Better memory management, removed unnecessary preemptions, moved data out of

rt_params and into plugin data, better list managment logic.

2 files changed, 20 insertions, 13 deletions

diff --git a/include/litmus/rt_param.h b/include/litmus/rt_param.h
index 7a28e2b0e3e5..26da5f578a6c 100644
--- a/include/litmus/rt_param.h
+++ b/include/litmus/rt_param.h
@@ -190,11 +190,6 @@ struct rt_param {
          */
         struct list_head list;
 
-        /* Used for slack stealing */
-        struct list_head slack_list;
-        struct server *slack_server;
-        int slack_candidate;
-
         /* Pointer to the page shared between userspace and kernel. */
         struct control_page * ctrl_page;
 
diff --git a/include/litmus/servers.h b/include/litmus/servers.h
index 3de9df6e804a..97fd0ce76207 100644
--- a/include/litmus/servers.h
+++ b/include/litmus/servers.h
@@ -97,6 +97,8 @@ typedef struct server_domain {
         server_completed_t              server_completed;
         servers_released_t              servers_released;
 
+        struct kmem_cache *server_release_cache;
+
         raw_spinlock_t          tobe_lock;
         struct list_head        tobe_released;
 } server_domain_t;
@@ -116,31 +118,41 @@ typedef struct server_release_heap {
         server_domain_t        *domain;
 } server_release_heap_t;
 
+/*
+ * Initialize and exit servers
+ */
 void server_init(server_t *server, int id,
                  lt_t wcet, lt_t period, int grouped);
 void server_destroy(server_t *server);
 
+/*
+ * Memory manage servers on the module slabs.
+ */
+server_t* server_alloc(int gfp_flags);
+void server_free(server_t *server);
+
+/*
+ * Initialize and exit the server domain.
+ */
 void server_domain_init(server_domain_t *domain,
                         servers_released_t servers_released,
                         server_completed_t server_completed,
                         int release_master, raw_spinlock_t* timer_lock);
-void server_domain_exit(server_domain_t *domain);
+void server_domain_destroy(server_domain_t *domain);
 
+/*
+ * Adds the next release of the server to the domain's timer.
+ */
 int add_server_release(server_t *server, server_domain_t *server_domain);
 
 /*
- * Runs a task on the server. If the server runs out of budget
- * before the task finishes executing, the server will set its
- * budget to 0 and call post_completion. If task is NULL, the server
- * will just run on the current CPU.
+ * Runs a task on the server.
  */
 void server_run(server_t *server, struct task_struct *task,
                 server_domain_t *server_domain);
 
 /*
- * Stops server execution. This will decrement the budget
- * by the amount of time since server_run_task was called, based
- * on the task execution time or current time, if task was NULL.
+ * Stops server execution.
  */
 void server_stop(server_t *server, server_domain_t *domain);