diff options
| author | Thara Gopinath <thara.gopinath@linaro.org> | 2020-02-21 19:52:10 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2020-03-06 12:57:20 +0100 |
| commit | b4eccf5f8e1dcade112d97be86ad455a94501a0f (patch) | |
| tree | b3d3be643d35958da735a2d75990da295ac277f5 | |
| parent | 8eab879c5463d1a16a314790764c4c9d6c74c64c (diff) | |
sched/fair: Enable periodic update of average thermal pressure
Introduce support in scheduler periodic tick and other CFS 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>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lkml.kernel.org/r/20200222005213.3873-7-thara.gopinath@linaro.org
| -rw-r--r-- | kernel/sched/core.c | 3 | ||||
| -rw-r--r-- | kernel/sched/fair.c | 7 |
2 files changed, 10 insertions, 0 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 8e6f38073ab3..3e620fe8e3a0 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -3586,6 +3586,7 @@ void scheduler_tick(void) struct rq *rq = cpu_rq(cpu); struct task_struct *curr = rq->curr; struct rq_flags rf; + unsigned long thermal_pressure; arch_scale_freq_tick(); sched_clock_tick(); @@ -3593,6 +3594,8 @@ void scheduler_tick(void) rq_lock(rq, &rf); update_rq_clock(rq); + thermal_pressure = arch_scale_thermal_pressure(cpu_of(rq)); + update_thermal_load_avg(rq_clock_task(rq), rq, thermal_pressure); curr->sched_class->task_tick(rq, curr, 0); calc_global_load_tick(rq); psi_task_tick(rq); diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 4b5d5e5e701e..11f8488f83d7 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -7719,6 +7719,9 @@ static inline bool others_have_blocked(struct rq *rq) if (READ_ONCE(rq->avg_dl.util_avg)) return true; + if (thermal_load_avg(rq)) + return true; + #ifdef CONFIG_HAVE_SCHED_AVG_IRQ if (READ_ONCE(rq->avg_irq.util_avg)) return true; @@ -7744,6 +7747,7 @@ 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; bool decayed; /* @@ -7752,8 +7756,11 @@ static bool __update_blocked_others(struct rq *rq, bool *done) */ curr_class = rq->curr->sched_class; + thermal_pressure = arch_scale_thermal_pressure(cpu_of(rq)); + 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)) |