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| author |   Pierre Gondois <Pierre.Gondois@arm.com> | 2022-03-21 09:57:23 +0000 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2022-04-13 16:26:17 +0200 |
| commit | fc3a9a9858478ab5f8441765a3f9552a0ceba10c (patch) | |
| tree | 4a85b97562b6d43775f86b7d2892e403d091ce83 /include/linux/energy_model.h | |
| parent | PM: EM: Add .get_cost() callback (diff) | |
| download | wireguard-linux-fc3a9a9858478ab5f8441765a3f9552a0ceba10c.tar.xz wireguard-linux-fc3a9a9858478ab5f8441765a3f9552a0ceba10c.zip | |
PM: EM: Add artificial EM flag
The Energy Model (EM) can be used on platforms which are missing real
power information. Those platforms would implement .get_cost() which
populates needed values for the Energy Aware Scheduler (EAS). The EAS
doesn't use 'power' fields from EM, but other frameworks might use them.
Thus, to avoid miss-usage of this specific type of EM, introduce a new
flags which can be checked by other frameworks.
Signed-off-by: Pierre Gondois <Pierre.Gondois@arm.com>
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
Reviewed-by: Ionela Voinescu <ionela.voinescu@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux/energy_model.h')
| -rw-r--r-- | include/linux/energy_model.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/energy_model.h b/include/linux/energy_model.h index 0a3a5663177b..92e82a322859 100644 --- a/include/linux/energy_model.h +++ b/include/linux/energy_model.h @@ -67,11 +67,16 @@ struct em_perf_domain { * * EM_PERF_DOMAIN_SKIP_INEFFICIENCIES: Skip inefficient states when estimating * energy consumption. + * + * EM_PERF_DOMAIN_ARTIFICIAL: The power values are artificial and might be + * created by platform missing real power information */ #define EM_PERF_DOMAIN_MILLIWATTS BIT(0) #define EM_PERF_DOMAIN_SKIP_INEFFICIENCIES BIT(1) +#define EM_PERF_DOMAIN_ARTIFICIAL BIT(2) #define em_span_cpus(em) (to_cpumask((em)->cpus)) +#define em_is_artificial(em) ((em)->flags & EM_PERF_DOMAIN_ARTIFICIAL) #ifdef CONFIG_ENERGY_MODEL #define EM_MAX_POWER 0xFFFF |