eventfd: bring config to top-level of posix dir, since it is not posix

The eventfd configuration does not need to be so deeply nested within
POSIX since it does not depend on POSIX completely.

Signed-off-by: Chris Friedt <[email protected]>

Author: cfriedt

lib/posix/CMakeLists.txt

@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
 add_subdirectory(options)
+add_subdirectory_ifdef(CONFIG_EVENTFD eventfd)
 add_subdirectory_ifdef(CONFIG_POSIX_SHELL shell)

lib/posix/Kconfig

@@ -7,4 +7,7 @@ menu "POSIX API Support"
 rsource "options/Kconfig"
 rsource "shell/Kconfig"
 
-endmenu # "POSIX API Support"
+endmenu
+
+# Eventfd Support (not officially POSIX)
+rsource "eventfd/Kconfig"

lib/posix/eventfd/CMakeLists.txt

@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: Apache-2.0
+
+zephyr_library()
+zephyr_library_sources(eventfd.c)

lib/posix/options/Kconfig.compat renamed to lib/posix/eventfd/Kconfig

@@ -3,8 +3,6 @@
 #
 # SPDX-License-Identifier: Apache-2.0
 
-menu "Miscellaneous POSIX-related options"
-
 config EVENTFD
 	bool "Support for eventfd"
 	select ZVFS
@@ -13,5 +11,3 @@ config EVENTFD
 	  Enable support for event file descriptors, eventfd. An eventfd can
 	  be used as an event wait/notify mechanism together with POSIX calls
 	  like read, write and poll.
-
-endmenu

lib/posix/options/eventfd.c renamed to lib/posix/eventfd/eventfd.c

@@ -30,7 +30,6 @@ if (NOT CONFIG_TC_PROVIDES_POSIX_SIGNALS)
 endif()
 
 zephyr_library()
-zephyr_library_sources_ifdef(CONFIG_EVENTFD eventfd.c)
 
 if (NOT CONFIG_TC_PROVIDES_POSIX_ASYNCHRONOUS_IO)
   zephyr_library_sources_ifdef(CONFIG_POSIX_ASYNCHRONOUS_IO aio.c)

lib/posix/options/CMakeLists.txt

@@ -40,8 +40,6 @@ rsource "Kconfig.xsi_threads_ext"
 
 endmenu # "X/Open system interfaces"
 
-rsource "Kconfig.compat"
-
 rsource "Kconfig.toolchain"
 
 endmenu # "POSIX Options"