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73 lines
2.3 KiB
73 lines
2.3 KiB
# |
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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_CONSOLE_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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