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sched: Add update_current_exec_runtime helper 

Wrap repeated code in helper function update_current_exec_runtime for
update the exec time of the current.

Signed-off-by: Shang XiaoJing <shangxiaojing@huawei.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20220824082856.15674-1-shangxiaojing@huawei.com
This commit is contained in:
Shang XiaoJing 2022-08-24 16:28:56 +08:00 committed by Peter Zijlstra
parent e4fe074d6c
commit 5531ecffa4
4 changed files with 16 additions and 17 deletions
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6
kernel/sched/deadline.c
View File

@ -1333,11 +1333,7 @@ static void update_curr_dl(struct rq *rq)
trace_sched_stat_runtime(curr, delta_exec, 0);
curr->se.sum_exec_runtime += delta_exec;
account_group_exec_runtime(curr, delta_exec);
curr->se.exec_start = now;
cgroup_account_cputime(curr, delta_exec);
update_current_exec_runtime(curr, now, delta_exec);
if (dl_entity_is_special(dl_se))
return;

6
kernel/sched/rt.c
View File

@ -1062,11 +1062,7 @@ static void update_curr_rt(struct rq *rq)
trace_sched_stat_runtime(curr, delta_exec, 0);
curr->se.sum_exec_runtime += delta_exec;
account_group_exec_runtime(curr, delta_exec);
curr->se.exec_start = now;
cgroup_account_cputime(curr, delta_exec);
update_current_exec_runtime(curr, now, delta_exec);
if (!rt_bandwidth_enabled())
return;

10
kernel/sched/sched.h
View File

@ -3158,4 +3158,14 @@ extern int sched_dynamic_mode(const char *str);
extern void sched_dynamic_update(int mode);
#endif
static inline void update_current_exec_runtime(struct task_struct *curr,
u64 now, u64 delta_exec)
{
curr->se.sum_exec_runtime += delta_exec;
account_group_exec_runtime(curr, delta_exec);
curr->se.exec_start = now;
cgroup_account_cputime(curr, delta_exec);
}
#endif /* _KERNEL_SCHED_SCHED_H */

11
kernel/sched/stop_task.c
View File

@ -71,20 +71,17 @@ 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;
u64 now, delta_exec;
delta_exec = rq_clock_task(rq) - curr->se.exec_start;
now = rq_clock_task(rq);
delta_exec = now - curr->se.exec_start;
if (unlikely((s64)delta_exec < 0))
delta_exec = 0;
schedstat_set(curr->stats.exec_max,
max(curr->stats.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(rq);
cgroup_account_cputime(curr, delta_exec);
update_current_exec_runtime(curr, now, delta_exec);
}
/*