374 lines
10 KiB
Plaintext
374 lines
10 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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menu "System Logging"
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# Selected if the architecture has its own, built-in SYSLOGging enabled
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config ARCH_SYSLOG
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bool
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default n
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comment "SYSLOG options"
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config SYSLOG_MAX_CHANNELS
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int "Maximum SYSLOG channels"
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default 1
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---help---
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Maximum number of supported SYSLOG channels.
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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_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
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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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---help---
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The maximum number of threads that may be waiting on the poll method.
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config RAMLOG_OVERWRITE
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bool "RAMLOG overwrite circular buffer"
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default n
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---help---
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Enable overwrite of circular buffer. If RAMLOG buffer overflows,
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overwrite it from the top of buffer and always keep the latest log.
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config RAMLOG_POLLTHRESHOLD
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int "The threshold value of circular buffer to notify poll waiters"
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default 1
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---help---
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When the length of circular buffer exceeds the threshold value, the poll() will
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return POLLIN to all poll waiters.
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endif
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config SYSLOG_BUFFER
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bool "Use buffered output"
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default n
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select MM_IOB
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---help---
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Enables an buffering logic that will be used to serialize debug
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output from concurrent tasks. This enables allocation of one buffer
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per thread, each of size CONFIG_IOB_BUFSIZE.
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The use of SYSLOG buffering is optional. If not enabled, however,
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then the output from multiple tasks that attempt to generate SYSLOG
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output may be interleaved and difficult to read.
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config SYSLOG_INTBUFFER
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bool "Use interrupt buffer"
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default n
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---help---
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Enables an interrupt buffer that will be used to serialize debug
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output from interrupt handlers.
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config SYSLOG_INTBUFSIZE
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int "Interrupt buffer size"
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default 512
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depends on SYSLOG_INTBUFFER
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---help---
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The size of the interrupt buffer in bytes.
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comment "Formatting options"
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config SYSLOG_TIMESTAMP
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bool "Prepend timestamp to syslog message"
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default n
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---help---
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Prepend timestamp to syslog message.
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config SYSLOG_TIMESTAMP_REALTIME
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bool "Use wall-clock for syslog timestamp"
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default n
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depends on SYSLOG_TIMESTAMP
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---help---
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Use wall-clock (CLOCK_REALTIME) for timestamp. By default,
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CLOCK_MONOTONIC will be used.
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config SYSLOG_TIMESTAMP_FORMATTED
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bool "Formatted syslog time"
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default n
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depends on SYSLOG_TIMESTAMP_REALTIME
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---help---
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Syslog timestamp will be formatted according to the
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SYSLOG_TIMESTAMP_FORMAT format string.
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config SYSLOG_TIMESTAMP_LOCALTIME
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bool "Use local-time timestamp"
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default n
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depends on SYSLOG_TIMESTAMP_FORMATTED
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---help---
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If selected local time will be used for the timestamps.
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Else, timestamps will be in UTC.
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config SYSLOG_TIMESTAMP_FORMAT
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string "Time format"
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default "%d/%m/%y %H:%M:%S"
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depends on SYSLOG_TIMESTAMP_FORMATTED
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---help---
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Formatter string for syslog timestamp printing.
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Uses the standard "strftime" format specifiers.
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config SYSLOG_TIMESTAMP_FORMAT_MICROSECOND
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bool "Append microseconds after seconds"
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default y
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depends on SYSLOG_TIMESTAMP_FORMAT = "%d/%m/%y %H:%M:%S"
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config SYSLOG_TIMESTAMP_BUFFER
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int "Formatted timestamp buffer size"
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default 64
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depends on SYSLOG_TIMESTAMP_FORMATTED
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---help---
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Buffer size to store syslog formatted timestamps.
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config SYSLOG_PRIORITY
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bool "Prepend priority to syslog message"
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default n
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---help---
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Prepend log priority (severity) to syslog message.
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config SYSLOG_PROCESS_NAME
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bool "Prepend process name to syslog message"
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default n
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---help---
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Prepend Process name to syslog message.
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config SYSLOG_PROCESSID
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bool "Prepend process ID to syslog message"
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default n
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---help---
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Prepend Process ID to syslog message.
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config SYSLOG_PREFIX
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bool "Prepend prefix to syslog message"
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default n
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---help---
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Prepend prefix to syslog message.
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config SYSLOG_PREFIX_STRING
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string "Prefix string"
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depends on SYSLOG_PREFIX
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---help---
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The prefix string to be prepend.
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config SYSLOG_COLOR_OUTPUT
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bool "Colored syslog output"
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default n
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---help---
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Enables colored output in syslog, according to message priority.
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comment "SYSLOG channels"
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config SYSLOG_DEVPATH
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string "System log device"
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default "/dev/kmsg" if RAMLOG_SYSLOG
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default "/dev/ttyS1" if !RAMLOG_SYSLOG
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---help---
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The full path to the system logging device. For the RAMLOG SYSLOG device,
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this is normally "/dev/kmsg". For character SYSLOG devices, it should be
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some other existing character device (or file) supported by the configuration
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(such as "/dev/ttyS1")/
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if !ARCH_SYSLOG
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config SYSLOG_CHAR
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bool "Log to a character device"
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default n
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---help---
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Enable the generic character device for the SYSLOG. The full path to the
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SYSLOG device is provided by SYSLOG_DEVPATH. A valid character device (or
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file) must exist at this path. It will by opened by syslog_initialize.
