Support task_wait / task_wait_tid syscalls:

    - Add task_end2 syscall to allow pthread_exit-like retval.
    - Add/maintain task states.
    - Create task parent/child tracking tree.
    - Add task_detach function.
    - Implement wait syscalls.

Make task_exec caller the parent of spawned task:

    Previously the task_exec call caused a message to the
    VFS task, which called task_create and returned the tid
    in response to the message.  This causes the parent of
    the spawned task to appear to be the VFS task.

    Modify task_exec / VFS handling to instead return the
    entry point address on the message and have task_exec call
    task_create directly itself.

Change-Id: I6b6796f45875de37b1ab01e7596639b073820b95
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/443
Tested-by: Jenkins Server
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
Reviewed-by: Andrew J. Geissler <andrewg@us.ibm.com>

1 files changed, 0 insertions, 2 deletions

diff --git a/src/kernel/cpumgr.C b/src/kernel/cpumgr.C
index 01af160f1..86e8653bf 100644
--- a/src/kernel/cpumgr.C
+++ b/src/kernel/cpumgr.C
@@ -149,7 +149,6 @@ void CpuManager::startCPU(ssize_t i)
 
     if (currentCPU)
     {
-	setSPRG3((uint64_t) cv_cpus[i]->idle_task);
         setDEC(TimeManager::getTimeSliceCount());
     }
     return;
@@ -157,7 +156,6 @@ void CpuManager::startCPU(ssize_t i)
 
 void CpuManager::startSlaveCPU(cpu_t* cpu)
 {
-    setSPRG3((uint64_t) cpu->idle_task);
     setDEC(TimeManager::getTimeSliceCount());
 
     return;