[Bug 1924] Enhanced stack allocator configuration

[bugzilla-daemon at rtems.org]

https://www.rtems.org/bugzilla/show_bug.cgi?id=1924

--- Comment #1 from Sebastian Huber <sebastian.huber at embedded-brains.de> 2011-10-26 06:02:43 CDT ---
Created attachment 1358
  --> https://www.rtems.org/bugzilla/attachment.cgi?id=1358
Added stack_space_size field to Configuration.

This patch adds a new field to the Configuration (rtems_configuration_table):
stack_space_size.  This value determines in addition to the existing
work_space_size the size for the RTEMS work space.  In confdefs.h the
estimation of the stack sizes is separated from the other objects now.  In the
future the new stack_space_size field can be used by custom thread stack
allocators.

Warning: The size for Ada tasks changed.

-  /**
-   * Ada tasks are allocated twice the minimum stack space.
-   */
-  #define CONFIGURE_ADA_TASKS_STACK \
-    (CONFIGURE_MAXIMUM_ADA_TASKS * \
-      (CONFIGURE_MINIMUM_TASK_STACK_SIZE + (6 * 1024)))

It was changed according to the comment.  This seems to be appropriate since
Ada tasks are allocated from the POSIX thread pool.

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