Convert uid hash to hlist

[cascardo/linux.git] / kernel / sched.c

diff --git a/kernel/sched.c b/kernel/sched.c
index 96e9b82..deeb1f8 100644 (file)
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -668,7 +668,7 @@ static u64 div64_likely32(u64 divident, unsigned long divisor)
 /*
  * Shift right and round:
  */
-#define RSR(x, y) (((x) + (1UL << ((y) - 1))) >> (y))
+#define SRR(x, y) (((x) + (1UL << ((y) - 1))) >> (y))
 
 static unsigned long
 calc_delta_mine(unsigned long delta_exec, unsigned long weight,
@@ -684,10 +684,10 @@ calc_delta_mine(unsigned long delta_exec, unsigned long weight,
         * Check whether we'd overflow the 64-bit multiplication:
         */
        if (unlikely(tmp > WMULT_CONST))
-               tmp = RSR(RSR(tmp, WMULT_SHIFT/2) * lw->inv_weight,
+               tmp = SRR(SRR(tmp, WMULT_SHIFT/2) * lw->inv_weight,
                        WMULT_SHIFT/2);
        else
-               tmp = RSR(tmp * lw->inv_weight, WMULT_SHIFT);
+               tmp = SRR(tmp * lw->inv_weight, WMULT_SHIFT);
 
        return (unsigned long)min(tmp, (u64)(unsigned long)LONG_MAX);
 }
@@ -858,7 +858,6 @@ static void dec_nr_running(struct task_struct *p, struct rq *rq)
 
 static void set_load_weight(struct task_struct *p)
 {
-       task_rq(p)->cfs.wait_runtime -= p->se.wait_runtime;
        p->se.wait_runtime = 0;
 
        if (task_has_rt_policy(p)) {
@@ -1587,6 +1586,7 @@ static void __sched_fork(struct task_struct *p)
        p->se.wait_start_fair           = 0;
        p->se.exec_start                = 0;
        p->se.sum_exec_runtime          = 0;
+       p->se.prev_sum_exec_runtime     = 0;
        p->se.delta_exec                = 0;
        p->se.delta_fair_run            = 0;
        p->se.delta_fair_sleep          = 0;
@@ -2180,12 +2180,6 @@ int can_migrate_task(struct task_struct *p, struct rq *rq, int this_cpu,
        if (task_running(rq, p))
                return 0;
 
-       /*
-        * Aggressive migration if too many balance attempts have failed:
-        */
-       if (sd->nr_balance_failed > sd->cache_nice_tries)
-               return 1;
-
        return 1;
 }
 
@@ -2517,7 +2511,7 @@ group_next:
         * a think about bumping its value to force at least one task to be
         * moved
         */
-       if (*imbalance + SCHED_LOAD_SCALE_FUZZ < busiest_load_per_task) {
+       if (*imbalance < busiest_load_per_task) {
                unsigned long tmp, pwr_now, pwr_move;
                unsigned int imbn;
 
@@ -2569,10 +2563,8 @@ small_imbalance:
                pwr_move /= SCHED_LOAD_SCALE;
 
                /* Move if we gain throughput */
-               if (pwr_move <= pwr_now)
-                       goto out_balanced;
-
-               *imbalance = busiest_load_per_task;
+               if (pwr_move > pwr_now)
+                       *imbalance = busiest_load_per_task;
        }
 
        return busiest;
@@ -4917,14 +4909,18 @@ cpumask_t nohz_cpu_mask = CPU_MASK_NONE;
 static inline void sched_init_granularity(void)
 {
        unsigned int factor = 1 + ilog2(num_online_cpus());
-       const unsigned long gran_limit = 100000000;
+       const unsigned long limit = 100000000;
+
+       sysctl_sched_min_granularity *= factor;
+       if (sysctl_sched_min_granularity > limit)
+               sysctl_sched_min_granularity = limit;
 
-       sysctl_sched_granularity *= factor;
-       if (sysctl_sched_granularity > gran_limit)
-               sysctl_sched_granularity = gran_limit;
+       sysctl_sched_latency *= factor;
+       if (sysctl_sched_latency > limit)
+               sysctl_sched_latency = limit;
 
-       sysctl_sched_runtime_limit = sysctl_sched_granularity * 8;
-       sysctl_sched_wakeup_granularity = sysctl_sched_granularity / 2;
+       sysctl_sched_runtime_limit = sysctl_sched_latency;
+       sysctl_sched_wakeup_granularity = sysctl_sched_min_granularity / 2;
 }
 
 #ifdef CONFIG_SMP