1 files changed, 24 insertions, 1 deletions

diff --git a/include/linux/timer.h b/include/linux/timer.h
index a2d1eb6cb3f0..38cf093ef62c 100644
--- a/include/linux/timer.h
+++ b/include/linux/timer.h
@@ -10,13 +10,19 @@
 struct tvec_base;
 
 struct timer_list {
+        /*
+         * All fields that change during normal runtime grouped to the
+         * same cacheline
+         */
         struct list_head entry;
         unsigned long expires;
+        struct tvec_base *base;
 
         void (*function)(unsigned long);
         unsigned long data;
 
-        struct tvec_base *base;
+        int slack;
+
 #ifdef CONFIG_TIMER_STATS
         void *start_site;
         char start_comm[16];
@@ -94,6 +100,13 @@ void init_timer_deferrable_key(struct timer_list *timer,
                 setup_timer_on_stack_key((timer), #timer, &__key,       \
                                          (fn), (data));                 \
         } while (0)
+#define setup_deferrable_timer_on_stack(timer, fn, data)                \
+        do {                                                            \
+                static struct lock_class_key __key;                     \
+                setup_deferrable_timer_on_stack_key((timer), #timer,    \
+                                                    &__key, (fn),       \
+                                                    (data));            \
+        } while (0)
 #else
 #define init_timer(timer)\
         init_timer_key((timer), NULL, NULL)
@@ -105,6 +118,8 @@ void init_timer_deferrable_key(struct timer_list *timer,
         setup_timer_key((timer), NULL, NULL, (fn), (data))
 #define setup_timer_on_stack(timer, fn, data)\
         setup_timer_on_stack_key((timer), NULL, NULL, (fn), (data))
+#define setup_deferrable_timer_on_stack(timer, fn, data)\
+        setup_deferrable_timer_on_stack_key((timer), NULL, NULL, (fn), (data))
 #endif
 
 #ifdef CONFIG_DEBUG_OBJECTS_TIMERS
@@ -144,6 +159,12 @@ static inline void setup_timer_on_stack_key(struct timer_list *timer,
         init_timer_on_stack_key(timer, name, key);
 }
 
+extern void setup_deferrable_timer_on_stack_key(struct timer_list *timer,
+                                                const char *name,
+                                                struct lock_class_key *key,
+                                                void (*function)(unsigned long),
+                                                unsigned long data);
+
 /**
  * timer_pending - is a timer pending?
  * @timer: the timer in question
@@ -165,6 +186,8 @@ extern int mod_timer(struct timer_list *timer, unsigned long expires);
 extern int mod_timer_pending(struct timer_list *timer, unsigned long expires);
 extern int mod_timer_pinned(struct timer_list *timer, unsigned long expires);
 
+extern void set_timer_slack(struct timer_list *time, int slack_hz);
+
 #define TIMER_NOT_PINNED        0
 #define TIMER_PINNED            1
 /*