-#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
*/
-#include <linux/version.h>
+#ifndef _LTTNG_EVENTS_H
+#define _LTTNG_EVENTS_H
+
+#include <lttng-kernel-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 <linux/irq_work.h>
+#include <wrapper/uprobes.h>
#include <lttng-tracer.h>
#include <lttng-abi.h>
#include <lttng-abi-old.h>
-#define lttng_is_signed_type(type) (((type)(-1)) < 0)
+#define lttng_is_signed_type(type) (((type) -1) < (type) 1)
struct lttng_channel;
struct lttng_session;
* lttng_ctx_field because cpu hotplug needs fixed-location addresses.
*/
struct lttng_perf_counter_field {
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0))
+#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0))
struct lttng_cpuhp_node cpuhp_prepare;
struct lttng_cpuhp_node cpuhp_online;
#else
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;
+};
+
+enum lttng_syscall_entryexit {
+ LTTNG_SYSCALL_ENTRY,
+ LTTNG_SYSCALL_EXIT,
+};
+
+enum lttng_syscall_abi {
+ LTTNG_SYSCALL_ABI_NATIVE,
+ LTTNG_SYSCALL_ABI_COMPAT,
+};
+
/*
* lttng_event structure is referred to by the tracing fast path. It must be
* kept small.
char *symbol_name;
} kretprobe;
struct {
- char *symbol_name;
- } ftrace;
+ struct inode *inode;
+ struct list_head head;
+ } uprobe;
+ struct {
+ char *syscall_name;
+ enum lttng_syscall_entryexit entryexit;
+ enum lttng_syscall_abi abi;
+ } syscall;
} u;
struct list_head list; /* Event list in session */
unsigned int metadata_dumped:1;
struct lttng_syscall_filter *sc_filter;
int header_type; /* 0: unset, 1: compact, 2: large */
enum channel_type channel_type;
+ int syscall_all;
unsigned int metadata_dumped:1,
sys_enter_registered:1,
sys_exit_registered:1,
- syscall_all:1,
tstate:1; /* Transient enable state */
};
struct list_head list; /* Stream list */
struct lttng_transport *transport;
uint64_t version; /* Current version of the metadata cache */
+ bool coherent; /* Stream in a coherent state */
};
#define LTTNG_DYNAMIC_LEN_STACK_SIZE 128
DECLARE_PER_CPU(struct lttng_dynamic_len_stack, lttng_dynamic_len_stack);
/*
- * struct lttng_pid_tracker declared in header due to deferencing of *v
+ * struct lttng_id_tracker declared in header due to deferencing of *v
* in RCU_INITIALIZER(v).
*/
-#define LTTNG_PID_HASH_BITS 6
-#define LTTNG_PID_TABLE_SIZE (1 << LTTNG_PID_HASH_BITS)
+#define LTTNG_ID_HASH_BITS 6
+#define LTTNG_ID_TABLE_SIZE (1 << LTTNG_ID_HASH_BITS)
+
+enum tracker_type {
+ TRACKER_PID,
+ TRACKER_VPID,
+ TRACKER_UID,
+ TRACKER_VUID,
+ TRACKER_GID,
+ TRACKER_VGID,
+
+ TRACKER_UNKNOWN,
+};
-struct lttng_pid_tracker {
- struct hlist_head pid_hash[LTTNG_PID_TABLE_SIZE];
+struct lttng_id_tracker_rcu {
+ struct hlist_head id_hash[LTTNG_ID_TABLE_SIZE];
};
-struct lttng_pid_hash_node {
+struct lttng_id_tracker {
+ struct lttng_session *session;
+ enum tracker_type tracker_type;
+ struct lttng_id_tracker_rcu *p; /* RCU dereferenced. */
+};
+
+struct lttng_id_hash_node {
struct hlist_node hlist;
- int pid;
+ int id;
};
struct lttng_session {
unsigned int free_chan_id; /* Next chan ID to allocate */
uuid_le uuid; /* Trace session unique ID */
struct lttng_metadata_cache *metadata_cache;
- struct lttng_pid_tracker *pid_tracker;
+ struct lttng_id_tracker pid_tracker;
+ struct lttng_id_tracker vpid_tracker;
+ struct lttng_id_tracker uid_tracker;
+ struct lttng_id_tracker vuid_tracker;
+ struct lttng_id_tracker gid_tracker;
+ struct lttng_id_tracker vgid_tracker;
unsigned int metadata_dumped:1,
tstate:1; /* Transient enable state */
/* List of enablers */
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 {
char *data; /* Metadata cache */
unsigned int cache_alloc; /* Metadata allocated size (bytes) */
unsigned int metadata_written; /* Number of bytes written in metadata cache */
+ atomic_t producing; /* Metadata being produced (incomplete) */
struct kref refcount; /* Metadata cache usage */
struct list_head metadata_stream; /* Metadata stream list */
uuid_le uuid; /* Trace session unique ID (copy) */
void lttng_probes_exit(void);
int lttng_metadata_output_channel(struct lttng_metadata_stream *stream,
- struct channel *chan);
+ struct channel *chan, bool *coherent);
-int lttng_pid_tracker_get_node_pid(const struct lttng_pid_hash_node *node);
