[RESEND][PATCH] power: energy_model: Rework the depends on for CONFIG_ENERGY_MODEL

From: Lukasz Luba
Date: Fri Mar 07 2025 - 08:27:46 EST


From: Jeson Gao <jeson.gao@xxxxxxxxxx>

Now not only CPUs can use energy efficiency models, but GPUs
can also use. On the other hand, even with only one CPU, we can also
use energy_model to align control in thermal.
So remove the dependence of SMP, and add the DEVFREQ.

Signed-off-by: Jeson Gao <jeson.gao@xxxxxxxxxx>
[Added missing SMP config option in DTPM_CPU dependency]
Signed-off-by: Lukasz Luba <lukasz.luba@xxxxxxx>
---

Hi Rafael,

This fixes the issue in the former patch with the DTMP_CPU
implicit build dependencies on SMP.
The original patch can be found here [1] (the one that you had to revert).

Regards,
Lukasz Luba

[1] https://lore.kernel.org/lkml/20241219091109.10050-1-xuewen.yan@xxxxxxxxxx/


drivers/powercap/Kconfig | 2 +-
kernel/power/Kconfig | 3 +--
2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/powercap/Kconfig b/drivers/powercap/Kconfig
index 69ef8d081c98b..03c4c796d9931 100644
--- a/drivers/powercap/Kconfig
+++ b/drivers/powercap/Kconfig
@@ -82,7 +82,7 @@ config DTPM

config DTPM_CPU
bool "Add CPU power capping based on the energy model"
- depends on DTPM && ENERGY_MODEL
+ depends on DTPM && ENERGY_MODEL && SMP
help
This enables support for CPU power limitation based on
energy model.
diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig
index ca947ed32e3dd..54a6236800194 100644
--- a/kernel/power/Kconfig
+++ b/kernel/power/Kconfig
@@ -380,8 +380,7 @@ config CPU_PM

config ENERGY_MODEL
bool "Energy Model for devices with DVFS (CPUs, GPUs, etc)"
- depends on SMP
- depends on CPU_FREQ
+ depends on CPU_FREQ || PM_DEVFREQ
help
Several subsystems (thermal and/or the task scheduler for example)
can leverage information about the energy consumed by devices to
--
2.48.1