lib: move cpu_load into lib/os

Move cpu_load to lib/os, as this functionality on its own does not justify being a subsystem on its own. Fixes #95498 Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2025-10-18 06:53:28 -04:00
parent 70951ee985
commit 24e094ef5e
12 changed files with 7 additions and 9 deletions
--- a/MAINTAINERS.yml
+++ b/MAINTAINERS.yml
@@ -855,8 +855,6 @@ CPU Frequency Scaling:
    - seankyer
  files:
    - include/zephyr/cpu_freq/
-    - include/zephyr/cpu_load/
-    - subsys/cpu_load/
    - subsys/cpu_freq/
    - dts/bindings/p_state/
  labels:
--- a/doc/services/cpu_freq/policies/on_demand.rst
+++ b/doc/services/cpu_freq/policies/on_demand.rst
@@ -4,7 +4,7 @@ On-Demand CPU Frequency Scaling Policy
 ######################################

 The On-Demand policy evaluates the current CPU load using the
-:ref:`CPU Load subsystem <cpu_load_subsys>`, and compares it to the trigger threshold defined by the
+:ref:`CPU Load metric <cpu_load_metric>`, and compares it to the trigger threshold defined by the
 SoC P-state definition.

 The On-Demand policy will iterate through the defined P-states and select the first P-state of which
--- a/doc/services/cpu_load/index.rst
+++ b/doc/services/cpu_load/index.rst
@@ -1,4 +1,4 @@
-.. _cpu_load_subsys:
+.. _cpu_load_metric:

 CPU Load
 ########
--- a/include/zephyr/cpu_load/cpu_load.h
+++ b/include/zephyr/cpu_load/cpu_load.h
--- a/lib/os/CMakeLists.txt
+++ b/lib/os/CMakeLists.txt
@@ -50,6 +50,7 @@ zephyr_syscall_header_ifdef(CONFIG_FDTABLE

 zephyr_sources_ifdef(CONFIG_CBPRINTF_COMPLETE cbprintf_complete.c)
 zephyr_sources_ifdef(CONFIG_CBPRINTF_NANO cbprintf_nano.c)
+add_subdirectory_ifdef(CONFIG_CPU_LOAD_METRIC cpu_load)

 if(NOT CONFIG_PICOLIBC)
  zephyr_sources(cbprintf.c)
--- a/lib/os/Kconfig
+++ b/lib/os/Kconfig
@@ -151,5 +151,6 @@ config POWEROFF

 rsource "Kconfig.cbprintf"
 rsource "zvfs/Kconfig"
+rsource "cpu_load/Kconfig"

 endmenu
--- a/lib/os/cpu_load/CMakeLists.txt
+++ b/lib/os/cpu_load/CMakeLists.txt
--- a/lib/os/cpu_load/Kconfig
+++ b/lib/os/cpu_load/Kconfig
@@ -3,14 +3,14 @@
 # SPDX-License-Identifier: Apache-2.0

 menuconfig CPU_LOAD_METRIC
-	bool "CPU Load Subsystem"
+	bool "CPU Load Metric"
 	select EXPERIMENTAL
 	select THREAD_RUNTIME_STATS
 	select SCHED_THREAD_USAGE
 	select SCHED_THREAD_USAGE_ALL
 	select SCHED_THREAD_USAGE_AUTO_ENABLE
 	help
-	  CPU Load subsystem
+	  Tracking of CPU load statistics.

 if CPU_LOAD_METRIC

--- a/lib/os/cpu_load/cpu_load.c
+++ b/lib/os/cpu_load/cpu_load.c
--- a/subsys/CMakeLists.txt
+++ b/subsys/CMakeLists.txt
@@ -41,7 +41,6 @@ add_subdirectory_ifdef(CONFIG_BINDESC bindesc)
 add_subdirectory_ifdef(CONFIG_BT bluetooth)
 add_subdirectory_ifdef(CONFIG_CONSOLE_SUBSYS console)
 add_subdirectory_ifdef(CONFIG_CPU_FREQ cpu_freq)
-add_subdirectory_ifdef(CONFIG_CPU_LOAD_METRIC cpu_load)
 add_subdirectory_ifdef(CONFIG_CRC crc)
 add_subdirectory_ifdef(CONFIG_DAP dap)
 add_subdirectory_ifdef(CONFIG_DEMAND_PAGING demand_paging)
--- a/subsys/Kconfig
+++ b/subsys/Kconfig
@@ -12,7 +12,6 @@ source "subsys/bluetooth/Kconfig"
 source "subsys/canbus/Kconfig"
 source "subsys/console/Kconfig"
 source "subsys/cpu_freq/Kconfig"
-source "subsys/cpu_load/Kconfig"
 source "subsys/crc/Kconfig"
 source "subsys/dap/Kconfig"
 source "subsys/debug/Kconfig"
--- a/subsys/cpu_freq/policies/on_demand/on_demand.c
+++ b/subsys/cpu_freq/policies/on_demand/on_demand.c
@@ -8,7 +8,7 @@
 #include <zephyr/logging/log.h>
 #include <zephyr/cpu_freq/policy.h>
 #include <zephyr/cpu_freq/cpu_freq.h>
-#include <zephyr/cpu_load/cpu_load.h>
+#include <zephyr/sys/cpu_load.h>

 LOG_MODULE_REGISTER(cpu_freq_policy_on_demand, CONFIG_CPU_FREQ_LOG_LEVEL);