Add object descriptor table to Linux's task_struct

This table is similar to a file descriptor table. It keeps track of
which "objects" (locks) a real-time task holds a handle to.

1 files changed, 4 insertions, 0 deletions

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 067a2383ee68..3e6e669db92b 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1283,6 +1283,7 @@ union rcu_special {
         short s;
 };
 struct rcu_node;
+struct od_table_entry;
 
 enum perf_event_task_context {
         perf_invalid_context = -1,
@@ -1676,6 +1677,9 @@ struct task_struct {
         /* LITMUS RT parameters and state */
         struct rt_param rt_param;
 
+        /* references to PI semaphores, etc. */
+        struct od_table_entry *od_table;
+
 #ifdef CONFIG_LATENCYTOP
         int latency_record_count;
         struct latency_record latency_record[LT_SAVECOUNT];