X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=ltt-events.h;h=304bcb69989b406d8c3b02d76f3320ca5321324c;hb=f71ecafa46ad2ba9998ba6e4c425645d988d7f8c;hp=b9bb3bb95d8bba919729afabd17f135a76fe9791;hpb=53f1f0ca4eb1890673992697c19e4e1507ec4ac5;p=deliverable%2Flttng-modules.git

diff --git a/ltt-events.h b/ltt-events.h
index b9bb3bb9..304bcb69 100644
--- a/ltt-events.h
+++ b/ltt-events.h
@@ -7,11 +7,13 @@
  * Copyright 2010 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  *
  * Holds LTTng per-session event registry.
+ *
+ * Dual LGPL v2.1/GPL v2 license.
  */
 
 #include <linux/list.h>
-#include <linux/uuid.h>
 #include <linux/kprobes.h>
+#include "wrapper/uuid.h"
 #include "ltt-debugfs-abi.h"
 
 #undef is_signed_type
@@ -126,7 +128,8 @@ struct lttng_ctx_field {
 	union {
 		struct {
 			struct perf_event **e;	/* per-cpu array */
-			struct list_head head;
+			struct notifier_block nb;
+			int hp_enable;
 			struct perf_event_attr *attr;
 		} perf_counter;
 	} u;
@@ -161,6 +164,7 @@ struct lttng_probe_desc {
 struct ltt_event {
 	unsigned int id;
 	struct ltt_channel *chan;
+	int enabled;
 	const struct lttng_event_desc *desc;
 	void *filter;
 	struct lttng_ctx *ctx;
@@ -187,6 +191,7 @@ struct ltt_channel_ops {
 				unsigned int read_timer_interval);
 	void (*channel_destroy)(struct channel *chan);
 	struct lib_ring_buffer *(*buffer_read_open)(struct channel *chan);
+	int (*buffer_has_read_closed_stream)(struct channel *chan);
 	void (*buffer_read_close)(struct lib_ring_buffer *buf);
 	int (*event_reserve)(struct lib_ring_buffer_ctx *ctx,
 			     uint32_t event_id);
@@ -199,19 +204,22 @@ struct ltt_channel_ops {
 	 * may change due to concurrent writes.
 	 */
 	size_t (*packet_avail_size)(struct channel *chan);
-	wait_queue_head_t *(*get_reader_wait_queue)(struct ltt_channel *chan);
+	wait_queue_head_t *(*get_reader_wait_queue)(struct channel *chan);
+	wait_queue_head_t *(*get_hp_wait_queue)(struct channel *chan);
+	int (*is_finalized)(struct channel *chan);
+	int (*is_disabled)(struct channel *chan);
 };
 
 struct ltt_channel {
 	unsigned int id;
 	struct channel *chan;		/* Channel buffers */
+	int enabled;
 	struct lttng_ctx *ctx;
 	/* Event ID management */
 	struct ltt_session *session;
 	struct file *file;		/* File associated to channel */
 	unsigned int free_event_id;	/* Next event ID to allocate */
 	struct list_head list;		/* Channel list */
-	wait_queue_head_t notify_wait;	/* Channel addition notif. waitqueue */
 	struct ltt_channel_ops *ops;
 	int header_type;		/* 0: unset, 1: compact, 2: large */
 	int metadata_dumped:1;
@@ -238,8 +246,8 @@ struct ltt_transport {
 };
 
 struct ltt_session *ltt_session_create(void);
-int ltt_session_start(struct ltt_session *session);
-int ltt_session_stop(struct ltt_session *session);
+int ltt_session_enable(struct ltt_session *session);
+int ltt_session_disable(struct ltt_session *session);
 void ltt_session_destroy(struct ltt_session *session);
 
 struct ltt_channel *ltt_channel_create(struct ltt_session *session,
@@ -258,9 +266,15 @@ struct ltt_event *ltt_event_create(struct ltt_channel *chan,
 				   struct lttng_kernel_event *event_param,
 				   void *filter);
 
+int ltt_channel_enable(struct ltt_channel *channel);
+int ltt_channel_disable(struct ltt_channel *channel);
+int ltt_event_enable(struct ltt_event *event);
+int ltt_event_disable(struct ltt_event *event);
+
 void ltt_transport_register(struct ltt_transport *transport);
 void ltt_transport_unregister(struct ltt_transport *transport);
 
+void synchronize_trace(void);
 int ltt_debugfs_abi_init(void);
 void ltt_debugfs_abi_exit(void);
 
@@ -271,11 +285,34 @@ void ltt_event_put(const struct lttng_event_desc *desc);
 int ltt_probes_init(void);
 void ltt_probes_exit(void);
 struct lttng_ctx_field *lttng_append_context(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);
 void lttng_destroy_context(struct lttng_ctx *ctx);
 int lttng_add_pid_to_ctx(struct lttng_ctx **ctx);
 int lttng_add_comm_to_ctx(struct lttng_ctx **ctx);
 int lttng_add_prio_to_ctx(struct lttng_ctx **ctx);
 int lttng_add_nice_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_vpid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_tid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_vtid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_ppid_to_ctx(struct lttng_ctx **ctx);
+int lttng_add_vppid_to_ctx(struct lttng_ctx **ctx);
+#ifdef CONFIG_PERF_EVENTS
+int lttng_add_perf_counter_to_ctx(uint32_t type,
+				  uint64_t config,
+				  const char *name,
+				  struct lttng_ctx **ctx);
+#else
+static inline
+int lttng_add_perf_counter_to_ctx(uint32_t type,
+				  uint64_t config,
+				  const char *name,
+				  struct lttng_ctx **ctx)
+{
+	return -ENOSYS;
+}
+#endif
 
 #ifdef CONFIG_KPROBES
 int lttng_kprobes_register(const char *name,
@@ -335,4 +372,8 @@ void lttng_ftrace_destroy_private(struct ltt_event *event)
 
 extern const struct file_operations lttng_tracepoint_list_fops;
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
+#define TRACEPOINT_HAS_DATA_ARG
+#endif
+
 #endif /* _LTT_EVENTS_H */