diff options
Diffstat (limited to 'meta-eas/recipes-kernel/linux/linux-renesas/0073-arm64-Introduce-sys-sd-energy-model-infrastructure.patch')
| -rw-r--r-- | meta-eas/recipes-kernel/linux/linux-renesas/0073-arm64-Introduce-sys-sd-energy-model-infrastructure.patch | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/meta-eas/recipes-kernel/linux/linux-renesas/0073-arm64-Introduce-sys-sd-energy-model-infrastructure.patch b/meta-eas/recipes-kernel/linux/linux-renesas/0073-arm64-Introduce-sys-sd-energy-model-infrastructure.patch new file mode 100644 index 0000000..700ecc0 --- /dev/null +++ b/meta-eas/recipes-kernel/linux/linux-renesas/0073-arm64-Introduce-sys-sd-energy-model-infrastructure.patch @@ -0,0 +1,126 @@ +From dabca795d8793a16cbbce37b0cc187d2a65cd50e Mon Sep 17 00:00:00 2001 +From: Dietmar Eggemann <dietmar.eggemann@arm.com> +Date: Thu, 18 Aug 2016 12:06:07 +0100 +Subject: [PATCH 73/92] arm64: Introduce sys sd energy model infrastructure + +Allow the energy model to contain a system level besides the already +existing core and cluster level. + +This is necessary for platforms with frequency domains spanning all +cpus to let the EAS algorithm work properly. + +The whole idea of this system level has to be rethought once +the idea of the 'struct sched_domain_shared' gets more momentum: + +https://lkml.org/lkml/2016/6/16/209 + +Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com> +(cherry picked from commit 83a776c78d6e2885f2821a35c78e465c60726244) +Signed-off-by: Gaku Inami <gaku.inami.xw@bp.renesas.com> +--- + arch/arm64/kernel/energy_model.h | 28 ++++++++++++++++++++-------- + arch/arm64/kernel/topology.c | 1 + + 2 files changed, 21 insertions(+), 8 deletions(-) + +diff --git a/arch/arm64/kernel/energy_model.h b/arch/arm64/kernel/energy_model.h +index a71c78d..4a86fa3 100644 +--- a/arch/arm64/kernel/energy_model.h ++++ b/arch/arm64/kernel/energy_model.h +@@ -153,24 +153,27 @@ + .cap_states = cap_states_core_hikey, + }; + +-/* An energy model contains core and cluster sched group energy for 2 +- * clusters (cluster id 0 and 1). set_energy_model() relies on this +- * feature. It is enforced by a BUG_ON in energy(). ++/* An energy model contains core, cluster and system sched group energy ++ * for 2 clusters (cluster id 0 and 1). set_energy_model() relies on ++ * this feature. It is enforced by a BUG_ON in energy(). + */ + + struct energy_model { + struct sched_group_energy *core_energy[2]; + struct sched_group_energy *cluster_energy[2]; ++ struct sched_group_energy *system_energy[2]; + }; + + static struct energy_model juno_model = { + { &energy_core_juno_a57, &energy_core_juno_a53, }, + { &energy_cluster_juno_a57, &energy_cluster_juno_a53, }, ++ {}, + }; + + static struct energy_model hikey_model = { + { &energy_core_hikey, &energy_core_hikey, }, + { &energy_cluster_hikey, &energy_cluster_hikey, }, ++ {}, + }; + + static struct of_device_id model_matches[] = { +@@ -179,14 +182,14 @@ struct energy_model { + {}, + }; + +-static struct sched_group_energy **core_energy, **cluster_energy; ++struct sched_group_energy **core_energy, **cluster_energy, **system_energy; + + static void __init set_energy_model(void) + { + const struct of_device_id *match; + struct energy_model *em; + +- BUG_ON(core_energy || cluster_energy); ++ BUG_ON(core_energy || cluster_energy || system_energy); + + match = of_match_node(model_matches, of_root); + +@@ -197,10 +200,12 @@ static void __init set_energy_model(void) + + core_energy = em->core_energy; + cluster_energy = em->cluster_energy; ++ system_energy = em->system_energy; + +- pr_debug("energy model core[0,1]=[%p,%p] cluster=[%p,%p]\n", ++ pr_debug("energy model core[0,1]=[%p,%p] cluster=[%p,%p] system=[%p,%p]\n", + em->core_energy[0], em->core_energy[1], +- em->cluster_energy[0], em->cluster_energy[1]); ++ em->cluster_energy[0], em->cluster_energy[1], ++ em->system_energy[0], em->system_energy[1]); + } + + static inline +@@ -211,7 +216,8 @@ struct sched_group_energy *energy(int cpu, struct sched_group_energy **sge) + BUG_ON(idx != 0 && idx != 1); + + pr_debug("cpu=%d %s%s[%d]=%p\n", cpu, (sge == core_energy) ? +- "core" : "cluster", "_energy", idx, sge[idx]); ++ "core" : (sge == cluster_energy) ? "cluster" : ++ "system", "_energy", idx, sge[idx]); + + return sge[idx]; + } +@@ -227,3 +233,9 @@ const struct sched_group_energy * const cpu_cluster_energy(int cpu) + { + return cluster_energy ? energy(cpu, cluster_energy) : NULL; + } ++ ++static inline ++const struct sched_group_energy * const cpu_system_energy(int cpu) ++{ ++ return system_energy ? energy(cpu, system_energy) : NULL; ++} +diff --git a/arch/arm64/kernel/topology.c b/arch/arm64/kernel/topology.c +index baaab53..4062786 100644 +--- a/arch/arm64/kernel/topology.c ++++ b/arch/arm64/kernel/topology.c +@@ -669,6 +669,7 @@ static void __init reset_cpu_topology(void) + { cpu_coregroup_mask, cpu_coregroup_flags, cpu_core_energy, SD_INIT_NAME(MC) }, + #endif + { cpu_cpu_mask, cpu_cpu_flags, cpu_cluster_energy, SD_INIT_NAME(DIE) }, ++ { cpu_cpu_mask, NULL, cpu_system_energy, SD_INIT_NAME(SYS) }, + { NULL, } + }; + +-- +1.9.1 + |