--- /dev/null
+#ifndef _LINUX_MARKER_H
+#define _LINUX_MARKER_H
+
+/*
+ * Code markup for dynamic and static tracing.
+ *
+ * See Documentation/marker.txt.
+ *
+ * (C) Copyright 2006 Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
+ *
+ * This file is released under the GPLv2.
+ * See the file COPYING for more details.
+ */
+
+//#include <linux/immediate.h>
+//#include <linux/types.h>
+
+#include "kernel-api.h"
+#include <stdint.h>
+#include <stdarg.h>
+
+struct module;
+struct marker;
+
+/**
+ * marker_probe_func - Type of a marker probe function
+ * @probe_private: probe private data
+ * @call_private: call site private data
+ * @fmt: format string
+ * @args: variable argument list pointer. Use a pointer to overcome C's
+ * inability to pass this around as a pointer in a portable manner in
+ * the callee otherwise.
+ *
+ * Type of marker probe functions. They receive the mdata and need to parse the
+ * format string to recover the variable argument list.
+ */
+typedef void marker_probe_func(void *probe_private, void *call_private,
+ const char *fmt, va_list *args);
+
+struct marker_probe_closure {
+ marker_probe_func *func; /* Callback */
+ void *probe_private; /* Private probe data */
+};
+
+struct marker {
+ const char *name; /* Marker name */
+ const char *format; /* Marker format string, describing the
+ * variable argument list.
+ */
+ DEFINE_IMV(char, state);/* Immediate value state. */
+ char ptype; /* probe type : 0 : single, 1 : multi */
+ void (*call)(const struct marker *mdata, /* Probe wrapper */
+ void *call_private, const char *fmt, ...);
+ struct marker_probe_closure single;
+ struct marker_probe_closure *multi;
+} __attribute__((aligned(8)));
+
+#ifdef CONFIG_MARKERS
+
+/*
+ * Generic marker flavor always available.
+ * Note : the empty asm volatile with read constraint is used here instead of a
+ * "used" attribute to fix a gcc 4.1.x bug.
+ * Make sure the alignment of the structure in the __markers section will
+ * not add unwanted padding between the beginning of the section and the
+ * structure. Force alignment to the same alignment as the section start.
+ */
+#define __trace_mark(generic, name, call_private, format, args...) \
+ do { \
+ static const char __mstrtab_##name[] \
+ __attribute__((section("__markers_strings"))) \
+ = #name "\0" format; \
+ static struct marker __mark_##name \
+ __attribute__((section("__markers"), aligned(8))) = \
+ { __mstrtab_##name, &__mstrtab_##name[sizeof(#name)], \
+ 0, 0, marker_probe_cb, \
+ { __mark_empty_function, NULL}, NULL }; \
+ __mark_check_format(format, ## args); \
+ if (!generic) { \
+ if (unlikely(imv_read(__mark_##name.state))) \
+ (*__mark_##name.call) \
+ (&__mark_##name, call_private, \
+ format, ## args); \
+ } else { \
+ if (unlikely(_imv_read(__mark_##name.state))) \
+ (*__mark_##name.call) \
+ (&__mark_##name, call_private, \
+ format, ## args); \
+ } \
+ } while (0)
+
+extern void marker_update_probe_range(struct marker *begin,
+ struct marker *end);
+#else /* !CONFIG_MARKERS */
+#define __trace_mark(generic, name, call_private, format, args...) \
+ __mark_check_format(format, ## args)
+static inline void marker_update_probe_range(struct marker *begin,
+ struct marker *end)
+{ }
+#endif /* CONFIG_MARKERS */
+
+/**
+ * trace_mark - Marker using code patching
+ * @name: marker name, not quoted.
+ * @format: format string
+ * @args...: variable argument list
+ *
+ * Places a marker using optimized code patching technique (imv_read())
+ * to be enabled.
+ */
+#define trace_mark(name, format, args...) \
+ __trace_mark(0, name, NULL, format, ## args)
+
+/**
+ * _trace_mark - Marker using variable read
+ * @name: marker name, not quoted.
+ * @format: format string
+ * @args...: variable argument list
+ *
+ * Places a marker using a standard memory read (_imv_read()) to be
+ * enabled. Should be used for markers in __init and __exit functions and in
+ * lockdep code.
+ */
+#define _trace_mark(name, format, args...) \
+ __trace_mark(1, name, NULL, format, ## args)
+
+/**
+ * MARK_NOARGS - Format string for a marker with no argument.
+ */
+#define MARK_NOARGS " "
+
+/* To be used for string format validity checking with gcc */
+static inline void __attribute__((format (printf, 1, 2)))
+__mark_check_format(const char *fmt, ...)
+{
+}
+
+extern marker_probe_func __mark_empty_function;
+
+extern void marker_probe_cb(const struct marker *mdata,
+ void *call_private, const char *fmt, ...);
+extern void marker_probe_cb_noarg(const struct marker *mdata,
+ void *call_private, const char *fmt, ...);
+
+/*
+ * Connect a probe to a marker.
+ * private data pointer must be a valid allocated memory address, or NULL.
+ */
+extern int marker_probe_register(const char *name, const char *format,
+ marker_probe_func *probe, void *probe_private);
+
+/*
+ * Returns the private data given to marker_probe_register.
+ */
+extern int marker_probe_unregister(const char *name,
+ marker_probe_func *probe, void *probe_private);
+/*
+ * Unregister a marker by providing the registered private data.
+ */
+extern int marker_probe_unregister_private_data(marker_probe_func *probe,
+ void *probe_private);
+
+extern void *marker_get_private_data(const char *name, marker_probe_func *probe,
+ int num);
+
+struct marker_iter {
+ struct module *module;
+ struct marker *marker;
+};
+
+extern void marker_iter_start(struct marker_iter *iter);
+extern void marker_iter_next(struct marker_iter *iter);
+extern void marker_iter_stop(struct marker_iter *iter);
+extern void marker_iter_reset(struct marker_iter *iter);
+extern int marker_get_iter_range(struct marker **marker, struct marker *begin,
+ struct marker *end);
+
+#endif
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