| Message ID | 1415033687-23294-3-git-send-email-vincent.guittot@linaro.org |
|---|---|
| State | New |
| Headers | show |
s/usage/utilization/ in subject. On Mon, Nov 03, 2014 at 04:54:39PM +0000, Vincent Guittot wrote: > From: Morten Rasmussen <morten.rasmussen@arm.com> > > Adds usage contribution tracking for group entities. Unlike s/usage contribution/utilization/ > se->avg.load_avg_contrib, se->avg.utilization_avg_contrib for group > entities is the sum of se->avg.utilization_avg_contrib for all entities on the > group runqueue. It is _not_ influenced in any way by the task group > h_load. Hence it is representing the actual cpu usage of the group, not s/usage/utilization/ > its intended load contribution which may differ significantly from the > utilization on lightly utilized systems. > > cc: Paul Turner <pjt@google.com> > cc: Ben Segall <bsegall@google.com> > > Signed-off-by: Morten Rasmussen <morten.rasmussen@arm.com> > Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org> > --- > kernel/sched/debug.c | 2 ++ > kernel/sched/fair.c | 3 +++ > 2 files changed, 5 insertions(+) > > diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c > index f384452..efb47ed 100644 > --- a/kernel/sched/debug.c > +++ b/kernel/sched/debug.c > @@ -94,8 +94,10 @@ static void print_cfs_group_stats(struct seq_file *m, int cpu, struct task_group > P(se->load.weight); > #ifdef CONFIG_SMP > P(se->avg.runnable_avg_sum); > + P(se->avg.running_avg_sum); > P(se->avg.avg_period); > P(se->avg.load_avg_contrib); > + P(se->avg.utilization_avg_contrib); > P(se->avg.decay_count); > #endif > #undef PN > diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c > index 3a91ae6..a171e1b 100644 > --- a/kernel/sched/fair.c > +++ b/kernel/sched/fair.c > @@ -2529,6 +2529,9 @@ static long __update_entity_utilization_avg_contrib(struct sched_entity *se) > > if (entity_is_task(se)) > __update_task_entity_utilization(se); > + else > + se->avg.utilization_avg_contrib = > + group_cfs_rq(se)->utilization_load_avg; > > return se->avg.utilization_avg_contrib - old_contrib; > } What happened to the update of se->avg.utilization_avg_contrib in __synchronize_entity_decay()? It seems to have disapperead after v7. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
On 21 November 2014 at 13:35, Morten Rasmussen <morten.rasmussen@arm.com> wrote: > s/usage/utilization/ in subject. > > On Mon, Nov 03, 2014 at 04:54:39PM +0000, Vincent Guittot wrote: >> From: Morten Rasmussen <morten.rasmussen@arm.com> >> >> Adds usage contribution tracking for group entities. Unlike > > s/usage contribution/utilization/ > >> se->avg.load_avg_contrib, se->avg.utilization_avg_contrib for group >> entities is the sum of se->avg.utilization_avg_contrib for all entities on the >> group runqueue. It is _not_ influenced in any way by the task group >> h_load. Hence it is representing the actual cpu usage of the group, not > > s/usage/utilization/ > >> its intended load contribution which may differ significantly from the >> utilization on lightly utilized systems. >> >> cc: Paul Turner <pjt@google.com> >> cc: Ben Segall <bsegall@google.com> >> >> Signed-off-by: Morten Rasmussen <morten.rasmussen@arm.com> >> Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org> >> --- >> kernel/sched/debug.c | 2 ++ >> kernel/sched/fair.c | 3 +++ >> 2 files changed, 5 insertions(+) >> >> diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c >> index f384452..efb47ed 100644 >> --- a/kernel/sched/debug.c >> +++ b/kernel/sched/debug.c >> @@ -94,8 +94,10 @@ static void print_cfs_group_stats(struct seq_file *m, int cpu, struct task_group >> P(se->load.weight); >> #ifdef CONFIG_SMP >> P(se->avg.runnable_avg_sum); >> + P(se->avg.running_avg_sum); >> P(se->avg.avg_period); >> P(se->avg.load_avg_contrib); >> + P(se->avg.utilization_avg_contrib); >> P(se->avg.decay_count); >> #endif >> #undef PN >> diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c >> index 3a91ae6..a171e1b 100644 >> --- a/kernel/sched/fair.c >> +++ b/kernel/sched/fair.c >> @@ -2529,6 +2529,9 @@ static long __update_entity_utilization_avg_contrib(struct sched_entity *se) >> >> if (entity_is_task(se)) >> __update_task_entity_utilization(se); >> + else >> + se->avg.utilization_avg_contrib = >> + group_cfs_rq(se)->utilization_load_avg; >> >> return se->avg.utilization_avg_contrib - old_contrib; >> } > > What happened to the update of se->avg.utilization_avg_contrib in > __synchronize_entity_decay()? It seems to have disapperead after v7. It was moved in patch 1 where it is is right place -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c index f384452..efb47ed 100644 --- a/kernel/sched/debug.c +++ b/kernel/sched/debug.c @@ -94,8 +94,10 @@ static void print_cfs_group_stats(struct seq_file *m, int cpu, struct task_group P(se->load.weight); #ifdef CONFIG_SMP P(se->avg.runnable_avg_sum); + P(se->avg.running_avg_sum); P(se->avg.avg_period); P(se->avg.load_avg_contrib); + P(se->avg.utilization_avg_contrib); P(se->avg.decay_count); #endif #undef PN diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 3a91ae6..a171e1b 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -2529,6 +2529,9 @@ static long __update_entity_utilization_avg_contrib(struct sched_entity *se) if (entity_is_task(se)) __update_task_entity_utilization(se); + else + se->avg.utilization_avg_contrib = + group_cfs_rq(se)->utilization_load_avg; return se->avg.utilization_avg_contrib - old_contrib; }