forked from Archive/PX4-Autopilot
420 lines
11 KiB
Plaintext
420 lines
11 KiB
Plaintext
#
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# For a description of the syntax of this configuration file,
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# see misc/tools/kconfig-language.txt.
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#
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config MSEC_PER_TICK
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int "tick timer"
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default 10
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---help---
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The default system timer is 100Hz or MSEC_PER_TICK=10. This setting
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may be defined to inform NuttX that the processor hardware is providing
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system timer interrupts at some interrupt interval other than 10 msec.
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config RR_INTERVAL
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int "round robin timeslice"
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default 0
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---help---
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The round robin timeslice will be set this number of milliseconds;
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Round robin scheduling can be disabled by setting this value to zero.
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config SCHED_INSTRUMENTATION
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bool "Monitor system performance"
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default n
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---help---
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enables instrumentation in scheduler to monitor system performance.
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config TASK_NAME_SIZE
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int "Maximum task name size"
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default 32
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---help---
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Spcifies that maximum size of a task name to save in the TCB.
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Useful if scheduler instrumentation is selected. Set to zero to
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disable.
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config JULIAN_TIME
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bool "Enables Julian time conversions"
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default n
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---help---
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Enables Julian time conversions
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config START_YEAR
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int "start year"
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default 2010
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config START_MONTH
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int "start month"
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default 1
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config START_DAY
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int "start day"
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default 1
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config DEV_CONSOLE
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bool "Enable /dev/console"
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default y
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---help---
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Set if architecture-specific logic provides /dev/console. Enables
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stdout, stderr, stdin.
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config DEV_LOWCONSOLE
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bool "enable low-level serial console"
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default n
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---help---
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Use the simple, low-level, write-only serial console driver (minimul support)
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config MUTEX_TYPES:
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bool "Enable mutex types"
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default n
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---help---
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Set to enable support for recursive and errorcheck mutexes. Enables
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pthread_mutexattr_settype().
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config PRIORITY_INHERITANCE
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bool "Enable priority inheritance "
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default n
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---help---
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Set to enable support for priority inheritance on mutexes and semaphores.
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config SEM_PREALLOCHOLDERS
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int "Pre-allocated holders"
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default 16
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depends on PRIORITY_INHERITANCE
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---help---
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This setting is only used if priority inheritance is enabled.
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It defines the maximum number of different threads (minus one) that
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can take counts on a semaphore with priority inheritance support.
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This may be set to zero if priority inheritance is disabled OR if you
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are only using semaphores as mutexes (only one holder) OR if no more
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than two threads participate using a counting semaphore.
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config SEM_NNESTPRIO
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int "Maximum number of higher priority threads"
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default 16
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depends on PRIORITY_INHERITANCE
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---help---
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If priority inheritance is enabled, then this setting is the
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maximum number of higher priority threads (minus 1) than can be
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waiting for another thread to release a count on a semaphore.
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This value may be set to zero if no more than one thread is
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expected to wait for a semaphore.
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config FDCLONE_DISABLE
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bool "Disable cloning of file descriptors"
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default n
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---help---
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Disable cloning of all file descriptors
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by task_create() when a new task is started. If set, all
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files/drivers will appear to be closed in the new task.
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config FDCLONE_STDIO
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bool "Disable clone file descriptors without stdio"
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default n
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---help---
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Disable cloning of all but the first three file descriptors (stdin,
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stdout, stderr) by task_create() when a new task is started. If set,
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all files/drivers will appear to be closed in the new task except
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for stdin, stdout, and stderr.
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config SDCLONE_DISABLE
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bool "Disable cloning of socket descriptors"
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default n
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---help---
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Disable cloning of all socket
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desciptors by task_create() when a new task is started. If
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set, all sockets will appear to be closed in the new task.
