/*
* lttng-abi.h
*
- * Copyright 2010 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
* LTTng ABI header
*
- * Dual LGPL v2.1/GPL v2 license.
+ * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * 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; only
+ * 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
*/
#include <linux/fs.h>
-#define LTTNG_SYM_NAME_LEN 256
+#define LTTNG_KERNEL_SYM_NAME_LEN 256
enum lttng_kernel_instrumentation {
LTTNG_KERNEL_TRACEPOINT = 0,
/*
* LTTng DebugFS ABI structures.
*/
-
+#define LTTNG_KERNEL_CHANNEL_PADDING LTTNG_KERNEL_SYM_NAME_LEN + 32
struct lttng_kernel_channel {
- int overwrite; /* 1: overwrite, 0: discard */
uint64_t subbuf_size; /* in bytes */
uint64_t num_subbuf;
unsigned int switch_timer_interval; /* usecs */
unsigned int read_timer_interval; /* usecs */
enum lttng_kernel_output output; /* splice, mmap */
-};
+ int overwrite; /* 1: overwrite, 0: discard */
+ char padding[LTTNG_KERNEL_CHANNEL_PADDING];
+}__attribute__((packed));
struct lttng_kernel_kretprobe {
uint64_t addr;
uint64_t offset;
- char symbol_name[LTTNG_SYM_NAME_LEN];
-};
+ char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
+}__attribute__((packed));
/*
* Either addr is used, or symbol_name and offset.
uint64_t addr;
uint64_t offset;
- char symbol_name[LTTNG_SYM_NAME_LEN];
-};
+ char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
+}__attribute__((packed));
struct lttng_kernel_function_tracer {
- char symbol_name[LTTNG_SYM_NAME_LEN];
-};
+ char symbol_name[LTTNG_KERNEL_SYM_NAME_LEN];
+}__attribute__((packed));
/*
* For syscall tracing, name = '\0' means "enable all".
*/
+#define LTTNG_KERNEL_EVENT_PADDING1 16
+#define LTTNG_KERNEL_EVENT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
struct lttng_kernel_event {
- char name[LTTNG_SYM_NAME_LEN]; /* event name */
+ char name[LTTNG_KERNEL_SYM_NAME_LEN]; /* event name */
enum lttng_kernel_instrumentation instrumentation;
+ char padding[LTTNG_KERNEL_EVENT_PADDING1];
+
/* Per instrumentation type configuration */
union {
struct lttng_kernel_kretprobe kretprobe;
struct lttng_kernel_kprobe kprobe;
struct lttng_kernel_function_tracer ftrace;
+ char padding[LTTNG_KERNEL_EVENT_PADDING2];
} u;
-};
+}__attribute__((packed));
struct lttng_kernel_tracer_version {
- uint32_t version;
+ uint32_t major;
+ uint32_t minor;
uint32_t patchlevel;
- uint32_t sublevel;
-};
+}__attribute__((packed));
enum lttng_kernel_calibrate_type {
LTTNG_KERNEL_CALIBRATE_KRETPROBE,
struct lttng_kernel_calibrate {
enum lttng_kernel_calibrate_type type; /* type (input) */
-};
+}__attribute__((packed));
enum lttng_kernel_context_type {
LTTNG_KERNEL_CONTEXT_PID = 0,
LTTNG_KERNEL_CONTEXT_VTID = 7,
LTTNG_KERNEL_CONTEXT_PPID = 8,
LTTNG_KERNEL_CONTEXT_VPPID = 9,
+ LTTNG_KERNEL_CONTEXT_HOSTNAME = 10,
};
struct lttng_kernel_perf_counter_ctx {
uint32_t type;
uint64_t config;
- char name[LTTNG_SYM_NAME_LEN];
-};
+ char name[LTTNG_KERNEL_SYM_NAME_LEN];
+}__attribute__((packed));
+#define LTTNG_KERNEL_CONTEXT_PADDING1 16
+#define LTTNG_KERNEL_CONTEXT_PADDING2 LTTNG_KERNEL_SYM_NAME_LEN + 32
struct lttng_kernel_context {
enum lttng_kernel_context_type ctx;
+ char padding[LTTNG_KERNEL_CONTEXT_PADDING1];
+
union {
struct lttng_kernel_perf_counter_ctx perf_counter;
+ char padding[LTTNG_KERNEL_CONTEXT_PADDING2];
} u;
-};
+}__attribute__((packed));
/* LTTng file descriptor ioctl */
-#define LTTNG_KERNEL_SESSION _IO(0xF6, 0x40)
+#define LTTNG_KERNEL_SESSION _IO(0xF6, 0x45)
#define LTTNG_KERNEL_TRACER_VERSION \
