diff options
Diffstat (limited to 'meta-eas/recipes-kernel/linux/linux-renesas/0074-arm64-Define-Hi6220-SYS-sd-energy-model.patch')
| -rw-r--r-- | meta-eas/recipes-kernel/linux/linux-renesas/0074-arm64-Define-Hi6220-SYS-sd-energy-model.patch | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/meta-eas/recipes-kernel/linux/linux-renesas/0074-arm64-Define-Hi6220-SYS-sd-energy-model.patch b/meta-eas/recipes-kernel/linux/linux-renesas/0074-arm64-Define-Hi6220-SYS-sd-energy-model.patch new file mode 100644 index 0000000..1afbf14 --- /dev/null +++ b/meta-eas/recipes-kernel/linux/linux-renesas/0074-arm64-Define-Hi6220-SYS-sd-energy-model.patch @@ -0,0 +1,69 @@ +From 18204f2d5c286cde5c83e50c153ef678cb08ecf9 Mon Sep 17 00:00:00 2001 +From: Dietmar Eggemann <dietmar.eggemann@arm.com> +Date: Thu, 18 Aug 2016 14:27:09 +0100 +Subject: [PATCH 74/92] arm64: Define Hi6220 SYS sd energy model + +Hi6220 has a single frequency domain spanning the two clusters. It +needs the SYS sched domain (sd) to let the EAS algorithm work +properly. + +The SD_SHARE_CAP_STATES flag is not set on SYS sd. + +This lets sd_ea (highest sd w/ energy model data) point to the SYS +sd whereas sd_scs (highest sd w/ SD_SHARE_CAP_STATES set) points to +the DIE sd. This setup allows the code in sched_group_energy() to +set sg_shared_cap to the single sched group of the SYS sd covering +all the cpus in the system as they are all part of the single +frequency domain. + +The capacity and idle state vectors only contain entries w/ power +values equal zero, so there is no system-wide energy contribution. + +Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com> +(cherry picked from commit 364845656d93e1722081038e09c4781fa7cfb961) +Signed-off-by: Gaku Inami <gaku.inami.xw@bp.renesas.com> +--- + arch/arm64/kernel/energy_model.h | 20 +++++++++++++++++++- + 1 file changed, 19 insertions(+), 1 deletion(-) + +diff --git a/arch/arm64/kernel/energy_model.h b/arch/arm64/kernel/energy_model.h +index 4a86fa3..0a7c134 100644 +--- a/arch/arm64/kernel/energy_model.h ++++ b/arch/arm64/kernel/energy_model.h +@@ -109,6 +109,24 @@ + + /* HiKey */ + ++static struct idle_state idle_states_system_hikey[] = { ++ { .power = 0 }, /* arch_cpu_idle() (active idle) = WFI */ ++ { .power = 0 }, /* WFI */ ++ { .power = 0 }, /* cpu-sleep */ ++ { .power = 0 }, /* cluster-sleep */ ++}; ++ ++static struct capacity_state cap_states_system_hikey[] = { ++ { .cap = 1024, .power = 0, }, ++}; ++ ++static struct sched_group_energy energy_system_hikey = { ++ .nr_idle_states = ARRAY_SIZE(idle_states_system_hikey), ++ .idle_states = idle_states_system_hikey, ++ .nr_cap_states = ARRAY_SIZE(cap_states_system_hikey), ++ .cap_states = cap_states_system_hikey, ++}; ++ + static struct idle_state idle_states_cluster_hikey[] = { + { .power = 107 }, /* arch_cpu_idle() (active idle) = WFI */ + { .power = 107 }, /* WFI */ +@@ -173,7 +191,7 @@ struct energy_model { + static struct energy_model hikey_model = { + { &energy_core_hikey, &energy_core_hikey, }, + { &energy_cluster_hikey, &energy_cluster_hikey, }, +- {}, ++ { &energy_system_hikey, &energy_system_hikey, }, + }; + + static struct of_device_id model_matches[] = { +-- +1.9.1 + |