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authorFrederic Weisbecker <fweisbec@gmail.com>2013-04-12 03:51:02 +0400
committerIngo Molnar <mingo@kernel.org>2013-05-28 11:40:27 +0400
commit78becc27097585c6aec7043834cadde950ae79f2 (patch)
tree3e8f0982faa2a456c1c68fa5e5a4c7c815194ae4 /kernel/sched/stop_task.c
parent1a55af2e45cce0ff13bc33c8ee99da84e188b615 (diff)
downloadlinux-78becc27097585c6aec7043834cadde950ae79f2.tar.xz
sched: Use an accessor to read the rq clock
Read the runqueue clock through an accessor. This prepares for adding a debugging infrastructure to detect missing or redundant calls to update_rq_clock() between a scheduler's entry and exit point. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Li Zhong <zhong@linux.vnet.ibm.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Paul Turner <pjt@google.com> Cc: Mike Galbraith <efault@gmx.de> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1365724262-20142-6-git-send-email-fweisbec@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched/stop_task.c')
-rw-r--r--kernel/sched/stop_task.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/kernel/sched/stop_task.c b/kernel/sched/stop_task.c
index da5eb5bed84a..e08fbeeb54b9 100644
--- a/kernel/sched/stop_task.c
+++ b/kernel/sched/stop_task.c
@@ -28,7 +28,7 @@ static struct task_struct *pick_next_task_stop(struct rq *rq)
struct task_struct *stop = rq->stop;
if (stop && stop->on_rq) {
- stop->se.exec_start = rq->clock_task;
+ stop->se.exec_start = rq_clock_task(rq);
return stop;
}
@@ -57,7 +57,7 @@ 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;
+ delta_exec = rq_clock_task(rq) - curr->se.exec_start;
if (unlikely((s64)delta_exec < 0))
delta_exec = 0;
@@ -67,7 +67,7 @@ static void put_prev_task_stop(struct rq *rq, struct task_struct *prev)
curr->se.sum_exec_runtime += delta_exec;
account_group_exec_runtime(curr, delta_exec);
- curr->se.exec_start = rq->clock_task;
+ curr->se.exec_start = rq_clock_task(rq);
cpuacct_charge(curr, delta_exec);
}
@@ -79,7 +79,7 @@ static void set_curr_task_stop(struct rq *rq)
{
struct task_struct *stop = rq->stop;
- stop->se.exec_start = rq->clock_task;
+ stop->se.exec_start = rq_clock_task(rq);
}
static void switched_to_stop(struct rq *rq, struct task_struct *p)