[PATCH] sched: use task_current() instead of 'rq->curr == p'

From: Hui Su
Date: Fri Oct 30 2020 - 13:34:25 EST


We have supplied the macro: 'task_current()', and we should
all use task_current() instaed of 'rq->curr == p',
which is more readable.

No functional change.

Signed-off-by: Hui Su <sh_def@xxxxxxx>
---
kernel/sched/deadline.c | 2 +-
kernel/sched/debug.c | 2 +-
kernel/sched/fair.c | 6 +++---
kernel/sched/rt.c | 2 +-
4 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
index f232305dcefe..3b335be97952 100644
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -2474,7 +2474,7 @@ static void switched_to_dl(struct rq *rq, struct task_struct *p)
static void prio_changed_dl(struct rq *rq, struct task_struct *p,
int oldprio)
{
- if (task_on_rq_queued(p) || rq->curr == p) {
+ if (task_on_rq_queued(p) || task_current(rq, p)) {
#ifdef CONFIG_SMP
/*
* This might be too much, but unfortunately
diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c
index 0655524700d2..1ca554f10901 100644
--- a/kernel/sched/debug.c
+++ b/kernel/sched/debug.c
@@ -486,7 +486,7 @@ static char *task_group_path(struct task_group *tg)
static void
print_task(struct seq_file *m, struct rq *rq, struct task_struct *p)
{
- if (rq->curr == p)
+ if (task_current(rq, p))
SEQ_printf(m, ">R");
else
SEQ_printf(m, " %c", task_state_to_char(p));
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 290f9e38378c..c3e3ae76302e 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -5399,7 +5399,7 @@ static void hrtick_start_fair(struct rq *rq, struct task_struct *p)
s64 delta = slice - ran;

if (delta < 0) {
- if (rq->curr == p)
+ if (task_current(rq, p))
resched_curr(rq);
return;
}
@@ -10740,7 +10740,7 @@ prio_changed_fair(struct rq *rq, struct task_struct *p, int oldprio)
* our priority decreased, or if we are not currently running on
* this runqueue and our priority is higher than the current's
*/
- if (rq->curr == p) {
+ if (task_current(rq, p)) {
if (p->prio > oldprio)
resched_curr(rq);
} else
@@ -10873,7 +10873,7 @@ static void switched_to_fair(struct rq *rq, struct task_struct *p)
* kick off the schedule if running, otherwise just see
* if we can still preempt the current task.
*/
- if (rq->curr == p)
+ if (task_current(rq, p))
resched_curr(rq);
else
check_preempt_curr(rq, p, 0);
diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c
index 49ec096a8aa1..cd615aace14c 100644
--- a/kernel/sched/rt.c
+++ b/kernel/sched/rt.c
@@ -2317,7 +2317,7 @@ prio_changed_rt(struct rq *rq, struct task_struct *p, int oldprio)
if (!task_on_rq_queued(p))
return;

- if (rq->curr == p) {
+ if (task_current(rq, p)) {
#ifdef CONFIG_SMP
/*
* If our priority decreases while running, we
--
2.29.0