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Fix syslog mutual exclusion and interrupt level logic

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4999 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2012-08-02 18:43:01 +00:00
parent 8b1a214583
commit 8788a658e9
1 changed files with 5 additions and 1 deletions
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6
configs/README.txt
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@ -381,6 +381,8 @@ defconfig -- This is a configuration file similar to the Linux
is selected, then these options are also available.
CONFIG_SYSLOG_CHAR - Enable the generic character device for the SYSLOG.
A disadvantage of using the generic character device for the SYSLOG is that
it cannot handle debug output generated from interrupt level handlers.
NOTE: No more than one SYSLOG device should be configured.
CONFIG_RAMLOG - Enables the RAM logging feature. The RAM log is a circular
@ -395,7 +397,9 @@ defconfig -- This is a configuration file similar to the Linux
interface. If this feature is enabled (along with CONFIG_SYSLOG),
then all debug output (only) will be re-directed to the circular
buffer in RAM. This RAM log can be view from NSH using the 'dmesg'
command.
command. NOTE: Unlike the limited, generic character driver SYSLOG
device, the RAMLOG *can* be used to generate debug output from interrupt
level handlers.
CONFIG_RAMLOG_NPOLLWAITERS - The number of threads than can be waiting
for this driver on poll(). Default: 4