Add admission check

2 files changed, 9 insertions, 0 deletions

diff --git a/litmus/Kconfig b/litmus/Kconfig
index 81daf35d9432..6e0f77c3bb8f 100644
--- a/litmus/Kconfig
+++ b/litmus/Kconfig
@@ -375,6 +375,7 @@ endmenu
 config PGMRT_SUPPORT
     bool "Support for PGM^RT API"
     default y
+    depends on LITMUS_LOCKING && ALLOW_EARLY_RELEASE
     help
       This option enables support for PGM^RT API. The source code of PGM^RT
       can be found https://github.com/GElliott/pgm . This option adds some
diff --git a/litmus/litmus.c b/litmus/litmus.c
index 702999191203..0f122e1e7ec1 100644
--- a/litmus/litmus.c
+++ b/litmus/litmus.c
@@ -168,6 +168,14 @@ asmlinkage long sys_set_rt_task_param(pid_t pid, struct rt_task __user * param)
                        pid, tp.budget_policy);
                 goto out_unlock;
         }
+#ifdef CONFIG_PGMRT_SUPPORT
+        if (tp.pgm_type < PGM_NOT_A_NODE || tp.pgm_type > PGM_INTERNAL) {
+                printk(KERN_INFO "litmus: real-time task %d rejected "
+                                "because of unknown PGM node type specified (%d)\n",
+                                pid, tp.pgm_type);
+                goto out_unlock;
+        }
+#endif
 
         target->rt_param.task_params = tp;