doc: group logging features under subsystem/

Change-Id: Ia2d03e64071523086a693cd8627dcea223ff9b90
Signed-off-by: Anas Nashif <anas.nashif@intel.com>

doc/api/api.rst

@@ -20,7 +20,6 @@ The Zephyr APIs are used the same way on all SoCs and boards.
    device.rst
    bluetooth.rst
    io_interfaces.rst
-   event_logger.rst
    power_management_api
    file_system
    testing

doc/api/event_logger.rst

@@ -1,30 +0,0 @@
-.. _event_logger:
-
-Event Logging APIs
-##################
-
-.. contents::
-   :depth: 1
-   :local:
-   :backlinks: top
-
-Event Logger
-************
-
-An event logger is an object that can record the occurrence of significant
-events, which can be subsequently extracted and reviewed.
-
-.. doxygengroup:: event_logger
-   :project: Zephyr
-   :content-only:
-
-Kernel Event Logger
-*******************
-
-The kernel event logger records the occurrence of significant kernel events,
-which can be subsequently extracted and reviewed.
-(See :ref:`kernel_event_logger_v2`.)
-
-.. doxygengroup:: kernel_event_logger
-   :project: Zephyr
-   :content-only:

doc/kernel/other/other.rst

@@ -13,6 +13,5 @@ This section describes other services provided by the kernel.
    atomic.rst
    float.rst
    ring_buffers.rst
-   kernel_event_logger.rst
    c_library.rst
    cxx_support.rst

doc/subsystems/logging/index.rst

@@ -0,0 +1,8 @@
+Logging
+########
+
+.. toctree::
+   :maxdepth: 1
+
+   system_log
+   kernel_event_logger

doc/subsystems/logging/kernel_event_logger.rst

@@ -234,8 +234,8 @@ Related configuration options:
 * :option:`CONFIG_KERNEL_EVENT_LOGGER_DYNAMIC`
 * :option:`CONFIG_KERNEL_EVENT_LOGGER_CUSTOM_TIMESTAMP`
 
-APIs
-****
+Related Functions
+*******************
 
 The following kernel event logger APIs are provided by
 :file:`kernel_event_logger.h`:
@@ -250,3 +250,27 @@ The following kernel event logger APIs are provided by
 * :cpp:func:`sys_k_event_logger_get_mask()`
 * :cpp:func:`sys_k_event_logger_set_mask()`
 * :cpp:func:`sys_k_event_logger_set_timer()`
+
+APIs
+****
+
+Event Logger
+============
+
+An event logger is an object that can record the occurrence of significant
+events, which can be subsequently extracted and reviewed.
+
+.. doxygengroup:: event_logger
+   :project: Zephyr
+   :content-only:
+
+Kernel Event Logger
+===================
+
+The kernel event logger records the occurrence of significant kernel events,
+which can be subsequently extracted and reviewed.
+(See :ref:`kernel_event_logger_v2`.)
+
+.. doxygengroup:: kernel_event_logger
+   :project: Zephyr
+   :content-only:

doc/subsystems/logging/system_log.rst

@@ -1,19 +1,7 @@
 .. _system_log:
 
-Logging
-########
-
-.. contents::
-   :depth: 1
-   :local:
-   :backlinks: top
-
-System Log
-************
-
-.. doxygengroup:: system_log
-   :project: Zephyr
-   :content-only:
+System Logging
+##############
 
 The system log API provides a common interface to process messages issued by
 developers. These messages are currently printed on the terminal but the API is
@@ -93,3 +81,12 @@ true:
   configuration is not set.
 - The module configuration is set to 2 or above.
 - The :option:`CONFIG_SYS_LOG_OVERRIDE_LEVEL` is set to 2 or above.
+
+
+APIs
+****
+
+.. doxygengroup:: system_log
+   :project: Zephyr
+   :content-only:
+

doc/subsystems/subsystems.rst

@@ -15,4 +15,4 @@ to applications.
    sensor
    power_management.rst
    shell
-   system_log
+   logging/index