--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/include/linux/profile.h	Sun Jan 11 20:20:11 2009 +0100
@@ -0,0 +1,150 @@
+#ifndef _LINUX_PROFILE_H
+#define _LINUX_PROFILE_H
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/cpumask.h>
+#include <linux/cache.h>
+
+#include <asm/errno.h>
+
+#define CPU_PROFILING	1
+#define SCHED_PROFILING	2
+#define SLEEP_PROFILING	3
+#define KVM_PROFILING	4
+
+struct proc_dir_entry;
+struct pt_regs;
+struct notifier_block;
+
+#if defined(CONFIG_PROFILING) && defined(CONFIG_PROC_FS)
+void create_prof_cpu_mask(struct proc_dir_entry *de);
+int create_proc_profile(void);
+#else
+static inline void create_prof_cpu_mask(struct proc_dir_entry *de)
+{
+}
+
+static inline int create_proc_profile(void)
+{
+	return 0;
+}
+#endif
+
+enum profile_type {
+	PROFILE_TASK_EXIT,
+	PROFILE_MUNMAP
+};
+
+#ifdef CONFIG_PROFILING
+
+extern int prof_on __read_mostly;
+
+/* init basic kernel profiler */
+int profile_init(void);
+int profile_setup(char *str);
+void profile_tick(int type);
+
+/*
+ * Add multiple profiler hits to a given address:
+ */
+void profile_hits(int type, void *ip, unsigned int nr_hits);
+
+/*
+ * Single profiler hit:
+ */
+static inline void profile_hit(int type, void *ip)
+{
+	/*
+	 * Speedup for the common (no profiling enabled) case:
+	 */
+	if (unlikely(prof_on == type))
+		profile_hits(type, ip, 1);
+}
+
+struct task_struct;
+struct mm_struct;
+
+/* task is in do_exit() */
+void profile_task_exit(struct task_struct * task);
+
+/* task is dead, free task struct ? Returns 1 if
+ * the task was taken, 0 if the task should be freed.
+ */
+int profile_handoff_task(struct task_struct * task);
+
+/* sys_munmap */
+void profile_munmap(unsigned long addr);
+
+int task_handoff_register(struct notifier_block * n);
+int task_handoff_unregister(struct notifier_block * n);
+
+int profile_event_register(enum profile_type, struct notifier_block * n);
+int profile_event_unregister(enum profile_type, struct notifier_block * n);
+
+int register_timer_hook(int (*hook)(struct pt_regs *));
+void unregister_timer_hook(int (*hook)(struct pt_regs *));
+
+struct pt_regs;
+
+#else
+
+#define prof_on 0
+
+static inline int profile_init(void)
+{
+	return 0;
+}
+
+static inline void profile_tick(int type)
+{
+	return;
+}
+
+static inline void profile_hits(int type, void *ip, unsigned int nr_hits)
+{
+	return;
+}
+
+static inline void profile_hit(int type, void *ip)
+{
+	return;
+}
+
+static inline int task_handoff_register(struct notifier_block * n)
+{
+	return -ENOSYS;
+}
+
+static inline int task_handoff_unregister(struct notifier_block * n)
+{
+	return -ENOSYS;
+}
+
+static inline int profile_event_register(enum profile_type t, struct notifier_block * n)
+{
+	return -ENOSYS;
+}
+
+static inline int profile_event_unregister(enum profile_type t, struct notifier_block * n)
+{
+	return -ENOSYS;
+}
+
+#define profile_task_exit(a) do { } while (0)
+#define profile_handoff_task(a) (0)
+#define profile_munmap(a) do { } while (0)
+
+static inline int register_timer_hook(int (*hook)(struct pt_regs *))
+{
+	return -ENOSYS;
+}
+
+static inline void unregister_timer_hook(int (*hook)(struct pt_regs *))
+{
+	return;
+}
+
+#endif /* CONFIG_PROFILING */
+
+#endif /* _LINUX_PROFILE_H */