Messages in this thread Patch in this message |  | | From | Thara Gopinath <> | Subject | [Patch v6 4/7] sched/fair: Enable periodic update of average thermal pressure | Date | Wed, 11 Dec 2019 23:11:45 -0500 |
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Introduce support in CFS periodic tick and other bookkeeping apis to trigger the process of computing average thermal pressure for a cpu. Also consider avg_thermal.load_avg in others_have_blocked which allows for decay of pelt signals.
Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org> --- kernel/sched/fair.c | 8 ++++++++ 1 file changed, 8 insertions(+)
v4->v5: - Updated both versions of update_blocked_averages to trigger the process of computing average thermal pressure. - Updated others_have_blocked to considerd avg_thermal.load_avg.
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 08a233e..e12a375 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -7462,6 +7462,9 @@ static inline bool others_have_blocked(struct rq *rq) if (READ_ONCE(rq->avg_dl.util_avg)) return true; + if (READ_ONCE(rq->avg_thermal.load_avg)) + return true; + #ifdef CONFIG_HAVE_SCHED_AVG_IRQ if (READ_ONCE(rq->avg_irq.util_avg)) return true; @@ -7487,6 +7490,7 @@ static bool __update_blocked_others(struct rq *rq, bool *done) { const struct sched_class *curr_class; u64 now = rq_clock_pelt(rq); + unsigned long thermal_pressure = arch_scale_thermal_capacity(cpu_of(rq)); bool decayed; /* @@ -7497,6 +7501,8 @@ static bool __update_blocked_others(struct rq *rq, bool *done) decayed = update_rt_rq_load_avg(now, rq, curr_class == &rt_sched_class) | update_dl_rq_load_avg(now, rq, curr_class == &dl_sched_class) | + update_thermal_load_avg(rq_clock_task(rq), rq, + thermal_pressure) | update_irq_load_avg(rq, 0); if (others_have_blocked(rq)) @@ -10263,6 +10269,7 @@ static void task_tick_fair(struct rq *rq, struct task_struct *curr, int queued) { struct cfs_rq *cfs_rq; struct sched_entity *se = &curr->se; + unsigned long thermal_pressure = arch_scale_thermal_capacity(cpu_of(rq)); for_each_sched_entity(se) { cfs_rq = cfs_rq_of(se); @@ -10274,6 +10281,7 @@ static void task_tick_fair(struct rq *rq, struct task_struct *curr, int queued) update_misfit_status(curr, rq); update_overutilized_status(task_rq(curr)); + update_thermal_load_avg(rq_clock_task(rq), rq, thermal_pressure); } /* -- 2.1.4
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