2010-06-28 Joel Sherrill <joel.sherrill@oarcorp.com>

	PR 1573/cpukit
	* configure.ac, posix/src/killinfo.c,
	posix/src/psignalclearprocesssignals.c,
	posix/src/psignalsetprocesssignals.c,
	posix/src/psignalunblockthread.c, posix/src/pthreadcreate.c,
	posix/src/pthreadkill.c, posix/src/pthreadsigmask.c,
	rtems/src/signalsend.c, rtems/src/taskmode.c, score/Makefile.am,
	score/preinstall.am, score/include/rtems/system.h,
	score/include/rtems/score/context.h, score/include/rtems/score/isr.h,
	score/include/rtems/score/thread.h, score/src/isr.c,
	score/src/isrthreaddispatch.c, score/src/thread.c,
	score/src/threaddispatch.c, score/src/threadloadenv.c: Add a per cpu
	data structure which contains the information required by RTEMS for
	each CPU core. This encapsulates information such as thread
	executing, heir, idle and dispatch needed.
	* score/include/rtems/score/percpu.h, score/src/percpu.c: New files.

1 files changed, 8 insertions, 34 deletions

diff --git a/cpukit/score/include/rtems/score/thread.h b/cpukit/score/include/rtems/score/thread.h
index 1e05df8ed0..ca4b04fa22 100644
--- a/cpukit/score/include/rtems/score/thread.h
+++ b/cpukit/score/include/rtems/score/thread.h
@@ -24,6 +24,13 @@
  *
  *  This handler encapsulates functionality related to the management of
  *  threads.  This includes the creation, deletion, and scheduling of threads.
+ *
+ *  The following variables are maintained as part of the per cpu data
+ *  structure.
+ *
+ *  + Idle thread pointer
+ *  + Executing thread pointer
+ *  + Heir thread pointer
  */
 /**@{*/
 
@@ -55,6 +62,7 @@ extern "C" {
   typedef uint32_t Thread_CPU_usage_t;
 #endif
 
+#include <rtems/score/percpu.h>
 #include <rtems/score/context.h>
 #include <rtems/score/cpu.h>
 #if defined(RTEMS_MULTIPROCESSING)
@@ -147,10 +155,6 @@ typedef enum {
   #endif
 }  Thread_CPU_budget_algorithms;
 
-/** This type defines the Thread Control Block structure.
- */
-typedef struct Thread_Control_struct Thread_Control;
-
 /**  This defines thes the entry point for the thread specific timeslice
  *   budget management algorithm.
  */
@@ -363,10 +367,6 @@ struct Thread_Control_struct {
   /** This field is true if the thread is offered globally */
   bool                                  is_global;
 #endif
-  /** This field is is true if the post task context switch should be
-   *  executed for this thread at the next context switch.
-   */
-  bool                                  do_post_task_switch_extension;
   /** This field is true if the thread is preemptible. */
   bool                                  is_preemptible;
 #if __RTEMS_ADA__
@@ -427,12 +427,6 @@ SCORE_EXTERN void *rtems_ada_self;
 SCORE_EXTERN Objects_Information _Thread_Internal_information;
 
 /**
- *  The following define the thread control pointers used to access
- *  and manipulate the idle thread.
- */
-SCORE_EXTERN Thread_Control *_Thread_Idle;
-
-/**
  *  The following context area contains the context of the "thread"
  *  which invoked the start multitasking routine.  This context is
  *  restored as the last action of the stop multitasking routine.  Thus
@@ -449,12 +443,6 @@ SCORE_EXTERN Context_Control _Thread_BSP_context;
 SCORE_EXTERN volatile uint32_t   _Thread_Dispatch_disable_level;
 
 /**
- *  If this is non-zero, then the post-task switch extension
- *  is run regardless of the state of the per thread flag.
- */
-SCORE_EXTERN uint32_t   _Thread_Do_post_task_switch_extension;
-
-/**
  *  The following holds how many user extensions are in the system.  This
  *  is used to determine how many user extension data areas to allocate
  *  per thread.
@@ -473,20 +461,6 @@ SCORE_EXTERN uint32_t   _Thread_Ticks_per_timeslice;
 SCORE_EXTERN Chain_Control *_Thread_Ready_chain;
 
 /**
- *  The following points to the thread which is currently executing.
- *  This thread is implicitly manipulated by numerous directives.
- */
-SCORE_EXTERN Thread_Control *_Thread_Executing;
-
-/**
- *  The following points to the highest priority ready thread
- *  in the system.  Unless the current thread is not preemptibl,
- *  then this thread will be context switched to when the next
- *  dispatch occurs.
- */
-SCORE_EXTERN Thread_Control *_Thread_Heir;
-
-/**
  *  The following points to the thread whose floating point
  *  context is currently loaded.
  */