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authorIngo Molnar <mingo@elte.hu>2007-08-09 11:16:47 +0200
committerIngo Molnar <mingo@elte.hu>2007-08-09 11:16:47 +0200
commitd281918d7c135c555d9cebcf73d4320efa8177dc (patch)
treee1230311df7cf4366438d49b2ad623a429c03d1c
parenteb59449400f1e5984509e502711141302a2867ab (diff)
sched: remove 'now' use from assignments
change all 'now' timestamp uses in assignments to rq->clock. ( this is an identity transformation that causes no functionality change: all such new rq->clock is necessarily preceded by an update_rq_clock() call. ) Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r--kernel/sched.c8
-rw-r--r--kernel/sched_fair.c19
-rw-r--r--kernel/sched_rt.c6
3 files changed, 17 insertions, 16 deletions
diff --git a/kernel/sched.c b/kernel/sched.c
index 65eb484dc26..49a5fb0cdea 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -788,8 +788,8 @@ static void update_curr_load(struct rq *rq, u64 now)
u64 start;
start = ls->load_update_start;
- ls->load_update_start = now;
- ls->delta_stat += now - start;
+ ls->load_update_start = rq->clock;
+ ls->delta_stat += rq->clock - start;
/*
* Stagger updates to ls->delta_fair. Very frequent updates
* can be expensive.
@@ -1979,8 +1979,8 @@ static void update_cpu_load(struct rq *this_rq)
exec_delta64 = ls->delta_exec + 1;
ls->delta_exec = 0;
- sample_interval64 = now - ls->load_update_last;
- ls->load_update_last = now;
+ sample_interval64 = this_rq->clock - ls->load_update_last;
+ ls->load_update_last = this_rq->clock;
if ((s64)sample_interval64 < (s64)TICK_NSEC)
sample_interval64 = TICK_NSEC;
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index bd20fad3def..bcf5fc59e8e 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -333,7 +333,7 @@ static void update_curr(struct cfs_rq *cfs_rq, u64 now)
* since the last time we changed load (this cannot
* overflow on 32 bits):
*/
- delta_exec = (unsigned long)(now - curr->exec_start);
+ delta_exec = (unsigned long)(rq_of(cfs_rq)->clock - curr->exec_start);
curr->delta_exec += delta_exec;
@@ -341,14 +341,14 @@ static void update_curr(struct cfs_rq *cfs_rq, u64 now)
__update_curr(cfs_rq, curr, now);
curr->delta_exec = 0;
}
- curr->exec_start = now;
+ curr->exec_start = rq_of(cfs_rq)->clock;
}
static inline void
update_stats_wait_start(struct cfs_rq *cfs_rq, struct sched_entity *se, u64 now)
{
se->wait_start_fair = cfs_rq->fair_clock;
- schedstat_set(se->wait_start, now);
+ schedstat_set(se->wait_start, rq_of(cfs_rq)->clock);
}
/*
@@ -421,7 +421,8 @@ __update_stats_wait_end(struct cfs_rq *cfs_rq, struct sched_entity *se, u64 now)
{
unsigned long delta_fair = se->delta_fair_run;
- schedstat_set(se->wait_max, max(se->wait_max, now - se->wait_start));
+ schedstat_set(se->wait_max, max(se->wait_max,
+ rq_of(cfs_rq)->clock - se->wait_start));
if (unlikely(se->load.weight != NICE_0_LOAD))
delta_fair = calc_weighted(delta_fair, se->load.weight,
@@ -470,7 +471,7 @@ update_stats_curr_start(struct cfs_rq *cfs_rq, struct sched_entity *se, u64 now)
/*
* We are starting a new run period:
*/
- se->exec_start = now;
+ se->exec_start = rq_of(cfs_rq)->clock;
}
/*
@@ -545,7 +546,7 @@ enqueue_sleeper(struct cfs_rq *cfs_rq, struct sched_entity *se, u64 now)
#ifdef CONFIG_SCHEDSTATS
if (se->sleep_start) {
- u64 delta = now - se->sleep_start;
+ u64 delta = rq_of(cfs_rq)->clock - se->sleep_start;
if ((s64)delta < 0)
delta = 0;
@@ -557,7 +558,7 @@ enqueue_sleeper(struct cfs_rq *cfs_rq, struct sched_entity *se, u64 now)
se->sum_sleep_runtime += delta;
}
if (se->block_start) {
- u64 delta = now - se->block_start;
+ u64 delta = rq_of(cfs_rq)->clock - se->block_start;
if ((s64)delta < 0)
delta = 0;
@@ -599,9 +600,9 @@ dequeue_entity(struct cfs_rq *cfs_rq, struct sched_entity *se,
struct task_struct *tsk = task_of(se);
if (tsk->state & TASK_INTERRUPTIBLE)
- se->sleep_start = now;
+ se->sleep_start = rq_of(cfs_rq)->clock;
if (tsk->state & TASK_UNINTERRUPTIBLE)
- se->block_start = now;
+ se->block_start = rq_of(cfs_rq)->clock;
}
cfs_rq->wait_runtime -= se->wait_runtime;
#endif
diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index 5b559e8c8aa..5fbd87ad0f5 100644
--- a/kernel/sched_rt.c
+++ b/kernel/sched_rt.c
@@ -15,14 +15,14 @@ static inline void update_curr_rt(struct rq *rq, u64 now)
if (!task_has_rt_policy(curr))
return;
- delta_exec = now - curr->se.exec_start;
+ delta_exec = rq->clock - curr->se.exec_start;
if (unlikely((s64)delta_exec < 0))
delta_exec = 0;
schedstat_set(curr->se.exec_max, max(curr->se.exec_max, delta_exec));
curr->se.sum_exec_runtime += delta_exec;
- curr->se.exec_start = now;
+ curr->se.exec_start = rq->clock;
}
static void
@@ -89,7 +89,7 @@ static struct task_struct *pick_next_task_rt(struct rq *rq, u64 now)
queue = array->queue + idx;
next = list_entry(queue->next, struct task_struct, run_list);
- next->se.exec_start = now;
+ next->se.exec_start = rq->clock;
return next;
}