Merge git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched

* git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched:
  sched debug: dont print kernel address in /proc/sched_debug
  sched: fix typo in the FAIR_GROUP_SCHED branch
  sched: improve rq-clock overflow logic

diff --git a/kernel/sched.c b/kernel/sched.c
index b0afd8d..6247e4a 100644 (file)
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -263,6 +263,7 @@ struct rq {
 
        unsigned int clock_warps, clock_overflows;
        unsigned int clock_unstable_events;
+       u64 tick_timestamp;
 
        atomic_t nr_iowait;
 
@@ -341,8 +342,11 @@ static void __update_rq_clock(struct rq *rq)
                /*
                 * Catch too large forward jumps too:
                 */
-               if (unlikely(delta > 2*TICK_NSEC)) {
-                       clock++;
+               if (unlikely(clock + delta > rq->tick_timestamp + TICK_NSEC)) {
+                       if (clock < rq->tick_timestamp + TICK_NSEC)
+                               clock = rq->tick_timestamp + TICK_NSEC;
+                       else
+                               clock++;
                        rq->clock_overflows++;
                } else {
                        if (unlikely(delta > rq->clock_max_delta))
@@ -3308,9 +3312,16 @@ void scheduler_tick(void)
        int cpu = smp_processor_id();
        struct rq *rq = cpu_rq(cpu);
        struct task_struct *curr = rq->curr;
+       u64 next_tick = rq->tick_timestamp + TICK_NSEC;
 
        spin_lock(&rq->lock);
        __update_rq_clock(rq);
+       /*
+        * Let rq->clock advance by at least TICK_NSEC:
+        */
+       if (unlikely(rq->clock < next_tick))
+               rq->clock = next_tick;
+       rq->tick_timestamp = rq->clock;
        update_cpu_load(rq);
        if (curr != rq->idle) /* FIXME: needed? */
                curr->sched_class->task_tick(rq, curr);

diff --git a/kernel/sched_debug.c b/kernel/sched_debug.c
index 3da3215..87e5247 100644 (file)
--- a/kernel/sched_debug.c
+++ b/kernel/sched_debug.c
@@ -108,7 +108,7 @@ print_cfs_rq_runtime_sum(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
 
 void print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
 {
-       SEQ_printf(m, "\ncfs_rq %p\n", cfs_rq);
+       SEQ_printf(m, "\ncfs_rq\n");
 
 #define P(x) \
        SEQ_printf(m, "  .%-30s: %Ld\n", #x, (long long)(cfs_rq->x))

diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index e91db32..c5af389 100644 (file)
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -959,13 +959,12 @@ load_balance_fair(struct rq *this_rq, int this_cpu, struct rq *busiest,
        for_each_leaf_cfs_rq(busiest, busy_cfs_rq) {
 #ifdef CONFIG_FAIR_GROUP_SCHED
                struct cfs_rq *this_cfs_rq;
-               long imbalances;
+               long imbalance;
                unsigned long maxload;
 
                this_cfs_rq = cpu_cfs_rq(busy_cfs_rq, this_cpu);
 
-               imbalance = busy_cfs_rq->load.weight -
-                                                this_cfs_rq->load.weight;
+               imbalance = busy_cfs_rq->load.weight - this_cfs_rq->load.weight;
                /* Don't pull if this_cfs_rq has more load than busy_cfs_rq */
                if (imbalance <= 0)
                        continue;
@@ -976,7 +975,7 @@ load_balance_fair(struct rq *this_rq, int this_cpu, struct rq *busiest,
 
                *this_best_prio = cfs_rq_best_prio(this_cfs_rq);
 #else
-#define maxload rem_load_move
+# define maxload rem_load_move
 #endif
                /* pass busy_cfs_rq argument into
                 * load_balance_[start|next]_fair iterators