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| author | Peter Zijlstra <peterz@infradead.org> | 2023-11-04 11:59:18 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2023-11-15 09:57:48 +0100 |
| commit | 5d69eca542ee17c618f9a55da52191d5e28b435f (patch) | |
| tree | ada1a9eabd52e3b77f3cc5c56ca60c038404b481 /kernel/sched/deadline.c | |
| parent | sched/eevdf: O(1) fastpath for task selection (diff) | |
| download | linux-5d69eca542ee17c618f9a55da52191d5e28b435f.tar.xz linux-5d69eca542ee17c618f9a55da52191d5e28b435f.zip | |
sched: Unify runtime accounting across classes
All classes use sched_entity::exec_start to track runtime and have
copies of the exact same code around to compute runtime.
Collapse all that.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Phil Auld <pauld@redhat.com>
Reviewed-by: Valentin Schneider <vschneid@redhat.com>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Link: https://lkml.kernel.org/r/54d148a144f26d9559698c4dd82d8859038a7380.1699095159.git.bristot@kernel.org
Diffstat (limited to 'kernel/sched/deadline.c')
| -rw-r--r-- | kernel/sched/deadline.c | 15 |
1 files changed, 3 insertions, 12 deletions
diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c index b28114478b82..de79719c63c0 100644 --- a/kernel/sched/deadline.c +++ b/kernel/sched/deadline.c @@ -1275,9 +1275,8 @@ static void update_curr_dl(struct rq *rq) { struct task_struct *curr = rq->curr; struct sched_dl_entity *dl_se = &curr->dl; - u64 delta_exec, scaled_delta_exec; + s64 delta_exec, scaled_delta_exec; int cpu = cpu_of(rq); - u64 now; if (!dl_task(curr) || !on_dl_rq(dl_se)) return; @@ -1290,21 +1289,13 @@ static void update_curr_dl(struct rq *rq) * natural solution, but the full ramifications of this * approach need further study. */ - now = rq_clock_task(rq); - delta_exec = now - curr->se.exec_start; - if (unlikely((s64)delta_exec <= 0)) { + delta_exec = update_curr_common(rq); + if (unlikely(delta_exec <= 0)) { if (unlikely(dl_se->dl_yielded)) goto throttle; return; } - schedstat_set(curr->stats.exec_max, - max(curr->stats.exec_max, delta_exec)); - - trace_sched_stat_runtime(curr, delta_exec, 0); - - update_current_exec_runtime(curr, now, delta_exec); - if (dl_entity_is_special(dl_se)) return; |