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zhanxiaoqi
786b315947
When CONFIG_FS_BACKTRACE is enabled, collecting a stack trace for every new file descriptor adds overhead to fast path operations like open(), dup(), and socket(). This patch adds a new configuration option CONFIG_FS_BACKTRACE_DEFAULT. When enabled (default behavior), the GROUP_FLAG_FD_BACKTRACE flag is automatically set during group allocation, causing backtrace to be captured for all tasks globally, preserving the original diagnostic capability. When disabled, backtrace capture is zero-cost by default and must be explicitly enabled per task group using GROUP_FLAG_FD_BACKTRACE. Signed-off-by: zhanxiaoqi <zhanxiaoqi@bytedance.com>
112 lines
2.2 KiB
Plaintext
112 lines
2.2 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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config FS_BACKTRACE_DEFAULT
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bool "Enable the backtrace record by default"
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default y
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depends on FS_BACKTRACE > 0
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---help---
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Enable automatic backtrace capture for all file descriptor operations
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globally. When disabled, backtrace capture is zero-cost by default
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and must be explicitly enabled per task group by setting the
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GROUP_FLAG_FD_BACKTRACE flag.
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