+++ /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 library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; 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>
-
-#define _LGPL_SOURCE
-#include <urcu-bp.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
-
-#define CONFIG_TRACEPOINTS
-#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(); /*ust 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(); /*ust 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);
-
-#else /* !CONFIG_TRACEPOINTS */
-#define DECLARE_TRACE(name, proto, args) \
- static inline void trace_##name(proto) \
- { } \
- static inline void _trace_##name(proto) \
- { } \
- static inline int register_trace_##name(void (*probe)(proto)) \
- { \
- return -ENOSYS; \
- } \
- static inline int unregister_trace_##name(void (*probe)(proto)) \
- { \
- return -ENOSYS; \
- }
-
-#define DEFINE_TRACE(name)
-#define EXPORT_TRACEPOINT_SYMBOL_GPL(name)
-#define EXPORT_TRACEPOINT_SYMBOL(name)
-
-static inline void tracepoint_update_probe_range(struct tracepoint *begin,
- struct tracepoint *end)
-{ }
-#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)
-{
-//ust// synchronize_sched();
-}
-
-struct tracepoint_lib {
- struct tracepoint *tracepoints_start;
- int tracepoints_count;
- struct list_head list;
-};
-
-extern int tracepoint_register_lib(struct tracepoint *tracepoints_start,
- int tracepoints_count);
-
-#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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