--- /dev/null
+#ifndef _LINUX_TRACEPOINT_H
+#define _LINUX_TRACEPOINT_H
+
+/*
+ * Copyright (C) 2008 Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
+ * Copyright (C) 2009 Pierre-Marc Fournier
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Heavily inspired from the Linux Kernel Markers.
+ *
+ * Ported to userspace by Pierre-Marc Fournier.
+ */
+
+//#include <linux/immediate.h>
+//#include <linux/types.h>
+//#include <linux/rcupdate.h>
+
+#include "immediate.h"
+#include "kernelcompat.h"
+
+struct module;
+struct tracepoint;
+
+struct tracepoint {
+ const char *name; /* Tracepoint name */
+ DEFINE_IMV(char, state); /* State. */
+ void **funcs;
+} __attribute__((aligned(32))); /*
+ * Aligned on 32 bytes because it is
+ * globally visible and gcc happily
+ * align these on the structure size.
+ * Keep in sync with vmlinux.lds.h.
+ */
+
+#define TPPROTO(args...) args
+#define TPARGS(args...) args
+
+//ust// #ifdef CONFIG_TRACEPOINTS
+
+/*
+ * it_func[0] is never NULL because there is at least one element in the array
+ * when the array itself is non NULL.
+ */
+#define __DO_TRACE(tp, proto, args) \
+ do { \
+ void **it_func; \
+ \
+ rcu_read_lock_sched_notrace(); \
+ it_func = rcu_dereference((tp)->funcs); \
+ if (it_func) { \
+ do { \
+ ((void(*)(proto))(*it_func))(args); \
+ } while (*(++it_func)); \
+ } \
+ rcu_read_unlock_sched_notrace(); \
+ } while (0)
+
+#define __CHECK_TRACE(name, generic, proto, args) \
+ do { \
+ if (!generic) { \
+ if (unlikely(imv_read(__tracepoint_##name.state))) \
+ __DO_TRACE(&__tracepoint_##name, \
+ TPPROTO(proto), TPARGS(args)); \
+ } else { \
+ if (unlikely(_imv_read(__tracepoint_##name.state))) \
+ __DO_TRACE(&__tracepoint_##name, \
+ TPPROTO(proto), TPARGS(args)); \
+ } \
+ } while (0)
+
+/*
+ * Make sure the alignment of the structure in the __tracepoints 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.
+ *
+ * The "generic" argument, passed to the declared __trace_##name inline
+ * function controls which tracepoint enabling mechanism must be used.
+ * If generic is true, a variable read is used.
+ * If generic is false, immediate values are used.
+ */
+#define DECLARE_TRACE(name, proto, args) \
+ extern struct tracepoint __tracepoint_##name; \
+ static inline void trace_##name(proto) \
+ { \
+ __CHECK_TRACE(name, 0, TPPROTO(proto), TPARGS(args)); \
+ } \
+ static inline void _trace_##name(proto) \
+ { \
+ __CHECK_TRACE(name, 1, TPPROTO(proto), TPARGS(args)); \
+ } \
+ static inline int register_trace_##name(void (*probe)(proto)) \
+ { \
+ return tracepoint_probe_register(#name, (void *)probe); \
+ } \
+ static inline int unregister_trace_##name(void (*probe)(proto)) \
+ { \
+ return tracepoint_probe_unregister(#name, (void *)probe);\
+ }
+
+#define DEFINE_TRACE(name) \
+ static const char __tpstrtab_##name[] \
+ __attribute__((section("__tracepoints_strings"))) = #name; \
+ struct tracepoint __tracepoint_##name \
+ __attribute__((section("__tracepoints"), aligned(32))) = \
+ { __tpstrtab_##name, 0, NULL }
+
+#define EXPORT_TRACEPOINT_SYMBOL_GPL(name) \
+ EXPORT_SYMBOL_GPL(__tracepoint_##name)
+#define EXPORT_TRACEPOINT_SYMBOL(name) \
+ EXPORT_SYMBOL(__tracepoint_##name)
+
+extern void tracepoint_update_probe_range(struct tracepoint *begin,
+ struct tracepoint *end);
+
+//ust// #else /* !CONFIG_TRACEPOINTS */
+//ust// #define DECLARE_TRACE(name, proto, args) \
+//ust// static inline void trace_##name(proto) \
+//ust// { } \
+//ust// static inline void _trace_##name(proto) \
+//ust// { } \
+//ust// static inline int register_trace_##name(void (*probe)(proto)) \
+//ust// { \
+//ust// return -ENOSYS; \
+//ust// } \
+//ust// static inline int unregister_trace_##name(void (*probe)(proto)) \
+//ust// { \
+//ust// return -ENOSYS; \
+//ust// }
+//ust//
+//ust// #define DEFINE_TRACE(name)
+//ust// #define EXPORT_TRACEPOINT_SYMBOL_GPL(name)
+//ust// #define EXPORT_TRACEPOINT_SYMBOL(name)
+//ust//
+//ust// static inline void tracepoint_update_probe_range(struct tracepoint *begin,
+//ust// struct tracepoint *end)
+//ust// { }
+//ust// #endif /* CONFIG_TRACEPOINTS */
+
+/*
+ * Connect a probe to a tracepoint.
+ * Internal API, should not be used directly.
+ */
+extern int tracepoint_probe_register(const char *name, void *probe);
+
+/*
+ * Disconnect a probe from a tracepoint.
+ * Internal API, should not be used directly.
+ */
+extern int tracepoint_probe_unregister(const char *name, void *probe);
+
+extern int tracepoint_probe_register_noupdate(const char *name, void *probe);
+extern int tracepoint_probe_unregister_noupdate(const char *name, void *probe);
+extern void tracepoint_probe_update_all(void);
+
+struct tracepoint_iter {
+//ust// struct module *module;
+ struct tracepoint_lib *lib;
+ struct tracepoint *tracepoint;
+};
+
+extern void tracepoint_iter_start(struct tracepoint_iter *iter);
+extern void tracepoint_iter_next(struct tracepoint_iter *iter);
+extern void tracepoint_iter_stop(struct tracepoint_iter *iter);
+extern void tracepoint_iter_reset(struct tracepoint_iter *iter);
+extern int tracepoint_get_iter_range(struct tracepoint **tracepoint,
+ struct tracepoint *begin, struct tracepoint *end);
+
+/*
+ * tracepoint_synchronize_unregister must be called between the last tracepoint
+ * probe unregistration and the end of module exit to make sure there is no
+ * caller executing a probe when it is freed.
+ */
+static inline void tracepoint_synchronize_unregister(void)
+{
+ synchronize_sched();
+}
+
+struct tracepoint_lib {
+ struct tracepoint *tracepoints_start;
+ int tracepoints_count;
+ struct list_head list;
+};
+
+#define TRACEPOINT_LIB \
+extern struct tracepoint __start___tracepoints[] __attribute__((visibility("hidden"))); \
+extern struct tracepoint __stop___tracepoints[] __attribute__((visibility("hidden"))); \
+ \
+static void __attribute__((constructor)) __tracepoints__init(void) \
+{ \
+ tracepoint_register_lib(__start___tracepoints, (((long)__stop___tracepoints)-((long)__start___tracepoints))/sizeof(struct tracepoint));\
+}
+#endif
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