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2011-03-16 Jennifer Averett <jennifer.averett@OARcorp.com>

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PR 1743/cpu
	* user/conf.t: Add Simple Priority Scheduler as complement to existing
	Deterministic Priority Scheduler. This scheduler serves both as an
	example and as a lighter weight implementation for smaller systems.
This commit is contained in:
Joel Sherrill
2011-03-16 16:39:16 +00:00
parent 5bbc204431
commit 18b8ac71d8
2 changed files with 17 additions and 0 deletions
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doc/user/conf.t
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@@ -408,6 +408,16 @@ This scheduler requires a variable amount of memory based upon the number
of priorities configured in the system. This scheduler may be explicitly
selected by defining @code{CONFIGURE_SCHEDULER_PRIORITY}.
@findex CONFIGURE_SCHEDULER_SIMPLE
@item Simple Priority Scheduler - This is an alternative scheduler
in RTEMS. It is designed to provide the same task scheduling behaviour
as the Deterministic Priority Scheduler while being simpler in implementation
and uses less memory for data management. It maintains a single sorted list
of all ready threads. Thus blocking or unblocking a thread is not a
constant time operation with this scheduler. This scheduler is appropriate
for use in small systems where RAM is limited. This scheduler may be explicitly
selected by defining @code{CONFIGURE_SCHEDULER_SIMPLE}.
@end itemize
The pluggable scheduler interface was added after the 4.10 release series