDING set.
- * Kthreads with TIF_PATCH_PENDING set are woken up. Only admin can request this
- * action currently.
+ * Kthreads with TIF_PATCH_PENDING set are woken up.
  */
 void klp_send_signals(void)
 {
         struct task_struct *g, *task;
 
-        pr_notice("signaling remaining tasks\n");
+        if (klp_signals_cnt == SIGNALS_TIMEOUT)
+                pr_notice("signaling remaining tasks\n");
 
         read_lock(&tasklist_lock);
         for_each_process_thread(g, task) {