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config SCHED_WORKQUEUE
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bool "Enable worker thread"
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default n
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---help---
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Create a dedicated "worker" thread to handle delayed processing from interrupt
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handlers. This feature is required for some drivers but, if there are no
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complaints, can be safely disabled. The worker thread also performs
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garbage collection -- completing any delayed memory deallocations from
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interrupt handlers. If the worker thread is disabled, then that clean up will
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be performed by the IDLE thread instead (which runs at the lowest of priority
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and may not be appropriate if memory reclamation is of high priority).
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config SCHED_WORKPRIORITY
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int "Worker thread priority"
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default 192
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depends on SCHED_WORKQUEUE
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---help---
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The execution priority of the worker thread. Default: 192
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config SCHED_WORKPERIOD
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int "Worker thread period"
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default 50000
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depends on SCHED_WORKQUEUE
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---help---
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How often the worker thread checks for work in units of microseconds.
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Default: 50*1000 (50 MS).
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config SCHED_WORKSTACKSIZE
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int "Worker thread stack size"
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default 2048
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depends on SCHED_WORKQUEUE
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---help---
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The stack size allocated for the worker thread. Default: 2K.
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config SIG_SIGWORK
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int "Worker thread wakeup signal"
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default 4
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depends on SCHED_WORKQUEUE
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---help---
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The signal number that will be used to wake-up the worker thread.
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Default: 4
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config SCHED_LPWORK
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bool "Enable a lower priority worker thread"
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default n
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depends on SCHED_WORKQUEUE
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---help---
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If SCHED_WORKQUEUE is defined, then a single work queue is created by
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default. If SCHED_LPWORK is also defined then an additional, lower-
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priority work queue will also be created. This lower priority work
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queue is better suited for more extended processing (such as file system
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clean-up operations)
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config SCHED_LPWORKPRIORITY
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int "Lower priority worker thread priority"
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default 50
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depends on SCHED_LPWORK
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---help---
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The execution priority of the lopwer priority worker thread. Default: 192
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config SCHED_LPWORKPERIOD
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int "Lower priority worker thread period"
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default 50000
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depends on SCHED_LPWORK
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---help---
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How often the lower priority worker thread checks for work in units
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of microseconds. Default: 50*1000 (50 MS).
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config SCHED_LPWORKSTACKSIZE
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int "Lower priority worker thread stack size"
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default 2048
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depends on SCHED_LPWORK
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---help---
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The stack size allocated for the lower priority worker thread. Default: 2K.
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config SCHED_WAITPID
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bool "Enable waitpid() API"
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default n
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---help---
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Enables the waitpid() API
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config SCHED_ATEXIT
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bool "Enable atexit() API"
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default n
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---help---
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Enables the atexit() API
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config SCHED_ATEXIT_MAX
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int "Max number of atexit() functions"
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default 1
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depends on SCHED_ATEXIT
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---help---
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By default if SCHED_ATEXIT is selected, only a single atexit() function
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is supported. That number can be increased by defined this setting to
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the number that you require.
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config SCHED_ONEXIT
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bool "Enable on_exit() API"
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default n
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---help---
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Enables the on_exit() API
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config SCHED_ONEXIT_MAX
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int "Max number of on_exit() functions"
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default 1
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depends on SCHED_ONEXIT
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---help---
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By default if SCHED_ONEXIT is selected, only a single on_exit() function
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is supported. That number can be increased by defined this setting to the
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number that you require.
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config USER_ENTRYPOINT
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string "Application entry point"
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default "user_start"
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---help---
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The name of the entry point for user applications. For the example
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applications this is of the form 'app_main' where 'app' is the application
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name. If not defined, USER_ENTRYPOINT defaults to "user_start."
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config DISABLE_OS_API
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bool "Disable NuttX interfaces"
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default y
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---help---
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The following can be used to disable categories of
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APIs supported by the OS. If the compiler supports
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weak functions, then it should not be necessary to
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disable functions unless you want to restrict usage
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of those APIs.
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There are certain dependency relationships in these
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features.
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o mq_notify logic depends on signals to awaken tasks
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waiting for queues to become full or empty.
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o pthread_condtimedwait() depends on signals to wake
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up waiting tasks.