- _IOR(0xF6, 0x41, struct lttng_kernel_tracer_version)
-#define LTTNG_KERNEL_TRACEPOINT_LIST _IO(0xF6, 0x42)
-#define LTTNG_KERNEL_WAIT_QUIESCENT _IO(0xF6, 0x43)
+ _IOR(0xF6, 0x46, struct lttng_kernel_tracer_version)
+#define LTTNG_KERNEL_TRACEPOINT_LIST _IO(0xF6, 0x47)
+#define LTTNG_KERNEL_WAIT_QUIESCENT _IO(0xF6, 0x48)
#define LTTNG_KERNEL_CALIBRATE \
- _IOWR(0xF6, 0x44, struct lttng_kernel_calibrate)
+ _IOWR(0xF6, 0x49, struct lttng_kernel_calibrate)
/* Session FD ioctl */
#define LTTNG_KERNEL_METADATA \
- _IOW(0xF6, 0x50, struct lttng_kernel_channel)
+ _IOW(0xF6, 0x54, struct lttng_kernel_channel)
#define LTTNG_KERNEL_CHANNEL \
- _IOW(0xF6, 0x51, struct lttng_kernel_channel)
-#define LTTNG_KERNEL_SESSION_START _IO(0xF6, 0x52)
-#define LTTNG_KERNEL_SESSION_STOP _IO(0xF6, 0x53)
+ _IOW(0xF6, 0x55, struct lttng_kernel_channel)
+#define LTTNG_KERNEL_SESSION_START _IO(0xF6, 0x56)
+#define LTTNG_KERNEL_SESSION_STOP _IO(0xF6, 0x57)
/* Channel FD ioctl */
-#define LTTNG_KERNEL_STREAM _IO(0xF6, 0x60)
+#define LTTNG_KERNEL_STREAM _IO(0xF6, 0x62)
#define LTTNG_KERNEL_EVENT \
- _IOW(0xF6, 0x61, struct lttng_kernel_event)
+ _IOW(0xF6, 0x63, struct lttng_kernel_event)
/* Event and Channel FD ioctl */
#define LTTNG_KERNEL_CONTEXT \
- _IOW(0xF6, 0x70, struct lttng_kernel_context)
+ _IOW(0xF6, 0x71, struct lttng_kernel_context)
/* Event, Channel and Session ioctl */
-#define LTTNG_KERNEL_ENABLE _IO(0xF6, 0x80)
-#define LTTNG_KERNEL_DISABLE _IO(0xF6, 0x81)
+#define LTTNG_KERNEL_ENABLE _IO(0xF6, 0x82)
+#define LTTNG_KERNEL_DISABLE _IO(0xF6, 0x83)
+
+/* LTTng-specific ioctls for the lib ringbuffer */
+/* returns the timestamp begin of the current sub-buffer */
+#define LTTNG_RING_BUFFER_GET_TIMESTAMP_BEGIN _IOR(0xF6, 0x20, uint64_t)
+/* returns the timestamp end of the current sub-buffer */
+#define LTTNG_RING_BUFFER_GET_TIMESTAMP_END _IOR(0xF6, 0x21, uint64_t)
+/* returns the number of events discarded */
+#define LTTNG_RING_BUFFER_GET_EVENTS_DISCARDED _IOR(0xF6, 0x22, uint64_t)
+/* returns the packet payload size */
+#define LTTNG_RING_BUFFER_GET_CONTENT_SIZE _IOR(0xF6, 0x23, uint64_t)
+/* returns the actual packet size */
+#define LTTNG_RING_BUFFER_GET_PACKET_SIZE _IOR(0xF6, 0x24, uint64_t)
+/* returns the stream id */
+#define LTTNG_RING_BUFFER_GET_STREAM_ID _IOR(0xF6, 0x25, uint64_t)
+/* returns the current timestamp */
+#define LTTNG_RING_BUFFER_GET_CURRENT_TIMESTAMP _IOR(0xF6, 0x26, uint64_t)
+
+#ifdef CONFIG_COMPAT
+/* returns the timestamp begin of the current sub-buffer */
+#define LTTNG_RING_BUFFER_COMPAT_GET_TIMESTAMP_BEGIN \
+ LTTNG_RING_BUFFER_GET_TIMESTAMP_BEGIN
+/* returns the timestamp end of the current sub-buffer */
+#define LTTNG_RING_BUFFER_COMPAT_GET_TIMESTAMP_END \
+ LTTNG_RING_BUFFER_GET_TIMESTAMP_END
+/* returns the number of events discarded */
+#define LTTNG_RING_BUFFER_COMPAT_GET_EVENTS_DISCARDED \
+ LTTNG_RING_BUFFER_GET_EVENTS_DISCARDED
+/* returns the packet payload size */
+#define LTTNG_RING_BUFFER_COMPAT_GET_CONTENT_SIZE \
+ LTTNG_RING_BUFFER_GET_CONTENT_SIZE
+/* returns the actual packet size */
+#define LTTNG_RING_BUFFER_COMPAT_GET_PACKET_SIZE \
+ LTTNG_RING_BUFFER_GET_PACKET_SIZE
+/* returns the stream id */
+#define LTTNG_RING_BUFFER_COMPAT_GET_STREAM_ID \
+ LTTNG_RING_BUFFER_GET_STREAM_ID
+/* returns the current timestamp */
+#define LTTNG_RING_BUFFER_COMPAT_GET_CURRENT_TIMESTAMP \
+ LTTNG_RING_BUFFER_GET_CURRENT_TIMESTAMP
+#endif /* CONFIG_COMPAT */
#endif /* _LTTNG_ABI_H */
projects / lttng-modules.git / blobdiff