Add context management infrastructure

[lttng-modules.git] / ltt-events.h

diff --git a/ltt-events.h b/ltt-events.h
index 6cc3753101fb1606de8f1c11fe1f81c504c7553b..bacef0a82e69c92f4dca34291a70db7426ccb86b 100644 (file)
--- a/ltt-events.h
+++ b/ltt-events.h
@@ -125,6 +125,7 @@ struct lttng_ctx_field {
                        struct perf_event_attr *attr;
                } perf_counter;
        } u;
+       void (*destroy)(struct lttng_ctx_field *field);
 };
 
 struct lttng_ctx {
@@ -139,6 +140,7 @@ struct lttng_event_desc {
        const struct lttng_event_ctx *ctx;      /* context */
        const struct lttng_event_field *fields; /* event payload */
        unsigned int nr_fields;
+       struct module *owner;
 };
 
 struct lttng_probe_desc {
@@ -260,6 +262,8 @@ const struct lttng_event_desc *ltt_event_get(const char *name);
 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);
 
 #ifdef CONFIG_KPROBES
 int lttng_kprobes_register(const char *name,
@@ -268,6 +272,7 @@ 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,
@@ -283,6 +288,11 @@ static inline
 void lttng_kprobes_unregister(struct ltt_event *event)
 {
 }
+
+static inline
+void lttng_kprobes_destroy_private(struct ltt_event *event)
+{
+}
 #endif
 
 #ifdef CONFIG_DYNAMIC_FTRACE
@@ -290,6 +300,7 @@ int lttng_ftrace_register(const char *name,
                          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,
@@ -303,5 +314,13 @@ static inline
 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 */