X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=include%2Flttng%2Fevents.h;h=09ab3cf21b544133832cc9bc09b424ac85b69ccc;hb=754d534a316149de6b19f5f0d2a1dd3b246bd1c9;hp=4c94116eec236470bebbfe4de3815a228dae1b3d;hpb=21f58fb7e62071dae3ddf13817631749bcab4e00;p=lttng-modules.git

diff --git a/include/lttng/events.h b/include/lttng/events.h
index 4c94116e..09ab3cf2 100644
--- a/include/lttng/events.h
+++ b/include/lttng/events.h
@@ -10,12 +10,12 @@
 #ifndef _LTTNG_EVENTS_H
 #define _LTTNG_EVENTS_H
 
-#include <linux/irq_work.h>
 #include <linux/version.h>
 #include <linux/list.h>
 #include <linux/kprobes.h>
 #include <linux/kref.h>
 #include <linux/uuid.h>
+#include <linux/irq_work.h>
 #include <wrapper/uprobes.h>
 #include <lttng/cpuhotplug.h>
 #include <lttng/tracer.h>
@@ -170,6 +170,7 @@ struct lttng_perf_counter_field {
 
 struct lttng_probe_ctx {
 	struct lttng_event *event;
+	struct lttng_event_notifier *event_notifier; // Not sure if we will ever need it.
 	uint8_t interruptible;
 };
 
@@ -212,6 +213,7 @@ struct lttng_event_desc {
 	const struct lttng_event_field *fields;	/* event payload */
 	unsigned int nr_fields;
 	struct module *owner;
+	void *event_notifier_callback;
 };
 
 struct lttng_probe_desc {
@@ -268,12 +270,25 @@ struct lttng_enabler_ref {
 };
 
 struct lttng_uprobe_handler {
-	struct lttng_event *event;
+	union {
+		struct lttng_event *event;
+		struct lttng_event_notifier *event_notifier;
+	} u;
 	loff_t offset;
 	struct uprobe_consumer up_consumer;
 	struct list_head node;
 };
 
+struct lttng_kprobe {
+	struct kprobe kp;
+	char *symbol_name;
+};
+
+struct lttng_uprobe {
+	struct inode *inode;
+	struct list_head head;
+};
+
 enum lttng_syscall_entryexit {
 	LTTNG_SYSCALL_ENTRY,
 	LTTNG_SYSCALL_EXIT,
@@ -298,18 +313,12 @@ struct lttng_event {
 	struct lttng_ctx *ctx;
 	enum lttng_kernel_instrumentation instrumentation;
 	union {
-		struct {
-			struct kprobe kp;
-			char *symbol_name;
-		} kprobe;
+		struct lttng_kprobe kprobe;
 		struct {
 			struct lttng_krp *lttng_krp;
 			char *symbol_name;
 		} kretprobe;
-		struct {
-			struct inode *inode;
-			struct list_head head;
-		} uprobe;
+		struct lttng_uprobe uprobe;
 		struct {
 			char *syscall_name;
 			enum lttng_syscall_entryexit entryexit;
@@ -340,6 +349,8 @@ struct lttng_event_notifier {
 
 	enum lttng_kernel_instrumentation instrumentation;
 	union {
+		struct lttng_kprobe kprobe;
+		struct lttng_uprobe uprobe;
 	} u;
 
 	/* Backward references: list of lttng_enabler_ref (ref to enablers) */
@@ -654,7 +665,9 @@ int lttng_event_notifier_enabler_enable(
 int lttng_event_notifier_enabler_disable(
 		struct lttng_event_notifier_enabler *event_notifier_enabler);
 int lttng_fix_pending_events(void);
+int lttng_fix_pending_event_notifiers(void);
 int lttng_session_active(void);
+bool lttng_event_notifier_active(void);
 
 struct lttng_session *lttng_session_create(void);
 int lttng_session_enable(struct lttng_session *session);
@@ -717,6 +730,9 @@ int lttng_channel_disable(struct lttng_channel *channel);
 int lttng_event_enable(struct lttng_event *event);
 int lttng_event_disable(struct lttng_event *event);
 
