74 lines
2.3 KiB
Plaintext
74 lines
2.3 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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comment "System Logging"
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config RAMLOG
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bool "RAM log device support"
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default n
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---help---
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This is a driver that was intended to support debugging output,
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aka syslogging, when the normal serial output is not available.
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For example, if you are using a telnet or USB serial console,
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the debug output will get lost. However, the RAMLOG device should
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be usable even if system logging is disabled.
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This driver is similar to a pipe in that it saves the debugging
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output in a FIFO in RAM. It differs from a pipe in numerous
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details as needed to support logging.
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if RAMLOG
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config RAMLOG_SYSLOG
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bool "Use RAMLOG for SYSLOG"
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default n
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depends on SYSLOG
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---help---
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Use the RAM logging device for the syslogging interface. If this feature
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is enabled (along with SYSLOG), then all debug output (only) will be re-directed
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to the circular buffer in RAM. This RAM log can be view from NSH using the
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'dmesg'command.
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Do not enable more than one SYSLOG device.
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config RAMLOG_CONSOLE
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bool "Use RAMLOG for /dev/console"
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default n
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depends on DEV_CONSOLE
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---help---
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Use the RAM logging device as a system console. If this feature is enabled (along
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with DEV_CONSOLE), then all console output will be re-directed to a circular
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buffer in RAM. This is useful, for example, if the only console is a Telnet
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console. Then in that case, console output from non-Telnet threads will go to
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the circular buffer and can be viewed using the NSH 'dmesg' command.
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config RAMLOG_BUFSIZE
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int "RAMLOG buffer size"
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default 1024
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depends on RAMLOG_SYSLOG || RAMLOG_CONSOLE
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---help---
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Size of the console RAM log. Default: 1024
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config RAMLOG_CRLF
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bool "RAMLOG CR/LF"
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default n
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---help---
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Pre-pend a carriage return before every linefeed that goes into the RAM log.
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config RAMLOG_NONBLOCKING
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bool "RAMLOG non-block reads"
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default y
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---help---
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Reading from the RAMLOG will never block if the RAMLOG is empty. If the RAMLOG
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is empty, then zero is returned (usually interpreted as end-of-file).
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config RAMLOG_NPOLLWAITERS
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int "RAMLOG number of poll waiters"
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default 4
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depends on !DISABLE_POLL
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---help---
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The maximum number of threads that may be waiting on the poll method.
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endif
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