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config RAMLOG_SYSLOG
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bool "Use RAMLOG for SYSLOG"
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depends on RAMLOG
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default n
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---help---
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Use the RAM logging device for the syslogging interface. If this
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feature is enabled (along with SYSLOG), then all debug output (only)
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will be re-directed to the circular buffer in RAM. This RAM log can
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be viewed from NSH using the 'dmesg' command.
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config SYSLOG_RPMSG
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bool "Log to RPMSG"
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depends on RPTUN
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depends on SCHED_WORKQUEUE
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default n
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---help---
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Use the rpmsg as a SYSLOG output device, send message to remote proc.
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config SYSLOG_STREAM
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bool "Log to stream"
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default n
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---help---
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Enables support to use stream as syslog backend, such as block out stream.
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It is recommended to implement the backend stream in a way that syslog
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works in interrupt context.
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config SYSLOG_CONSOLE
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bool "Log to /dev/console"
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default !ARCH_LOWPUTC && !SYSLOG_CHAR && !RAMLOG_SYSLOG && !SYSLOG_RPMSG && !SYSLOG_RTT
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depends on DEV_CONSOLE
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---help---
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Use the system console as a SYSLOG output device.
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config SYSLOG_DEFAULT
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bool "Default SYSLOG device"
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default ARCH_LOWPUTC && !SYSLOG_CHAR && !RAMLOG_SYSLOG && !SYSLOG_RPMSG && !SYSLOG_RTT && !SYSLOG_CONSOLE
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---help---
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syslog() interfaces will be present, but all output will go to the
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up_putc(ARCH_LOWPUTC == y) or bit-bucket(ARCH_LOWPUTC == n).
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endif
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if RAMLOG_SYSLOG
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config RAMLOG_BUFFER_SECTION
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string "The section where ramlog buffer is located"
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---help---
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The section where ramlog buffer is located.
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The section shall not be initialized on system boot.
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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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---help---
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Size of the console RAM log. Default: 1024
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endif # RAMLOG_SYSLOG
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if SYSLOG_RPMSG
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config SYSLOG_RPMSG_SERVER_NAME
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string "The name of Syslog Rpmsg Server"
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---help---
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The proc name of rpmsg server. Client sends message to
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specified name of remote proc.
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config SYSLOG_RPMSG_WORK_DELAY
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int "SYSLOG RPMSG work delay(ms)"
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default 100
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config SYSLOG_RPMSG_CHARDEV
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bool "SYSLOG rpmsg character device"
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default !SYSLOG_RPMSG_WORK_DELAY
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endif # SYSLOG_RPMSG
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config SYSLOG_RPMSG_SERVER
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bool "Enable RPMSG server for SYSLOG"
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default n
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depends on RPTUN
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---help---
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Use rpmsg to receive message from remote proc.
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config SYSLOG_RPMSG_SERVER_CHARDEV
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bool "SYSLOG rpmsg server character device"
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default n
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menuconfig SYSLOG_FILE
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bool "Syslog file output"
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default n
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---help---
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Build in support to use a file to collect SYSLOG output. File SYSLOG
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channels differ from other SYSLOG channels in that they cannot be
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established until after fully booting and mounting the target file
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system. The function syslog_file_channel() would need to be called
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from board-specific bring-up logic AFTER mounting the file system
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containing 'devpath'.
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NOTE interrupt level SYSLOG output will be lost in this case unless
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the interrupt buffer is used.
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if SYSLOG_FILE
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config SYSLOG_FILE_SEPARATE
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bool "Log file separation"
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default n
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---help---
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If enabled, every time the file logger is re-attached, a separator
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will be printed in the file.
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This can be useful to easily distinguish between log entries that
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belong to different log sessions (e.g. system reboot), and to
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indicate that between the separated lines there may be more logs
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that were lost.
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config SYSLOG_FILE_ROTATIONS
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int "Log file rotations"
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default 0
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---help---
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If enabled (set to a non-zero number), the log file size will be
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checked before opening. If it is larger than the specified limit
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it will be "rotated", i.e. the old file will be kept as a backup,
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and a new empty file will be created.
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The number of rotations specifies the number of old log files to
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keep.
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This option is useful to ensure that log files do not get
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huge after prolonged periods of system operation.
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config SYSLOG_FILE_SIZE_LIMIT
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int "Log file size limit"
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default 524288
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depends on SYSLOG_FILE_ROTATIONS > 0
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---help---
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File size limit when the log is rotated automatically.
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If a log file is found larger than this limit, it will
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be rotated.
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endif # SYSLOG_FILE
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config CONSOLE_SYSLOG
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bool "Use SYSLOG for /dev/console"
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default n
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depends on DEV_CONSOLE && !SYSLOG_CONSOLE
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---help---
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Use the syslog logging device as a system console. If this feature is
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enabled (along with DEV_CONSOLE), then all console output will be
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re-directed to syslog output (syslog_putc). This is useful, for
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example, if the only console is a Telnet console. Then in that case,
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console output from non-Telnet threads will go to the syslog output.
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config SYSLOG_CHARDEV
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bool "SYSLOG character device"
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default n
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---help---
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Enables support for a simple character driver at /dev/log whose
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write() method will transfer data to the SYSLOG device. This can be
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useful if, for example, you want to redirect the output of a program
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to the SYSLOG.
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NOTE that unlike other syslog output, this data is unformatted raw
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byte output with no time-stamping or any other SYSLOG features
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supported.
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endmenu # System logging
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