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sched_ext: Use update_curr_common() in update_curr_scx()

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update_curr_scx() is open coding runtime updates. Use update_curr_common()
instead and avoid unnecessary deviations.

Signed-off-by: Tejun Heo <tj@kernel.org>
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: David Vernet <void@manifault.com>
This commit is contained in:
Tejun Heo 2024-08-06 09:40:11 -10:00
parent cd01449268
commit 7799140b6a
1 changed files with 4 additions and 10 deletions
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14
kernel/sched/ext.c
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@ -1466,20 +1466,14 @@ static void touch_core_sched_dispatch(struct rq *rq, struct task_struct *p)
static void update_curr_scx(struct rq *rq)
{
struct task_struct *curr = rq->curr;
u64 now = rq_clock_task(rq);
u64 delta_exec;
s64 delta_exec;
if (time_before_eq64(now, curr->se.exec_start))
delta_exec = update_curr_common(rq);
if (unlikely(delta_exec <= 0))
return;
delta_exec = now - curr->se.exec_start;
curr->se.exec_start = now;
curr->se.sum_exec_runtime += delta_exec;
account_group_exec_runtime(curr, delta_exec);
cgroup_account_cputime(curr, delta_exec);
if (curr->scx.slice != SCX_SLICE_INF) {
curr->scx.slice -= min(curr->scx.slice, delta_exec);
curr->scx.slice -= min_t(u64, curr->scx.slice, delta_exec);
if (!curr->scx.slice)
touch_core_sched(rq, curr);
}