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wangchengdong
faf864b04f
Signals in NuttX serve two primary purposes:
1. Synchronization and wake-up:
Signals can be used to block threads on specific signal sets and later
wake them up by delivering the corresponding signals to those threads.
2. Asynchronous notification:
Signals can also be used to install callback handlers for specific signals, allowing threads to
asynchronously invoke those handlers when the signals are delivered.
This change introduces the ability to disable all signal functionality to reduce footprint for NuttX.
Signed-off-by: Chengdong Wang wangchengdong@lixiang.com
102 lines
1.9 KiB
Plaintext
102 lines
1.9 KiB
Plaintext
#
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# For a description of the syntax of this configuration file,
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# see the file kconfig-language.txt in the NuttX tools repository.
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#
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config EVENT_FD
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bool "EventFD"
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default n
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---help---
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Create a file descriptor for event notification
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if EVENT_FD
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config EVENT_FD_POLL
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bool "EventFD poll support"
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default y
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---help---
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Poll support for file descriptor based events
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config EVENT_FD_NPOLLWAITERS
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int "Number of eventFD poll waiters"
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default 2
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depends on EVENT_FD_POLL
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---help---
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Maximum number of threads that can be waiting on poll()
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endif # EVENT_FD
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config TIMER_FD
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bool "TimerFD"
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default n
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---help---
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Create a file descriptor for timer notification
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if TIMER_FD
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config TIMER_FD_POLL
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bool "TimerFD poll support"
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default y
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---help---
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Poll support for file descriptor based timers
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config TIMER_FD_NPOLLWAITERS
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int "Number of timerFD poll waiters"
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default 2
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depends on TIMER_FD_POLL
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---help---
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Maximum number of threads that can be waiting on poll()
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endif # TIMER_FD
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config SIGNAL_FD
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bool "SignalFD"
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depends on !DISABLE_ALL_SIGNALS
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default n
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---help---
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Create a file descriptor for accepting signals
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if SIGNAL_FD
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config SIGNAL_FD_NPOLLWAITERS
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int "Number of signalFD poll waiters"
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default 2
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---help---
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Maximum number of threads that can be waiting on poll()
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endif # SIGNAL_FD
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config FS_NOTIFY
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bool "FS Notify System"
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default n
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---help---
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The Fsnotify System
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if FS_NOTIFY
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config FS_NOTIFY_BUCKET_SIZE
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int "Dir hash bucket size"
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default 64
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config FS_NOTIFY_MAX_EVENTS
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int "Max events in one notify device"
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default 1024
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config FS_NOTIFY_FD_POLLWAITERS
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int "Max pollwaiters in one notify device"
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default 2
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endif # FS_NOTIFY
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config FS_BACKTRACE
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int "VFS backtrace"
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default 0
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---help---
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Add backtrace to vfs file open.
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config FS_BACKTRACE_SKIP
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int "Backtrace to skip"
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default 2
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depends on FS_BACKTRACE > 0
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---help---
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Skip depth of backtrace.
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