Messages in this thread Patch in this message | | | From | Vincent Guittot <> | Subject | [PATCH 5/7 v2] sched/fair: reorder newidle_balance pulled_task tests | Date | Fri, 12 Feb 2021 14:28:47 +0100 |
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Reorder the tests and skip useless ones when no load balance has been performed and rq lock has not been released.
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org> --- kernel/sched/fair.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index ac4add026f32..5d285d93e433 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -10584,7 +10584,6 @@ static int newidle_balance(struct rq *this_rq, struct rq_flags *rf) if (curr_cost > this_rq->max_idle_balance_cost) this_rq->max_idle_balance_cost = curr_cost; -out: /* * While browsing the domains, we released the rq lock, a task could * have been enqueued in the meantime. Since we're not going idle, @@ -10593,14 +10592,15 @@ static int newidle_balance(struct rq *this_rq, struct rq_flags *rf) if (this_rq->cfs.h_nr_running && !pulled_task) pulled_task = 1; - /* Move the next balance forward */ - if (time_after(this_rq->next_balance, next_balance)) - this_rq->next_balance = next_balance; - /* Is there a task of a high priority class? */ if (this_rq->nr_running != this_rq->cfs.h_nr_running) pulled_task = -1; +out: + /* Move the next balance forward */ + if (time_after(this_rq->next_balance, next_balance)) + this_rq->next_balance = next_balance; + if (pulled_task) this_rq->idle_stamp = 0; else -- 2.17.1
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