Tracepoint and TRACEPOINT_EVENT API cleanup

[ust.git] / include / ust / tracepoint-internal.h

diff --git a/include/ust/tracepoint-internal.h b/include/ust/tracepoint-internal.h
new file mode 100644 (file)
index 0000000..6fcc491
--- /dev/null
+++ b/include/ust/tracepoint-internal.h
@@ -0,0 +1,86 @@
+#ifndef _UST_TRACEPOINT_INTERNAL_H
+#define _UST_TRACEPOINT_INTERNAL_H
+
+/*
+ * tracepoint-internal.h
+ *
+ * Tracepoint internal header.
+ *
+ * Copyright (C) 2008 Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
+ * Copyright (C) 2009 Pierre-Marc Fournier
+ * Copyright (C) 2009 Steven Rostedt <rostedt@goodmis.org>
+ *
+ * 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;
+ * version 2.1 of the License.
+ *
+ * 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 <urcu-bp.h>
+#include <ust/core.h>
+#include <urcu/list.h>
+
+extern void tracepoint_update_probe_range(struct tracepoint * const *begin,
+       struct tracepoint * const *end);
+
+extern int tracepoint_probe_register_noupdate(const char *name, void *probe,
+                                             void *data);
+extern int tracepoint_probe_unregister_noupdate(const char *name, void *probe,
+                                               void *data);
+extern void tracepoint_probe_update_all(void);
+
+struct tracepoint_iter {
+       struct tracepoint_lib *lib;
+       struct tracepoint * const *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 * const **tracepoint,
+       struct tracepoint * const *begin, struct tracepoint * const *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_rcu();
+}
+
+extern void lock_trace_events(void);
+extern void unlock_trace_events(void);
+
+struct trace_event_iter {
+       struct trace_event_lib *lib;
+       struct trace_event * const *trace_event;
+};
+
+extern void trace_event_iter_start(struct trace_event_iter *iter);
+extern void trace_event_iter_next(struct trace_event_iter *iter);
+extern void trace_event_iter_reset(struct trace_event_iter *iter);
+
+extern int trace_event_get_iter_range(struct trace_event * const **trace_event,
+                                     struct trace_event * const *begin,
+                                     struct trace_event * const *end);
+
+extern void trace_event_update_process(void);
+extern int is_trace_event_enabled(const char *channel, const char *name);
+
+#endif /* _UST_TRACEPOINT_INTERNAL_H */