-struct lttng_pid_tracker *lttng_pid_tracker_create(void);
-void lttng_pid_tracker_destroy(struct lttng_pid_tracker *lpf);
-bool lttng_pid_tracker_lookup(struct lttng_pid_tracker *lpf, int pid);
-int lttng_pid_tracker_add(struct lttng_pid_tracker *lpf, int pid);
-int lttng_pid_tracker_del(struct lttng_pid_tracker *lpf, int pid);
+int lttng_id_tracker_get_node_id(const struct lttng_id_hash_node *node);
+int lttng_id_tracker_empty_set(struct lttng_id_tracker *lf);
+void lttng_id_tracker_destroy(struct lttng_id_tracker *lf, bool rcu);
+bool lttng_id_tracker_lookup(struct lttng_id_tracker_rcu *p, int id);
+int lttng_id_tracker_add(struct lttng_id_tracker *lf, int id);
+int lttng_id_tracker_del(struct lttng_id_tracker *lf, int id);
-int lttng_session_track_pid(struct lttng_session *session, int pid);
-int lttng_session_untrack_pid(struct lttng_session *session, int pid);
+int lttng_session_track_id(struct lttng_session *session,
+ enum tracker_type tracker_type, int id);
+int lttng_session_untrack_id(struct lttng_session *session,
+ enum tracker_type tracker_type, int id);
-int lttng_session_list_tracker_pids(struct lttng_session *session);
+int lttng_session_list_tracker_ids(struct lttng_session *session,
+ enum tracker_type tracker_type);
void lttng_clock_ref(void);
void lttng_clock_unref(void);
#if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS)
int lttng_syscalls_register(struct lttng_channel *chan, void *filter);
int lttng_syscalls_unregister(struct lttng_channel *chan);
+int lttng_syscalls_destroy(struct lttng_channel *chan);
int lttng_syscall_filter_enable(struct lttng_channel *chan,
- const char *name);
+ struct lttng_event *event);
int lttng_syscall_filter_disable(struct lttng_channel *chan,
- const char *name);
+ struct lttng_event *event);
long lttng_channel_syscall_mask(struct lttng_channel *channel,
struct lttng_kernel_syscall_mask __user *usyscall_mask);
#else
return 0;
}
+static inline int lttng_syscalls_destroy(struct lttng_channel *chan)
+{
+ return 0;
+}
+
static inline int lttng_syscall_filter_enable(struct lttng_channel *chan,
- const char *name)
+ struct lttng_event *event);
{
return -ENOSYS;
}
static inline int lttng_syscall_filter_disable(struct lttng_channel *chan,
- const char *name)
+ struct lttng_event *event);
{
return -ENOSYS;
}
struct lttng_kernel_filter_bytecode __user *bytecode);
void lttng_enabler_event_link_bytecode(struct lttng_event *event,
struct lttng_enabler *enabler);
+void lttng_free_event_filter_runtime(struct lttng_event *event);
int lttng_probes_init(void);
int lttng_add_callstack_to_ctx(struct lttng_ctx **ctx, int type);
-#if defined(CONFIG_PERF_EVENTS) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33))
+#if defined(CONFIG_CGROUPS) && \
+ ((LTTNG_LINUX_VERSION_CODE >= LTTNG_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) && \
+ (LTTNG_LINUX_VERSION_CODE >= LTTNG_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) && \
+ (LTTNG_LINUX_VERSION_CODE >= LTTNG_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) && \
+ (LTTNG_LINUX_VERSION_CODE >= LTTNG_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) && \
+ (LTTNG_LINUX_VERSION_CODE >= LTTNG_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) && \
+ (LTTNG_LINUX_VERSION_CODE >= LTTNG_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) && \
+ (LTTNG_LINUX_VERSION_CODE >= LTTNG_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,
}
#endif
-#if defined(CONFIG_DYNAMIC_FTRACE) && !defined(LTTNG_FTRACE_MISSING_HEADER)
-int lttng_ftrace_register(const char *name,
- const char *symbol_name,
- struct lttng_event *event);
-void lttng_ftrace_unregister(struct lttng_event *event);
-void lttng_ftrace_destroy_private(struct lttng_event *event);
-#else
-static inline
-int lttng_ftrace_register(const char *name,
- const char *symbol_name,
- struct lttng_event *event)
-{
- return -ENOSYS;
-}
-
-static inline
-void lttng_ftrace_unregister(struct lttng_event *event)
-{
-}
-
-static inline
-void lttng_ftrace_destroy_private(struct lttng_event *event)
-{
-}
-#endif
-
int lttng_calibrate(struct lttng_kernel_calibrate *calibrate);
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 */