posix-clock: Fix return code on the poll method's error path

[pandora-kernel.git] / kernel / sched_stoptask.c

diff --git a/kernel/sched_stoptask.c b/kernel/sched_stoptask.c
index 8b44e7f..85e9da2 100644 (file)
--- a/kernel/sched_stoptask.c
+++ b/kernel/sched_stoptask.c
@@ -25,8 +25,10 @@ static struct task_struct *pick_next_task_stop(struct rq *rq)
 {
        struct task_struct *stop = rq->stop;
 
-       if (stop && stop->on_rq)
+       if (stop && stop->on_rq) {
+               stop->se.exec_start = rq->clock_task;
                return stop;
+       }
 
        return NULL;
 }
@@ -50,6 +52,21 @@ static void yield_task_stop(struct rq *rq)
 
 static void put_prev_task_stop(struct rq *rq, struct task_struct *prev)
 {
+       struct task_struct *curr = rq->curr;
+       u64 delta_exec;
+
+       delta_exec = rq->clock_task - curr->se.exec_start;
+       if (unlikely((s64)delta_exec < 0))
+               delta_exec = 0;
+
+       schedstat_set(curr->se.statistics.exec_max,
+                       max(curr->se.statistics.exec_max, delta_exec));
+
+       curr->se.sum_exec_runtime += delta_exec;
+       account_group_exec_runtime(curr, delta_exec);
+
+       curr->se.exec_start = rq->clock_task;
+       cpuacct_charge(curr, delta_exec);
 }
 
 static void task_tick_stop(struct rq *rq, struct task_struct *curr, int queued)
@@ -58,6 +75,9 @@ static void task_tick_stop(struct rq *rq, struct task_struct *curr, int queued)
 
 static void set_curr_task_stop(struct rq *rq)
 {
+       struct task_struct *stop = rq->stop;
+
+       stop->se.exec_start = rq->clock_task;
 }
 
 static void switched_to_stop(struct rq *rq, struct task_struct *p)