+int lttng_event_notifier_enable(struct lttng_event_notifier *event_notifier);
+int lttng_event_notifier_disable(struct lttng_event_notifier *event_notifier);
+
 void lttng_transport_register(struct lttng_transport *transport);
 void lttng_transport_unregister(struct lttng_transport *transport);
 
@@ -755,22 +771,24 @@ void lttng_clock_ref(void);
 void lttng_clock_unref(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,
+int lttng_syscalls_register_event(struct lttng_channel *chan, void *filter);
+int lttng_syscalls_unregister_event(struct lttng_channel *chan);
+int lttng_syscalls_destroy_event(struct lttng_channel *chan);
+int lttng_syscall_filter_enable_event(struct lttng_channel *chan,
 		struct lttng_event *event);
-int lttng_syscall_filter_disable(struct lttng_channel *chan,
+int lttng_syscall_filter_disable_event(struct lttng_channel *chan,
 		struct lttng_event *event);
 long lttng_channel_syscall_mask(struct lttng_channel *channel,
 		struct lttng_kernel_syscall_mask __user *usyscall_mask);
+
 #else
-static inline int lttng_syscalls_register(struct lttng_channel *chan, void *filter)
+static inline int lttng_syscalls_register_event(
+		struct lttng_channel *chan, void *filter)
 {
 	return -ENOSYS;
 }
 
-static inline int lttng_syscalls_unregister(struct lttng_channel *chan)
+static inline int lttng_syscalls_unregister_event(struct lttng_channel *chan)
 {
 	return 0;
 }
@@ -780,13 +798,13 @@ static inline int lttng_syscalls_destroy(struct lttng_channel *chan)
 	return 0;
 }
 
-static inline int lttng_syscall_filter_enable(struct lttng_channel *chan,
+static inline int lttng_syscall_filter_enable_event(struct lttng_channel *chan,
 		struct lttng_event *event);
 {
 	return -ENOSYS;
 }
 
-static inline int lttng_syscall_filter_disable(struct lttng_channel *chan,
+static inline int lttng_syscall_filter_disable_event(struct lttng_channel *chan,
 		struct lttng_event *event);
 {
 	return -ENOSYS;
@@ -1003,16 +1021,22 @@ void lttng_logger_exit(void);
 extern int lttng_statedump_start(struct lttng_session *session);
 
 #ifdef CONFIG_KPROBES
-int lttng_kprobes_register(const char *name,
+int lttng_kprobes_register_event(const char *name,
 		const char *symbol_name,
 		uint64_t offset,
 		uint64_t addr,
 		struct lttng_event *event);
-void lttng_kprobes_unregister(struct lttng_event *event);
-void lttng_kprobes_destroy_private(struct lttng_event *event);
+void lttng_kprobes_unregister_event(struct lttng_event *event);
+void lttng_kprobes_destroy_event_private(struct lttng_event *event);
+int lttng_kprobes_register_event_notifier(const char *symbol_name,
+		uint64_t offset,
+		uint64_t addr,
+		struct lttng_event_notifier *event_notifier);
+void lttng_kprobes_unregister_event_notifier(struct lttng_event_notifier *event_notifier);
+void lttng_kprobes_destroy_event_notifier_private(struct lttng_event_notifier *event_notifier);
 #else
 static inline
-int lttng_kprobes_register(const char *name,
+int lttng_kprobes_register_event(const char *name,
 		const char *symbol_name,
 		uint64_t offset,
 		uint64_t addr,
@@ -1022,12 +1046,31 @@ int lttng_kprobes_register(const char *name,
 }
 
