[PATCH 4/5] kern: reduce the size of struct task

[Justus Winter]

* kern/task.h (struct task): Reduce the size of struct task by
2 * sizeof boolean_t by using a bit field for the boolean flags.
---
 kern/task.h | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/kern/task.h b/kern/task.h
index 9bfea57..e852033 100644
--- a/kern/task.h
+++ b/kern/task.h
@@ -52,7 +52,11 @@ struct task {
        /* Synchronization/destruction information */
        decl_simple_lock_data(,lock)    /* Task's lock */
        int             ref_count;      /* Number of references to me */
-       boolean_t       active;         /* Task has not been terminated */
+
+       /* Flags */
+       unsigned int    active:1,       /* Task has not been terminated */
+       /* boolean_t */ may_assign:1,   /* can assigned pset be changed? */
+                       assign_active:1;        /* waiting for may_assign */
 
        /* Miscellaneous */
        vm_map_t        map;            /* Address space description */
@@ -63,8 +67,6 @@ struct task {
        queue_head_t    thread_list;    /* list of threads */
        int             thread_count;   /* number of threads */
        processor_set_t processor_set;  /* processor set for new threads */
-       boolean_t       may_assign;     /* can assigned pset be changed? */
-       boolean_t       assign_active;  /* waiting for may_assign */
 
        /* User-visible scheduling information */
        int             user_stop_count;        /* outstanding stops */
-- 
1.8.5.2