added flag for non-preemptable sections

1 files changed, 7 insertions, 3 deletions

diff --git a/include/linux/rt_param.h b/include/linux/rt_param.h
index da207f3262..74a4b59b79 100644
--- a/include/linux/rt_param.h
+++ b/include/linux/rt_param.h
@@ -56,6 +56,8 @@ typedef struct task_rt_param {
         rt_param_t              basic_params;
         /* is the task sleeping? */
         unsigned int            flags;
+        /* can the current job be preempted? */
+        unsigned int            is_non_preemptable;
         
         /* put information for feedback control stuff and 
          * information about the performance of the task here
@@ -78,9 +80,10 @@ typedef struct task_rt_param {
 } task_rt_param_t;
 
 /*      Possible RT flags       */
-#define RT_F_RUNNING    0x00000000
-#define RT_F_SLEEP      0x00000001
-#define RT_F_EXP_QUANTA 0x00000002
+#define RT_F_RUNNING            0x00000000
+#define RT_F_SLEEP              0x00000001
+#define RT_F_EXP_QUANTA         0x00000002
+#define RT_F_NON_PREEMTABLE     0x00000004
 
 
 /*      Realtime utility macros */
@@ -103,6 +106,7 @@ typedef struct task_rt_param {
         ((t)->rt_param.basic_params.class == RT_CLASS_SOFT)
 #define is_be(t)                \
         ((t)->rt_param.basic_params.class == RT_CLASS_BEST_EFFORT)
+#define is_np(t)                ((t)->rt_param.is_non_preemptable)
 
 #define clear_rt_params(t) \
 memset(&(t)->rt_param,0, sizeof(struct task_rt_param))