1 files changed, 57 insertions, 0 deletions

diff --git a/include/linux/taskstats_kern.h b/include/linux/taskstats_kern.h
new file mode 100644
index 000000000000..bd0ecb969c26
--- /dev/null
+++ b/include/linux/taskstats_kern.h
@@ -0,0 +1,57 @@
+/* taskstats_kern.h - kernel header for per-task statistics interface
+ *
+ * Copyright (C) Shailabh Nagar, IBM Corp. 2006
+ *           (C) Balbir Singh,   IBM Corp. 2006
+ */
+
+#ifndef _LINUX_TASKSTATS_KERN_H
+#define _LINUX_TASKSTATS_KERN_H
+
+#include <linux/taskstats.h>
+#include <linux/sched.h>
+
+enum {
+        TASKSTATS_MSG_UNICAST,          /* send data only to requester */
+        TASKSTATS_MSG_MULTICAST,        /* send data to a group */
+};
+
+#ifdef CONFIG_TASKSTATS
+extern kmem_cache_t *taskstats_cache;
+
+static inline void taskstats_exit_alloc(struct taskstats **ptidstats,
+                                        struct taskstats **ptgidstats)
+{
+        *ptidstats = kmem_cache_zalloc(taskstats_cache, SLAB_KERNEL);
+        *ptgidstats = kmem_cache_zalloc(taskstats_cache, SLAB_KERNEL);
+}
+
+static inline void taskstats_exit_free(struct taskstats *tidstats,
+                                        struct taskstats *tgidstats)
+{
+        if (tidstats)
+                kmem_cache_free(taskstats_cache, tidstats);
+        if (tgidstats)
+                kmem_cache_free(taskstats_cache, tgidstats);
+}
+
+extern void taskstats_exit_send(struct task_struct *, struct taskstats *,
+                                struct taskstats *);
+extern void taskstats_init_early(void);
+
+#else
+static inline void taskstats_exit_alloc(struct taskstats **ptidstats,
+                                        struct taskstats **ptgidstats)
+{}
+static inline void taskstats_exit_free(struct taskstats *ptidstats,
+                                        struct taskstats *ptgidstats)
+{}
+static inline void taskstats_exit_send(struct task_struct *tsk,
+                                        struct taskstats *tidstats,
+                                        struct taskstats *tgidstats)
+{}
+static inline void taskstats_init_early(void)
+{}
+#endif /* CONFIG_TASKSTATS */
+
+#endif
+