-#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 <wrapper/uuid.h>
+#include <lttng-cpuhotplug.h>
+#include <linux/uuid.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;
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,
};
* lttng_ctx_field because cpu hotplug needs fixed-location addresses.
*/
struct lttng_perf_counter_field {
+#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 notifier_block nb;
int hp_enable;
+#endif
struct perf_event_attr *attr;
struct perf_event **e; /* per-cpu array */
};
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;
+};
+
+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;
};
enum lttng_enabler_type {
- LTTNG_ENABLER_WILDCARD,
+ LTTNG_ENABLER_STAR_GLOB,
LTTNG_ENABLER_NAME,
};
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
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);
#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);
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_PERF_EVENTS) && (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,33))
int lttng_add_perf_counter_to_ctx(uint32_t type,
uint64_t config,
const char *name,
struct lttng_ctx **ctx);
+int lttng_cpuhp_perf_counter_online(unsigned int cpu,
+ struct lttng_cpuhp_node *node);
+int lttng_cpuhp_perf_counter_dead(unsigned int cpu,
+ struct lttng_cpuhp_node *node);
#else
static inline
int lttng_add_perf_counter_to_ctx(uint32_t type,
{
return -ENOSYS;
}
+static inline
+int lttng_cpuhp_perf_counter_online(unsigned int cpu,
+ struct lttng_cpuhp_node *node)
+{
+ return 0;
+}
+static inline
+int lttng_cpuhp_perf_counter_dead(unsigned int cpu,
+ struct lttng_cpuhp_node *node)
+{
+ return 0;
+}
#endif
int lttng_logger_init(void);
}
#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
-#ifdef CONFIG_DYNAMIC_FTRACE
-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))
+#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,35))
#define TRACEPOINT_HAS_DATA_ARG
#endif
projects / lttng-modules.git / blobdiff