-#ifndef _LTTNG_EVENTS_H
-#define _LTTNG_EVENTS_H
-
-/*
+/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
+ *
* lttng-events.h
*
* Holds LTTng per-session event registry.
*
* 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
*/
+#ifndef _LTTNG_EVENTS_H
+#define _LTTNG_EVENTS_H
+
#include <linux/version.h>
#include <linux/list.h>
#include <linux/kprobes.h>
#include <linux/kref.h>
#include <lttng-cpuhotplug.h>
-#include <wrapper/uuid.h>
+#include <linux/uuid.h>
+#include <wrapper/uprobes.h>
#include <lttng-tracer.h>
#include <lttng-abi.h>
#include <lttng-abi-old.h>
atype_array_compound, /* Array of compound types. */
atype_sequence_compound, /* Sequence of compound types. */
atype_variant,
+ atype_array_bitfield,
+ atype_sequence_bitfield,
NR_ABSTRACT_TYPES,
};
struct lttng_ctx_field {
struct lttng_event_field event_field;
size_t (*get_size)(size_t offset);
+ size_t (*get_size_arg)(size_t offset, struct lttng_ctx_field *field,
+ struct lib_ring_buffer_ctx *ctx,
+ struct lttng_channel *chan);
void (*record)(struct lttng_ctx_field *field,
struct lib_ring_buffer_ctx *ctx,
struct lttng_channel *chan);
struct lttng_perf_counter_field *perf_counter;
} u;
void (*destroy)(struct lttng_ctx_field *field);
+ /*
+ * Private data to keep state between get_size and record.
+ * User must perform its own synchronization to protect against
+ * concurrent and reentrant contexts.
+ */
+ void *priv;
};
struct lttng_ctx {
const char *filter_stack_data);
int link_failed;
struct list_head node; /* list of bytecode runtime in event */
+ struct lttng_event *event;
};
/*
struct lttng_enabler *ref; /* backward ref */
};
+struct lttng_uprobe_handler {
+ struct lttng_event *event;
+ loff_t offset;
+ struct uprobe_consumer up_consumer;
+ struct list_head node;
+};
+
/*
* lttng_event structure is referred to by the tracing fast path. It must be
* kept small.
struct {
char *symbol_name;
} ftrace;
+ struct {
+ struct inode *inode;
+ struct list_head head;
+ } uprobe;
} u;
struct list_head list; /* Event list in session */
unsigned int metadata_dumped:1;
struct list_head enablers_head;
/* Hash table of events */
struct lttng_event_ht events_ht;
+ char name[LTTNG_KERNEL_SESSION_NAME_LEN];
+ char creation_time[LTTNG_KERNEL_SESSION_CREATION_TIME_ISO8601_LEN];
};
struct lttng_metadata_cache {
return -ENOSYS;
}
#endif
-#if defined(CONFIG_PERF_EVENTS) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33))
+
+int lttng_add_callstack_to_ctx(struct lttng_ctx **ctx, int type);
+
+#if defined(CONFIG_CGROUPS) && \
+ ((LINUX_VERSION_CODE >= KERNEL_VERSION(4,6,0)) || \
+ LTTNG_UBUNTU_KERNEL_RANGE(4,4,0,0, 4,5,0,0))
+int lttng_add_cgroup_ns_to_ctx(struct lttng_ctx **ctx);
+#else
+static inline
+int lttng_add_cgroup_ns_to_ctx(struct lttng_ctx **ctx)
+{
+ return -ENOSYS;
+}
+#endif
+
+#if defined(CONFIG_IPC_NS) && \
+ (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0))
+int lttng_add_ipc_ns_to_ctx(struct lttng_ctx **ctx);
+#else
+static inline
+int lttng_add_ipc_ns_to_ctx(struct lttng_ctx **ctx)
+{
+ return -ENOSYS;
+}
+#endif
+
+#if !defined(LTTNG_MNT_NS_MISSING_HEADER) && \
+ (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0))
+int lttng_add_mnt_ns_to_ctx(struct lttng_ctx **ctx);
+#else
+static inline
+int lttng_add_mnt_ns_to_ctx(struct lttng_ctx **ctx)
+{
+ return -ENOSYS;
+}
+#endif
+
+#if defined(CONFIG_NET_NS) && \
+ (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0))
+int lttng_add_net_ns_to_ctx(struct lttng_ctx **ctx);
+#else
+static inline
+int lttng_add_net_ns_to_ctx(struct lttng_ctx **ctx)
+{
+ return -ENOSYS;
+}
+#endif
+
+#if defined(CONFIG_PID_NS) && \
+ (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0))
+int lttng_add_pid_ns_to_ctx(struct lttng_ctx **ctx);
+#else
+static inline
+int lttng_add_pid_ns_to_ctx(struct lttng_ctx **ctx)
+{
+ return -ENOSYS;
+}
+#endif
+
+#if defined(CONFIG_USER_NS) && \
+ (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0))
+int lttng_add_user_ns_to_ctx(struct lttng_ctx **ctx);
+#else
+static inline
+int lttng_add_user_ns_to_ctx(struct lttng_ctx **ctx)
+{
+ return -ENOSYS;
+}
+#endif
+
+#if defined(CONFIG_UTS_NS) && \
+ (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0))
+int lttng_add_uts_ns_to_ctx(struct lttng_ctx **ctx);
+#else
+static inline
+int lttng_add_uts_ns_to_ctx(struct lttng_ctx **ctx)
+{
+ return -ENOSYS;
+}
+#endif
+
+int lttng_add_uid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_euid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_suid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_gid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_egid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_sgid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_vuid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_veuid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_vsuid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_vgid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_vegid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_vsgid_to_ctx(struct lttng_ctx **ctx);
+
+#if defined(CONFIG_PERF_EVENTS)
int lttng_add_perf_counter_to_ctx(uint32_t type,
uint64_t config,
const char *name,
}
#endif
+int lttng_event_add_callsite(struct lttng_event *event,
+ struct lttng_kernel_event_callsite *callsite);
+
+#ifdef CONFIG_UPROBES
+int lttng_uprobes_register(const char *name,
+ int fd, struct lttng_event *event);
+int lttng_uprobes_add_callsite(struct lttng_event *event,
+ struct lttng_kernel_event_callsite *callsite);
+void lttng_uprobes_unregister(struct lttng_event *event);
+void lttng_uprobes_destroy_private(struct lttng_event *event);
+#else
+static inline
+int lttng_uprobes_register(const char *name,
+ int fd, struct lttng_event *event)
+{
+ return -ENOSYS;
+}
+
+static inline
+int lttng_uprobes_add_callsite(struct lttng_event *event,
+ struct lttng_kernel_event_callsite *callsite)
+{
+ return -ENOSYS;
+}
+
+static inline
+void lttng_uprobes_unregister(struct lttng_event *event)
+{
+}
+
+static inline
+void lttng_uprobes_destroy_private(struct lttng_event *event)
+{
+}
+#endif
+
#ifdef CONFIG_KRETPROBES
int lttng_kretprobes_register(const char *name,
const char *symbol_name,
extern const struct file_operations lttng_tracepoint_list_fops;
extern const struct file_operations lttng_syscall_list_fops;
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
#define TRACEPOINT_HAS_DATA_ARG
-#endif
#endif /* _LTTNG_EVENTS_H */
projects / lttng-modules.git / blobdiff