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Add support for multiple work queues

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5081 42af7a65-404d-4744-a932-0658087f49c3
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patacongo 2012-09-04 00:54:09 +00:00
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Documentation/NuttxPortingGuide.html
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@ -4068,6 +4068,20 @@ build
<code>CONFIG_SIG_SIGWORK</code>: The signal number that will be used to wake-up
the worker thread. Default: 4
</li>
<li>
<code>CONFIG_SCHED_LPWORK</code>: If CONFIG_SCHED_WORKQUEUE</code> is defined, then a single work queue is created by default.
If <code>CONFIG_SCHED_LPWORK</code> is also defined then an additional, lower-priority work queue will also be created.
This lower priority work queue is better suited for more extended processing (such as file system clean-up operations)
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<li>
<code>CONFIG_SCHED_LPWORKPRIORITY</code>: The execution priority of the lower priority worker thread. Default: 50
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<code>CONFIG_SCHED_LPWORKPERIOD</code>: How often the lower priority worker thread checks for work in units of microseconds. Default: 50*1000 (50 MS).
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<code>CONFIG_SCHED_LPWORKSTACKSIZE - The stack size allocated for the lower priority worker thread. Default: CONFIG_IDLETHREAD_STACKSIZE.
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<code>CONFIG_SCHED_WAITPID</code>: Enables the <a href="NuttxUserGuide.html#waitpid"><code>waitpid()</code><a> API
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