 static inline
-void lttng_kprobes_unregister(struct lttng_event *event)
+void lttng_kprobes_unregister_event(struct lttng_event *event)
 {
 }
 
 static inline
-void lttng_kprobes_destroy_private(struct lttng_event *event)
+void lttng_kprobes_destroy_event_private(struct lttng_event *event)
+{
+}
+
+static inline
+int lttng_kprobes_register_event_notifier(const char *symbol_name,
+		uint64_t offset,
+		uint64_t addr,
+		struct lttng_event_notifier *event_notifier)
+{
+	return -ENOSYS;
+}
+
+static inline
+void lttng_kprobes_unregister_event_notifier(struct lttng_event_notifier *event_notifier)
+{
+}
+
+static inline
+void lttng_kprobes_destroy_event_notifier_private(struct lttng_event_notifier *event_notifier)
 {
 }
 #endif
@@ -1035,35 +1078,68 @@ void lttng_kprobes_destroy_private(struct lttng_event *event)
 int lttng_event_add_callsite(struct lttng_event *event,
 	struct lttng_kernel_event_callsite *callsite);
 
+int lttng_event_notifier_add_callsite(struct lttng_event_notifier *event_notifier,
+	struct lttng_kernel_event_callsite *callsite);
+
 #ifdef CONFIG_UPROBES
-int lttng_uprobes_register(const char *name,
+int lttng_uprobes_register_event(const char *name,
 	int fd, struct lttng_event *event);
-int lttng_uprobes_add_callsite(struct lttng_event *event,
+int lttng_uprobes_event_add_callsite(struct lttng_event *event,
+	struct lttng_kernel_event_callsite *callsite);
+void lttng_uprobes_unregister_event(struct lttng_event *event);
+void lttng_uprobes_destroy_event_private(struct lttng_event *event);
+int lttng_uprobes_register_event_notifier(const char *name,
+	int fd, struct lttng_event_notifier *event_notifier);
+int lttng_uprobes_event_notifier_add_callsite(struct lttng_event_notifier *event_notifier,
 	struct lttng_kernel_event_callsite *callsite);
-void lttng_uprobes_unregister(struct lttng_event *event);
-void lttng_uprobes_destroy_private(struct lttng_event *event);
+void lttng_uprobes_unregister_event_notifier(struct lttng_event_notifier *event_notifier);
+void lttng_uprobes_destroy_event_notifier_private(struct lttng_event_notifier *event_notifier);
 #else
 static inline
-int lttng_uprobes_register(const char *name,
+int lttng_uprobes_register_event(const char *name,
 	int fd, struct lttng_event *event)
 {
 	return -ENOSYS;
 }
 
 static inline
-int lttng_uprobes_add_callsite(struct lttng_event *event,
+int lttng_uprobes_event_add_callsite(struct lttng_event *event,
+	struct lttng_kernel_event_callsite *callsite)
+{
+	return -ENOSYS;
+}
+
+static inline
+void lttng_uprobes_unregister_event(struct lttng_event *event)
+{
+}
+
+static inline
+void lttng_uprobes_destroy_event_private(struct lttng_event *event)
+{
+}
+
+static inline
+int lttng_uprobes_register_event_notifier(const char *name,
+	int fd, struct lttng_event_notifier *event_notifier)
+{
+	return -ENOSYS;
+}
+
+static inline
+int lttng_uprobes_event_notifier_add_callsite(struct lttng_event_notifier *event_notifier,
 	struct lttng_kernel_event_callsite *callsite)
 {
 	return -ENOSYS;
 }
 
 static inline
-void lttng_uprobes_unregister(struct lttng_event *event)
+void lttng_uprobes_unregister_event_notifier(struct lttng_event_notifier *event_notifier)
 {
 }
 
 static inline
-void lttng_uprobes_destroy_private(struct lttng_event *event)
+void lttng_uprobes_destroy_event_notifier_private(struct lttng_event_notifier *event_notifier)
 {
 }
 #endif