posix: sched: Add CONFIG_POSIX_PRIORITY_SCHEDULING

Add `CONFIG_POSIX_PRIORITY_SCHEDULING` Kconfig option to select
APIs from PSE53 `_POSIX_PRIORITY_SCHEDULING` option group.

Signed-off-by: Dmitrii Golovanov <[email protected]>

Author: golowanow

doc/services/portability/posix/aep/index.rst

@@ -52,7 +52,7 @@ Minimal Realtime System Profile (PSE51)
     _POSIX_THREAD_CPUTIME, -1,
     _POSIX_THREAD_PRIO_INHERIT, 200809L, :kconfig:option:`CONFIG_PTHREAD_MUTEX`
     _POSIX_THREAD_PRIO_PROTECT, -1,
-    _POSIX_THREAD_PRIORITY_SCHEDULING, -1,
+    _POSIX_THREAD_PRIORITY_SCHEDULING, -1, :kconfig:option:`CONFIG_POSIX_PRIORITY_SCHEDULING` (will fail with ``ENOSYS``:ref:`†<posix_undefined_behaviour>`)
     _POSIX_THREAD_SPORADIC_SERVER, -1,
     _POSIX_TIMEOUTS, 200809L, :kconfig:option:`CONFIG_PTHREAD_IPC`
     _POSIX_TIMERS, 200809L, :kconfig:option:`CONFIG_POSIX_CLOCK`

doc/services/portability/posix/conformance/index.rst

@@ -87,7 +87,7 @@ POSIX System Interfaces
     :ref:`_POSIX_MESSAGE_PASSING<posix_option_message_passing>`, 200809L, :kconfig:option:`CONFIG_POSIX_MQUEUE`
     _POSIX_MONOTONIC_CLOCK, 200809L, :kconfig:option:`CONFIG_POSIX_CLOCK`
     _POSIX_PRIORITIZED_IO, -1,
-    :ref:`_POSIX_PRIORITY_SCHEDULING<posix_option_priority_scheduling>`, -1, :kconfig:option:`CONFIG_PTHREAD`
+    :ref:`_POSIX_PRIORITY_SCHEDULING<posix_option_priority_scheduling>`, -1, :kconfig:option:`CONFIG_POSIX_PRIORITY_SCHEDULING` (will fail with ``ENOSYS``:ref:`†<posix_undefined_behaviour>`)
     _POSIX_RAW_SOCKETS, 200809L, :kconfig:option:`CONFIG_NET_SOCKETS`
     _POSIX_SHARED_MEMORY_OBJECTS, -1,
     _POSIX_SPAWN, -1,

lib/posix/CMakeLists.txt

@@ -54,7 +54,7 @@ zephyr_library_sources_ifdef(CONFIG_PTHREAD_KEY key.c)
 zephyr_library_sources_ifdef(CONFIG_PTHREAD_MUTEX mutex.c)
 zephyr_library_sources_ifdef(CONFIG_PTHREAD pthread.c)
 zephyr_library_sources_ifdef(CONFIG_PTHREAD_IPC rwlock.c)
-zephyr_library_sources_ifdef(CONFIG_PTHREAD_IPC sched.c)
+zephyr_library_sources_ifdef(CONFIG_POSIX_PRIORITY_SCHEDULING sched.c)
 zephyr_library_sources_ifdef(CONFIG_PTHREAD_IPC semaphore.c)
 zephyr_library_sources_ifdef(CONFIG_PTHREAD_SPINLOCK spinlock.c)
 

lib/posix/Kconfig

@@ -49,6 +49,7 @@ source "lib/posix/Kconfig.limits"
 source "lib/posix/Kconfig.mqueue"
 source "lib/posix/Kconfig.mutex"
 source "lib/posix/Kconfig.pthread"
+source "lib/posix/Kconfig.sched"
 source "lib/posix/Kconfig.semaphore"
 source "lib/posix/Kconfig.signal"
 source "lib/posix/Kconfig.spinlock"

lib/posix/Kconfig.sched

@@ -0,0 +1,11 @@
+# Copyright (c) 2023 Intel Corporation
+#
+# SPDX-License-Identifier: Apache-2.0
+
+config POSIX_PRIORITY_SCHEDULING
+	bool "_POSIX_PRIORITY_SCHEDULING API support"
+	default y if PTHREAD
+	default y if POSIX_API
+	depends on PTHREAD
+	help
+	  This enables POSIX scheduling APIs (_POSIX_PRIORITY_SCHEDULING).

tests/posix/common/prj.conf

@@ -4,6 +4,7 @@ CONFIG_MAX_PTHREAD_COUNT=10
 CONFIG_ZTEST=y
 CONFIG_SEM_VALUE_MAX=32767
 CONFIG_POSIX_MQUEUE=y
+CONFIG_POSIX_PRIORITY_SCHEDULING=y
 CONFIG_HEAP_MEM_POOL_SIZE=4096
 CONFIG_MAX_THREAD_BYTES=4
 CONFIG_THREAD_NAME=y