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config DISABLE_CLOCK
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bool "Disable clock interfaces"
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depends on DISABLE_OS_API
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default n
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config DISABLE_POSIX_TIMERS
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bool "Disable POSIX timers"
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depends on DISABLE_OS_API
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default n
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config DISABLE_PTHREAD
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bool "Disable pthread support"
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depends on DISABLE_OS_API
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default n
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config DISABLE_SIGNALS
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bool "Disable signal support"
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depends on DISABLE_OS_API
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default n
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config DISABLE_MQUEUE
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bool "Disable POSIX message queue support"
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depends on DISABLE_OS_API
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default n
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config DISABLE_MOUNTPOINT
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bool "Disable support for mount points"
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depends on DISABLE_OS_API
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default n
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config DISABLE_ENVIRON
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bool "Disable environment variable support"
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depends on DISABLE_OS_API
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default n
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config DISABLE_POLL
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bool "Disable driver poll interfaces"
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depends on DISABLE_OS_API
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default n
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comment "Sizes of configurable things (0 disables)"
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config MAX_TASKS
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int "Max tasks"
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default 32
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---help---
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The maximum number of simultaneously active tasks. This value must be
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a power of two.
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config MAX_TASK_ARGS
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int "Maximum number of task arguments"
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default 4
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---help---
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This controls the maximum number of of parameters that a task may
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receive (i.e., maxmum value of 'argc')
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config NPTHREAD_KEYS
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int "Number of pthread keys"
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default 4
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---help---
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The number of items of thread-
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specific data that can be retained
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config NFILE_DESCRIPTORS
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int "Max file descriptors"
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default 16
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---help---
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The maximum number of file
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descriptors (one for each open)
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config NFILE_STREAMS
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int "Max file streams"
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default 16
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---help---
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The maximum number of streams that can be fopen'ed
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config NAME_MAX
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int "name max"
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default 32
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---help---
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The maximum size of a file name.
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config PREALLOC_MQ_MSGS
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int "Pre-allocated messages"
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default 32
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---help---
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The number of pre-allocated message structures. The system manages
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a pool of preallocated message structures to minimize dynamic allocations
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config MQ_MAXMSGSIZE
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int "Maximum message size"
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default 32
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---help---
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Message structures are allocated with a fixed payload size given by this
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setting (does not include other message structure overhead.
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config MAX_WDOGPARMS
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int "max watchdog parms"
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default 4
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---help---
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Maximum number of parameters that
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can be passed to a watchdog handler
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config PREALLOC_WDOGS
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int "Pre-allocated watchdogs"
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default 32
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---help---
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The number of pre-allocated watchdog structures. The system manages a
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pool of preallocated watchdog structures to minimize dynamic allocations
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config PREALLOC_TIMERS
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int "Pre-allocated timers"
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default 8
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---help---
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The number of pre-allocated POSIX timer structures. The system manages a
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pool of preallocated timer structures to minimize dynamic allocations. Set to
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zero for all dynamic allocations.
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comment "Stack and heap information"
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config CUSTOM_STACK
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bool "Enable custom stack"
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default n
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---help---
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The up_ implementation will handle all stack operations outside of the
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nuttx model. This is necessary for certain architectures that have
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have hardware stacks (such as the 8051 family).
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config IDLETHREAD_STACKSIZE
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int "Idle thread stack size"
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default 1024
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---help---
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The size of the initial stack used by the IDLE thread. The IDLE thread
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is the thread that (1) performs the inital boot of the system up to the
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point where user_start() is spawned, and (2) there after is the IDLE
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thread that executes only when there is no other thread ready to run.
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config USERMAIN_STACKSIZE
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int "Main thread stack size"
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default 2048
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---help---
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The size of the stack to allocate for the main user thread that begins at
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the user_start() entry point.
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config PTHREAD_STACK_MIN
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int "Minimum pthread stack size"
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default 256
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---help---
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Minimum pthread stack size
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config PTHREAD_STACK_DEFAULT
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int "Default pthread stack size"
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default 2048
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---help---
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Default pthread stack size
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