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-rw-r--r--nuttx/arch/README.txt18
1 files changed, 16 insertions, 2 deletions
diff --git a/nuttx/arch/README.txt b/nuttx/arch/README.txt
index bdc353cbb..e10393c9f 100644
--- a/nuttx/arch/README.txt
+++ b/nuttx/arch/README.txt
@@ -62,7 +62,7 @@ defconfig -- This is a configuration file similar to the Linux
General OS setup
- CONFIG_EXAMPLE - identifies the subdirectgory in examples
+ CONFIG_EXAMPLE - identifies the subdirectory in examples
that will be used in the build
CONFIG_DEBUG - enables built-in debug options
CONFIG_DEBUG_VERBOSE - enables verbose debug output
@@ -82,7 +82,21 @@ defconfig -- This is a configuration file similar to the Linux
CONFIG_DEV_CONSOLE - Set if architecture-specific logic
provides /dev/console. Enables stdout, stderr, stdin.
- Allow for artchitecture optimized implementations
+ The following can be used to disable categories of APIs supported
+ by the OS. If the compiler supports weak functions, then it
+ should not be necessary to disable functions unless you want to
+ restrict usage of those APIs.
+
+ There are certain dependency relationships in these features.
+
+ o mq_notify logic depends on signals to awaken tasks
+ waiting for queues to become full or empty.
+ o pthread_condtimedwait() depends on signals to wake
+ up waiting tasks.
+
+ CONFIG_DISABLE_SIGNALS, CONFIG_DISABLE_MQUEUE
+
+ Allow for architecture optimized implementations
The architecture can provide optimized versions of the
following to improve sysem performance