* 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/kprobes.h>
#include "ltt-debugfs-abi.h"
+#undef is_signed_type
+#define is_signed_type(type) (((type)(-1)) < 0)
+
struct ltt_channel;
struct ltt_session;
struct lib_ring_buffer_ctx;
};
struct lttng_ctx_field {
- const char *name;
- struct lttng_type type;
- void *callback;
+ struct lttng_event_field event_field;
+ size_t (*get_size)(size_t offset);
+ void (*record)(struct lttng_ctx_field *field,
+ struct lib_ring_buffer_ctx *ctx,
+ struct ltt_channel *chan);
union {
struct {
struct perf_event **e; /* per-cpu array */
struct perf_event_attr *attr;
} perf_counter;
} u;
+ void (*destroy)(struct lttng_ctx_field *field);
};
struct lttng_ctx {
struct ltt_channel *chan;
const struct lttng_event_desc *desc;
void *filter;
+ struct lttng_ctx *ctx;
enum lttng_kernel_instrumentation instrumentation;
union {
struct {
struct ltt_channel {
unsigned int id;
struct channel *chan; /* Channel buffers */
+ struct lttng_ctx *ctx;
/* Event ID management */
struct ltt_session *session;
struct file *file; /* File associated to channel */
struct ltt_session {
int active; /* Is trace session active ? */
+ int been_active; /* Has trace session been active ? */
struct file *file; /* File associated to session */
struct ltt_channel *metadata; /* Metadata channel */
struct list_head chan; /* Channel list head */
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);
+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);
#ifdef CONFIG_KPROBES
int lttng_kprobes_register(const char *name,
uint64_t addr,
struct ltt_event *event);
void lttng_kprobes_unregister(struct ltt_event *event);
+void lttng_kprobes_destroy_private(struct ltt_event *event);
#else
static inline
int lttng_kprobes_register(const char *name,
void lttng_kprobes_unregister(struct ltt_event *event)
{
}
+
+static inline
+void lttng_kprobes_destroy_private(struct ltt_event *event)
+{
+}
#endif
#ifdef CONFIG_DYNAMIC_FTRACE
const char *symbol_name,
struct ltt_event *event);
void lttng_ftrace_unregister(struct ltt_event *event);
+void lttng_ftrace_destroy_private(struct ltt_event *event);
#else
static inline
int lttng_ftrace_register(const char *name,
void lttng_ftrace_unregister(struct ltt_event *event)
{
}
+
+static inline
+void lttng_ftrace_destroy_private(struct ltt_event *event)
+{
+}
#endif
+
+extern const struct file_operations lttng_tracepoint_list_fops;
+
#endif /* _LTT_EVENTS_H */