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sched: Add task_struct pointer to sched_class::set_curr_task

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In preparation of further separating pick_next_task() and
set_curr_task() we have to pass the actual task into it, while there,
rename the thing to better pair with put_prev_task().

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Aaron Lu <aaron.lwe@gmail.com>
Cc: Valentin Schneider <valentin.schneider@arm.com>
Cc: mingo@kernel.org
Cc: Phil Auld <pauld@redhat.com>
Cc: Julien Desfossez <jdesfossez@digitalocean.com>
Cc: Nishanth Aravamudan <naravamudan@digitalocean.com>
Link: https://lkml.kernel.org/r/a96d1bcdd716db4a4c5da2fece647a1456c0ed78.1559129225.git.vpillai@digitalocean.com
This commit is contained in:
Peter Zijlstra
2019-05-29 20:36:41 +00:00
parent 10e7071b2f
commit 03b7fad167
7 changed files with 49 additions and 47 deletions
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7
kernel/sched/sched.h
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@@ -1707,6 +1707,7 @@ struct sched_class {
struct task_struct *prev,
struct rq_flags *rf);
void (*put_prev_task)(struct rq *rq, struct task_struct *p);
void (*set_next_task)(struct rq *rq, struct task_struct *p);
#ifdef CONFIG_SMP
int (*select_task_rq)(struct task_struct *p, int task_cpu, int sd_flag, int flags);
@@ -1721,7 +1722,6 @@ struct sched_class {
void (*rq_offline)(struct rq *rq);
#endif
void (*set_curr_task)(struct rq *rq);
void (*task_tick)(struct rq *rq, struct task_struct *p, int queued);
void (*task_fork)(struct task_struct *p);
void (*task_dead)(struct task_struct *p);
@@ -1755,9 +1755,10 @@ static inline void put_prev_task(struct rq *rq, struct task_struct *prev)
prev->sched_class->put_prev_task(rq, prev);
}
static inline void set_curr_task(struct rq *rq, struct task_struct *curr)
static inline void set_next_task(struct rq *rq, struct task_struct *next)
{
curr->sched_class->set_curr_task(rq);
WARN_ON_ONCE(rq->curr != next);
next->sched_class->set_next_task(rq, next);
}
#ifdef CONFIG_SMP