1 files changed, 75 insertions, 28 deletions

diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h
index c082f223e2fe..3167f2df4126 100644
--- a/include/linux/ftrace_event.h
+++ b/include/linux/ftrace_event.h
@@ -73,18 +73,25 @@ struct trace_iterator {
 };
 
 
+struct trace_event;
+
 typedef enum print_line_t (*trace_print_func)(struct trace_iterator *iter,
-                                              int flags);
-struct trace_event {
-        struct hlist_node       node;
-        struct list_head        list;
-        int                     type;
+                                      int flags, struct trace_event *event);
+
+struct trace_event_functions {
         trace_print_func        trace;
         trace_print_func        raw;
         trace_print_func        hex;
         trace_print_func        binary;
 };
 
+struct trace_event {
+        struct hlist_node               node;
+        struct list_head                list;
+        int                             type;
+        struct trace_event_functions    *funcs;
+};
+
 extern int register_ftrace_event(struct trace_event *event);
 extern int unregister_ftrace_event(struct trace_event *event);
 
@@ -116,28 +123,70 @@ void tracing_record_cmdline(struct task_struct *tsk);
 
 struct event_filter;
 
+enum trace_reg {
+        TRACE_REG_REGISTER,
+        TRACE_REG_UNREGISTER,
+        TRACE_REG_PERF_REGISTER,
+        TRACE_REG_PERF_UNREGISTER,
+};
+
+struct ftrace_event_call;
+
+struct ftrace_event_class {
+        char                    *system;
+        void                    *probe;
+#ifdef CONFIG_PERF_EVENTS
+        void                    *perf_probe;
+#endif
+        int                     (*reg)(struct ftrace_event_call *event,
+                                       enum trace_reg type);
+        int                     (*define_fields)(struct ftrace_event_call *);
+        struct list_head        *(*get_fields)(struct ftrace_event_call *);
+        struct list_head        fields;
+        int                     (*raw_init)(struct ftrace_event_call *);
+};
+
+enum {
+        TRACE_EVENT_FL_ENABLED_BIT,
+        TRACE_EVENT_FL_FILTERED_BIT,
+};
+
+enum {
+        TRACE_EVENT_FL_ENABLED  = (1 << TRACE_EVENT_FL_ENABLED_BIT),
+        TRACE_EVENT_FL_FILTERED = (1 << TRACE_EVENT_FL_FILTERED_BIT),
+};
+
 struct ftrace_event_call {
         struct list_head        list;
+        struct ftrace_event_class *class;
         char                    *name;
-        char                    *system;
         struct dentry           *dir;
-        struct trace_event      *event;
-        int                     enabled;
-        int                     (*regfunc)(struct ftrace_event_call *);
-        void                    (*unregfunc)(struct ftrace_event_call *);
-        int                     id;
+        struct trace_event      event;
         const char              *print_fmt;
-        int                     (*raw_init)(struct ftrace_event_call *);
-        int                     (*define_fields)(struct ftrace_event_call *);
-        struct list_head        fields;
-        int                     filter_active;
         struct event_filter     *filter;
         void                    *mod;
         void                    *data;
 
+        /*
+         * 32 bit flags:
+         *   bit 1:             enabled
+         *   bit 2:             filter_active
+         *
+         * Changes to flags must hold the event_mutex.
+         *
+         * Note: Reads of flags do not hold the event_mutex since
+         * they occur in critical sections. But the way flags
+         * is currently used, these changes do no affect the code
+         * except that when a change is made, it may have a slight
+         * delay in propagating the changes to other CPUs due to
+         * caching and such.
+         */
+        unsigned int            flags;
+
+#ifdef CONFIG_PERF_EVENTS
         int                     perf_refcount;
-        int                     (*perf_event_enable)(struct ftrace_event_call *);
-        void                    (*perf_event_disable)(struct ftrace_event_call *);
+        struct hlist_head       *perf_events;
+#endif
 };
 
 #define PERF_MAX_TRACE_SIZE     2048
@@ -194,24 +243,22 @@ struct perf_event;
 
 DECLARE_PER_CPU(struct pt_regs, perf_trace_regs);
 
-extern int perf_trace_enable(int event_id);
-extern void perf_trace_disable(int event_id);
-extern int ftrace_profile_set_filter(struct perf_event *event, int event_id,
+extern int  perf_trace_init(struct perf_event *event);
+extern void perf_trace_destroy(struct perf_event *event);
+extern int  perf_trace_enable(struct perf_event *event);
+extern void perf_trace_disable(struct perf_event *event);
+extern int  ftrace_profile_set_filter(struct perf_event *event, int event_id,
                                      char *filter_str);
 extern void ftrace_profile_free_filter(struct perf_event *event);
-extern void *
-perf_trace_buf_prepare(int size, unsigned short type, int *rctxp,
-                         unsigned long *irq_flags);
+extern void *perf_trace_buf_prepare(int size, unsigned short type,
+                                    struct pt_regs *regs, int *rctxp);
 
 static inline void
 perf_trace_buf_submit(void *raw_data, int size, int rctx, u64 addr,
-                       u64 count, unsigned long irq_flags, struct pt_regs *regs)
+                       u64 count, struct pt_regs *regs, void *head)
 {
-        struct trace_entry *entry = raw_data;
-
-        perf_tp_event(entry->type, addr, count, raw_data, size, regs);
+        perf_tp_event(addr, count, raw_data, size, regs, head);
         perf_swevent_put_recursion_context(rctx);
-        local_irq_restore(irq_flags);
 }
 #endif