From: Quentin Perret <quentin.perret@arm.com>
To: peterz@infradead.org, rjw@rjwysocki.net,
linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org
Cc: gregkh@linuxfoundation.org, mingo@redhat.com,
dietmar.eggemann@arm.com, morten.rasmussen@arm.com,
chris.redpath@arm.com, patrick.bellasi@arm.com,
valentin.schneider@arm.com, vincent.guittot@linaro.org,
thara.gopinath@linaro.org, viresh.kumar@linaro.org,
tkjos@google.com, joel@joelfernandes.org, smuckle@google.com,
adharmap@quicinc.com, skannan@quicinc.com,
pkondeti@codeaurora.org, juri.lelli@redhat.com,
edubezval@gmail.com, srinivas.pandruvada@linux.intel.com,
currojerez@riseup.net, javi.merino@kernel.org,
quentin.perret@arm.com
Subject: [RFC PATCH v4 01/12] sched: Relocate arch_scale_cpu_capacity
Date: Thu, 28 Jun 2018 12:40:32 +0100 [thread overview]
Message-ID: <20180628114043.24724-2-quentin.perret@arm.com> (raw)
In-Reply-To: <20180628114043.24724-1-quentin.perret@arm.com>
By default, arch_scale_cpu_capacity() is only visible from within the
kernel/sched folder. Relocate it to include/linux/sched/topology.h to
make it visible to other clients needing to know about the capacity of
CPUs, such as the Energy Model framework.
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Quentin Perret <quentin.perret@arm.com>
---
include/linux/sched/topology.h | 19 +++++++++++++++++++
kernel/sched/sched.h | 18 ------------------
2 files changed, 19 insertions(+), 18 deletions(-)
diff --git a/include/linux/sched/topology.h b/include/linux/sched/topology.h
index 26347741ba50..1e24e88bee6d 100644
--- a/include/linux/sched/topology.h
+++ b/include/linux/sched/topology.h
@@ -202,6 +202,17 @@ extern void set_sched_topology(struct sched_domain_topology_level *tl);
# define SD_INIT_NAME(type)
#endif
+#ifndef arch_scale_cpu_capacity
+static __always_inline
+unsigned long arch_scale_cpu_capacity(struct sched_domain *sd, int cpu)
+{
+ if (sd && (sd->flags & SD_SHARE_CPUCAPACITY) && (sd->span_weight > 1))
+ return sd->smt_gain / sd->span_weight;
+
+ return SCHED_CAPACITY_SCALE;
+}
+#endif
+
#else /* CONFIG_SMP */
struct sched_domain_attr;
@@ -217,6 +228,14 @@ static inline bool cpus_share_cache(int this_cpu, int that_cpu)
return true;
}
+#ifndef arch_scale_cpu_capacity
+static __always_inline
+unsigned long arch_scale_cpu_capacity(void __always_unused *sd, int cpu)
+{
+ return SCHED_CAPACITY_SCALE;
+}
+#endif
+
#endif /* !CONFIG_SMP */
static inline int task_node(const struct task_struct *p)
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 67702b4d9ac7..34549bca487d 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -1730,30 +1730,12 @@ unsigned long arch_scale_freq_capacity(int cpu)
#ifdef CONFIG_SMP
extern void sched_avg_update(struct rq *rq);
-#ifndef arch_scale_cpu_capacity
-static __always_inline
-unsigned long arch_scale_cpu_capacity(struct sched_domain *sd, int cpu)
-{
- if (sd && (sd->flags & SD_SHARE_CPUCAPACITY) && (sd->span_weight > 1))
- return sd->smt_gain / sd->span_weight;
-
- return SCHED_CAPACITY_SCALE;
-}
-#endif
-
static inline void sched_rt_avg_update(struct rq *rq, u64 rt_delta)
{
rq->rt_avg += rt_delta * arch_scale_freq_capacity(cpu_of(rq));
sched_avg_update(rq);
}
#else
-#ifndef arch_scale_cpu_capacity
