SoW-2019-0002: Dynamic Snapshot

[lttng-tools.git] / src / common / lttng-kernel.h

diff --git a/src/common/lttng-kernel.h b/src/common/lttng-kernel.h
index 151137004e2f026e15b04c84f5c9e1ff72c94dbb..62e784eb61c3418a9f9aefcb2101c9ee4ceeec25 100644 (file)
--- a/src/common/lttng-kernel.h
+++ b/src/common/lttng-kernel.h
@@ -1,20 +1,10 @@
 /*
- * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca>
- *                      Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *                      David Goulet <david.goulet@polymtl.ca>
+ * Copyright (C) 2011 Julien Desfossez <julien.desfossez@polymtl.ca>
+ * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, version 2 only,
- * as published by the Free Software Foundation.
+ * SPDX-License-Identifier: GPL-2.0-only
  *
- * 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.
  */
 
 #ifndef _LTTNG_KERNEL_H
@@ -160,6 +150,24 @@ struct lttng_kernel_event {
        } u;
 } LTTNG_PACKED;
 
+#define LTTNG_KERNEL_TRIGGER_PADDING1  16
+#define LTTNG_KERNEL_TRIGGER_PADDING2  LTTNG_KERNEL_SYM_NAME_LEN + 32
+struct lttng_kernel_trigger {
+       uint64_t id;
+       char name[LTTNG_KERNEL_SYM_NAME_LEN];   /* event name */
+       enum lttng_kernel_instrumentation instrumentation;
+       char padding[LTTNG_KERNEL_TRIGGER_PADDING1];
+
+       /* Per instrumentation type configuration */
+       union {
+               struct lttng_kernel_kretprobe kretprobe;
+               struct lttng_kernel_kprobe kprobe;
+               struct lttng_kernel_uprobe uprobe;
+               struct lttng_kernel_function ftrace;
+               char padding[LTTNG_KERNEL_TRIGGER_PADDING2];
+       } u;
+} LTTNG_PACKED;
+
 struct lttng_kernel_tracer_version {
        uint32_t major;
        uint32_t minor;