kernel: event notifier: kernel-ctl interface

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

diff --git a/src/common/lttng-kernel.h b/src/common/lttng-kernel.h
index 4008b50cf6d2999fbe987a8d81fd17d49eda95fb..cd343bb766c81ea39f7f2ae8dbcd6de058954679 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
@@ -85,6 +75,7 @@ enum lttng_kernel_context_type {
        LTTNG_KERNEL_CONTEXT_VGID           = 34,
        LTTNG_KERNEL_CONTEXT_VEGID          = 35,
        LTTNG_KERNEL_CONTEXT_VSGID          = 36,
+       LTTNG_KERNEL_CONTEXT_TIME_NS        = 37,
 };
 
 /* Perf counter attributes */
@@ -138,28 +129,67 @@ struct lttng_kernel_event_callsite {
        } u;
 } LTTNG_PACKED;
 
+enum lttng_kernel_syscall_entryexit {
+       LTTNG_KERNEL_SYSCALL_ENTRYEXIT  = 0,
+       LTTNG_KERNEL_SYSCALL_ENTRY      = 1,
+       LTTNG_KERNEL_SYSCALL_EXIT       = 2,
+};
+
+enum lttng_kernel_syscall_abi {
+       LTTNG_KERNEL_SYSCALL_ABI_ALL    = 0,
+       LTTNG_KERNEL_SYSCALL_ABI_NATIVE = 1,
+       LTTNG_KERNEL_SYSCALL_ABI_COMPAT = 2,
+};
+
+enum lttng_kernel_syscall_match {
+       LTTNG_KERNEL_SYSCALL_MATCH_NAME = 0,
+       LTTNG_KERNEL_SYSCALL_MATCH_NR   = 1,
+};
+
+struct lttng_kernel_syscall {
+       uint8_t entryexit;      /* enum lttng_kernel_syscall_entryexit */
+       uint8_t abi;            /* enum lttng_kernel_syscall_abi */
+       uint8_t match;          /* enum lttng_kernel_syscall_match */
+       uint8_t padding;
+       uint32_t nr;            /* For LTTNG_SYSCALL_MATCH_NR */
+} LTTNG_PACKED;
+
 /* Function tracer */
 struct lttng_kernel_function {
        char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
 } LTTNG_PACKED;
 
-#define LTTNG_KERNEL_EVENT_PADDING1    16
+#define LTTNG_KERNEL_EVENT_PADDING1    8
 #define LTTNG_KERNEL_EVENT_PADDING2    LTTNG_KERNEL_SYM_NAME_LEN + 32
 struct lttng_kernel_event {
        char name[LTTNG_KERNEL_SYM_NAME_LEN];
        enum lttng_kernel_instrumentation instrumentation;
+       uint64_t token;
        char padding[LTTNG_KERNEL_EVENT_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;
+               struct lttng_kernel_uprobe uprobe;
+               struct lttng_kernel_syscall syscall;
                char padding[LTTNG_KERNEL_EVENT_PADDING2];
        } u;
 } LTTNG_PACKED;
 
+#define LTTNG_KERNEL_EVENT_NOTIFIER_PADDING    40
+struct lttng_kernel_event_notifier {
+       struct lttng_kernel_event event;
+       char padding[LTTNG_KERNEL_EVENT_NOTIFIER_PADDING];
+} LTTNG_PACKED;
+
+#define LTTNG_KERNEL_EVENT_NOTIFIER_NOTIFICATION_PADDING 34
+struct lttng_kernel_event_notifier_notification {
+       uint64_t token;
+       char padding[LTTNG_KERNEL_EVENT_NOTIFIER_NOTIFICATION_PADDING];
+} LTTNG_PACKED;
+
 struct lttng_kernel_tracer_version {
        uint32_t major;
        uint32_t minor;
@@ -213,4 +243,20 @@ struct lttng_kernel_session_creation_time {
        char iso8601[LTTNG_KERNEL_SESSION_CREATION_TIME_ISO8601_LEN];
 } LTTNG_PACKED;
 
+enum lttng_kernel_tracker_type {
+       LTTNG_KERNEL_TRACKER_UNKNOWN            = -1,
+
+       LTTNG_KERNEL_TRACKER_PID                = 0,
+       LTTNG_KERNEL_TRACKER_VPID               = 1,
+       LTTNG_KERNEL_TRACKER_UID                = 2,
+       LTTNG_KERNEL_TRACKER_VUID               = 3,
+       LTTNG_KERNEL_TRACKER_GID                = 4,
+       LTTNG_KERNEL_TRACKER_VGID               = 5,
+};
+
+struct lttng_kernel_tracker_args {
+       enum lttng_kernel_tracker_type type;
+       int32_t id;
+};
+
 #endif /* _LTTNG_KERNEL_H */