Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/tglx/linux...

* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-hrt:
  hrtimer: optimize the softirq time optimization
  hrtimer: reduce calls to hrtimer_get_softirq_time()
  clockevents: fix typo in tick-broadcast.c
  jiffies: add time_is_after_jiffies and others which compare with jiffies

diff --git a/include/linux/jiffies.h b/include/linux/jiffies.h
index e0b5b684d83f2969816f051acb2e1158da2fe06d..e377e34e589e8e5d3a2f2b566f35f54006648c87 100644 (file)
--- a/include/linux/jiffies.h
+++ b/include/linux/jiffies.h
@@ -134,6 +134,22 @@ static inline u64 get_jiffies_64(void)
         ((__s64)(a) - (__s64)(b) >= 0))
 #define time_before_eq64(a,b)  time_after_eq64(b,a)
 
+/*
+ * These four macros compare jiffies and 'a' for convenience.
+ */
+
+/* time_is_before_jiffies(a) return true if a is before jiffies */
+#define time_is_before_jiffies(a) time_after(jiffies, a)
+
+/* time_is_after_jiffies(a) return true if a is after jiffies */
+#define time_is_after_jiffies(a) time_before(jiffies, a)
+
+/* time_is_before_eq_jiffies(a) return true if a is before or equal to jiffies*/
+#define time_is_before_eq_jiffies(a) time_after_eq(jiffies, a)
+
+/* time_is_after_eq_jiffies(a) return true if a is after or equal to jiffies*/
+#define time_is_after_eq_jiffies(a) time_before_eq(jiffies, a)
+
 /*
  * Have the 32 bit jiffies value wrap 5 minutes after boot
  * so jiffies wrap bugs show up earlier.

diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index c642ef75069f28f4b230bea197dcbf86e3ea4b95..f78777abe769e1e3608b8f751d1c996f05aeea13 100644 (file)
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -1238,51 +1238,50 @@ void hrtimer_run_pending(void)
 /*
  * Called from hardirq context every jiffy
  */
-static inline void run_hrtimer_queue(struct hrtimer_cpu_base *cpu_base,
-                                    int index)
+void hrtimer_run_queues(void)
 {
        struct rb_node *node;
-       struct hrtimer_clock_base *base = &cpu_base->clock_base[index];
+       struct hrtimer_cpu_base *cpu_base = &__get_cpu_var(hrtimer_bases);
+       struct hrtimer_clock_base *base;
+       int index, gettime = 1;
 
-       if (!base->first)
+       if (hrtimer_hres_active())
                return;
 
-       if (base->get_softirq_time)
-               base->softirq_time = base->get_softirq_time();
-
-       spin_lock(&cpu_base->lock);
+       for (index = 0; index < HRTIMER_MAX_CLOCK_BASES; index++) {
+               base = &cpu_base->clock_base[index];
 
-       while ((node = base->first)) {
-               struct hrtimer *timer;
-
-               timer = rb_entry(node, struct hrtimer, node);
-               if (base->softirq_time.tv64 <= timer->expires.tv64)
-                       break;
-
-               if (timer->cb_mode == HRTIMER_CB_SOFTIRQ) {
-                       __remove_hrtimer(timer, base, HRTIMER_STATE_PENDING, 0);
-                       list_add_tail(&timer->cb_entry,
-                                       &base->cpu_base->cb_pending);
+               if (!base->first)
                        continue;
+
+               if (base->get_softirq_time)
+                       base->softirq_time = base->get_softirq_time();
+               else if (gettime) {
+                       hrtimer_get_softirq_time(cpu_base);
+                       gettime = 0;
                }
 
-               __run_hrtimer(timer);
-       }
-       spin_unlock(&cpu_base->lock);
-}
+               spin_lock(&cpu_base->lock);
 
-void hrtimer_run_queues(void)
-{
-       struct hrtimer_cpu_base *cpu_base = &__get_cpu_var(hrtimer_bases);
-       int i;
+               while ((node = base->first)) {
+                       struct hrtimer *timer;
 
-       if (hrtimer_hres_active())
-               return;
+                       timer = rb_entry(node, struct hrtimer, node);
+                       if (base->softirq_time.tv64 <= timer->expires.tv64)
+                               break;
 
-       hrtimer_get_softirq_time(cpu_base);
+                       if (timer->cb_mode == HRTIMER_CB_SOFTIRQ) {
+                               __remove_hrtimer(timer, base,
+                                       HRTIMER_STATE_PENDING, 0);
+                               list_add_tail(&timer->cb_entry,
+                                       &base->cpu_base->cb_pending);
+                               continue;
+                       }
 
-       for (i = 0; i < HRTIMER_MAX_CLOCK_BASES; i++)
-               run_hrtimer_queue(cpu_base, i);
+                       __run_hrtimer(timer);
+               }
+               spin_unlock(&cpu_base->lock);
+       }
 }
 
 /*

diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c
index fdfa0c745bb612f45c2b639827c3533bb6c29120..57a1f02e5ec07fc20a6715d40d7fe41855449727 100644 (file)
--- a/kernel/time/tick-broadcast.c
+++ b/kernel/time/tick-broadcast.c
@@ -262,7 +262,7 @@ out:
 void tick_broadcast_on_off(unsigned long reason, int *oncpu)
 {
        if (!cpu_isset(*oncpu, cpu_online_map))
-               printk(KERN_ERR "tick-braodcast: ignoring broadcast for "
+               printk(KERN_ERR "tick-broadcast: ignoring broadcast for "
                       "offline CPU #%d\n", *oncpu);
        else
                smp_call_function_single(*oncpu, tick_do_broadcast_on_off,