-static __always_inline
-unsigned long arch_scale_cpu_capacity(void __always_unused *sd, int cpu)
-{
- return SCHED_CAPACITY_SCALE;
-}
-#endif
static inline void sched_rt_avg_update(struct rq *rq, u64 rt_delta) { }
static inline void sched_avg_update(struct rq *rq) { }
#endif
--
2.17.1
next prev parent reply other threads:[~2018-06-28 11:41 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-28 11:40 [RFC PATCH v4 00/12] Energy Aware Scheduling Quentin Perret
2018-06-28 11:40 ` Quentin Perret [this message]
2018-06-28 11:40 ` [RFC PATCH v4 02/12] sched/cpufreq: Factor out utilization to frequency mapping Quentin Perret
2018-06-28 11:40 ` [RFC PATCH v4 03/12] PM: Introduce an Energy Model management framework Quentin Perret
2018-07-05 14:31 ` Peter Zijlstra
2018-07-05 15:24 ` Quentin Perret
2018-07-05 14:39 ` Peter Zijlstra
2018-07-05 15:09 ` Quentin Perret
2018-07-05 15:06 ` Peter Zijlstra
2018-07-05 15:32 ` Quentin Perret
2018-07-06 9:57 ` Vincent Guittot
2018-07-06 10:03 ` Peter Zijlstra
2018-07-06 10:06 ` Quentin Perret
2018-07-06 10:05 ` Quentin Perret
2018-07-09 18:07 ` Dietmar Eggemann
2018-07-10 8:32 ` Quentin Perret
2018-07-16 10:29 ` Quentin Perret
2018-07-17 8:57 ` Dietmar Eggemann
2018-07-17 14:19 ` Quentin Perret
2018-07-17 16:00 ` Dietmar Eggemann
2018-06-28 11:40 ` [RFC PATCH v4 04/12] PM / EM: Expose the Energy Model in sysfs Quentin Perret
2018-06-28 11:40 ` [RFC PATCH v4 05/12] sched/topology: Reference the Energy Model of CPUs when available Quentin Perret
2018-07-05 17:29 ` Peter Zijlstra
2018-07-05 17:48 ` Quentin Perret
2018-07-05 17:33 ` Peter Zijlstra
2018-07-05 17:50 ` Quentin Perret
2018-07-05 18:14 ` Peter Zijlstra
2018-06-28 11:40 ` [RFC PATCH v4 06/12] sched/topology: Lowest energy aware balancing sched_domain level pointer Quentin Perret
2018-06-28 11:40 ` [RFC PATCH v4 07/12] sched/topology: Introduce sched_energy_present static key Quentin Perret
2018-06-28 11:40 ` [RFC PATCH v4 08/12] sched: Add over-utilization/tipping point indicator Quentin Perret
2018-07-06 11:32 ` Peter Zijlstra
2018-07-06 13:20 ` Quentin Perret
2018-07-06 13:24 ` Peter Zijlstra
2018-07-06 13:40 ` Quentin Perret
2018-07-06 11:39 ` Peter Zijlstra
2018-07-06 11:41 ` Peter Zijlstra
2018-07-06 11:49 ` Valentin Schneider
2018-06-28 11:40 ` [RFC PATCH v4 09/12] sched/fair: Introduce an energy estimation helper function Quentin Perret
2018-07-06 13:12 ` Peter Zijlstra
2018-07-06 15:12 ` Quentin Perret
2018-07-06 15:49 ` Peter Zijlstra
2018-07-06 17:04 ` Quentin Perret
2018-07-09 12:01 ` Peter Zijlstra
2018-07-09 15:28 ` Quentin Perret
2018-07-09 15:42 ` Peter Zijlstra
2018-07-09 16:07 ` Quentin Perret
2018-07-06 15:50 ` Peter Zijlstra
2018-06-28 11:40 ` [RFC PATCH v4 10/12] sched/fair: Select an energy-efficient CPU on task wake-up Quentin Perret
2018-06-28 11:40 ` [RFC PATCH v4 11/12] OPTIONAL: arch_topology: Start Energy Aware Scheduling Quentin Perret
2018-06-28 11:40 ` [RFC PATCH v4 12/12] OPTIONAL: cpufreq: dt: Register an Energy Model Quentin Perret
2018-07-06 10:10 ` Vincent Guittot
2018-07-06 10:18 ` Quentin Perret
2018-07-30 15:53 ` Vincent Guittot
2018-07-30 16:20 ` Quentin Perret
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