X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=lttng-events.h;h=7d3314590384906fbd95b2406f593c59d1806cd0;hb=e0130fabb0cbec05e19fcc7fe955fe9d8d8bc91e;hp=6b39304f8d114e92387308cac22d74c72e0f5a98;hpb=a26a7e4f2376619bb63519d089caeaf59af4a6b2;p=lttng-modules.git

diff --git a/lttng-events.h b/lttng-events.h
index 6b39304f..7d331459 100644
--- a/lttng-events.h
+++ b/lttng-events.h
@@ -167,6 +167,7 @@ struct lttng_ctx {
 	struct lttng_ctx_field *fields;
 	unsigned int nr_fields;
 	unsigned int allocated_fields;
+	size_t largest_align;	/* in bytes */
 };
 
 struct lttng_event_desc {
@@ -236,6 +237,10 @@ struct lttng_channel_ops {
 				      const void *src, size_t len);
 	void (*event_memset)(struct lib_ring_buffer_ctx *ctx,
 			     int c, size_t len);
+	void (*event_strcpy)(struct lib_ring_buffer_ctx *ctx, const char *src,
+			     size_t len);
+	void (*event_strcpy_from_user)(struct lib_ring_buffer_ctx *ctx,
+				       const char __user *src, size_t len);
 	/*
 	 * packet_avail_size returns the available size in the current
 	 * packet. Note that the size returned is only a hint, since it
@@ -276,6 +281,8 @@ struct lttng_transport {
 	struct lttng_channel_ops ops;
 };
 
+struct lttng_syscall_filter;
+
 struct lttng_channel {
 	unsigned int id;
 	struct channel *chan;		/* Channel buffers */
@@ -290,12 +297,19 @@ struct lttng_channel {
 	struct lttng_transport *transport;
 	struct lttng_event **sc_table;	/* for syscall tracing */
 	struct lttng_event **compat_sc_table;
+	struct lttng_event **sc_exit_table;	/* for syscall exit tracing */
+	struct lttng_event **compat_sc_exit_table;
 	struct lttng_event *sc_unknown;	/* for unknown syscalls */
 	struct lttng_event *sc_compat_unknown;
-	struct lttng_event *sc_exit;	/* for syscall exit */
+	struct lttng_event *sc_exit_unknown;
+	struct lttng_event *compat_sc_exit_unknown;
+	struct lttng_syscall_filter *sc_filter;
 	int header_type;		/* 0: unset, 1: compact, 2: large */
 	enum channel_type channel_type;
-	unsigned int metadata_dumped:1;
+	unsigned int metadata_dumped:1,
+		sys_enter_registered:1,
+		sys_exit_registered:1,
+		syscall_all:1;
 };
 
 struct lttng_metadata_stream {
@@ -307,6 +321,19 @@ struct lttng_metadata_stream {
 	wait_queue_head_t read_wait;	/* Reader buffer-level wait queue */
 	struct list_head list;		/* Stream list */
 	struct lttng_transport *transport;
+	struct mutex lock;
+};
+
+
+/*
+ * struct lttng_pid_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)
+
+struct lttng_pid_tracker {
+	struct hlist_head pid_hash[LTTNG_PID_TABLE_SIZE];
 };
 
 struct lttng_session {
@@ -319,6 +346,7 @@ 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;
 	unsigned int metadata_dumped:1;
 };
 
@@ -328,6 +356,7 @@ struct lttng_metadata_cache {
 	unsigned int metadata_written;	/* Number of bytes written in metadata cache */
 	struct kref refcount;		/* Metadata cache usage */
 	struct list_head metadata_stream;	/* Metadata stream list */
+	uuid_le uuid;			/* Trace session unique ID (copy) */
 };
 
 struct lttng_session *lttng_session_create(void);
@@ -383,9 +412,25 @@ void lttng_probes_exit(void);
 int lttng_metadata_output_channel(struct lttng_metadata_stream *stream,
 		struct channel *chan);
 
+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_session_track_pid(struct lttng_session *session, int pid);
+int lttng_session_untrack_pid(struct lttng_session *session, int pid);
+
 #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_syscall_filter_enable(struct lttng_channel *chan,
+		const char *name);
+int lttng_syscall_filter_disable(struct lttng_channel *chan,
+		const char *name);
+long lttng_channel_syscall_mask(struct lttng_channel *channel,
+		struct lttng_kernel_syscall_mask __user *usyscall_mask);
+int lttng_abi_syscall_list(void);
 #else
 static inline int lttng_syscalls_register(struct lttng_channel *chan, void *filter)
 {
@@ -396,9 +441,37 @@ static inline int lttng_syscalls_unregister(struct lttng_channel *chan)
 {
 	return 0;
 }
+
+static inline
+int lttng_syscall_filter_enable(struct lttng_channel *chan,
+		const char *name)
+{
+	return -ENOSYS;
+}
+
+static inline
+int lttng_syscall_filter_disable(struct lttng_channel *chan,
+		const char *name)
+{
+	return -ENOSYS;
+}
+
+static inline
+long lttng_channel_syscall_mask(struct lttng_channel *channel,
+		struct lttng_kernel_syscall_mask __user *usyscall_mask)
+{
+	return -ENOSYS;
+}
+
+static inline
+int lttng_abi_syscall_list(void)
+{
+	return -ENOSYS;
+}
 #endif
 
 struct lttng_ctx_field *lttng_append_context(struct lttng_ctx **ctx);
+void lttng_context_update(struct lttng_ctx *ctx);
 int lttng_find_context(struct lttng_ctx *ctx, const char *name);
 void lttng_remove_context_field(struct lttng_ctx **ctx,
 				struct lttng_ctx_field *field);
@@ -429,6 +502,9 @@ int lttng_add_perf_counter_to_ctx(uint32_t type,
 }
 #endif
 
+int lttng_logger_init(void);
+void lttng_logger_exit(void);
+
 extern int lttng_statedump_start(struct lttng_session *session);
 
 #ifdef CONFIG_KPROBES
@@ -522,6 +598,7 @@ void lttng_ftrace_destroy_private(struct lttng_event *event)
 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