tracing/events: move declarations from trace directory to core include

In preparation to allowing trace events to happen in modules, we need
to move some of the local declarations in the kernel/trace directory
into include/linux.

This patch simply moves the declarations and performs no context changes.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

2 files changed, 1 insertions, 133 deletions

diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 1882846b7389..6bcdf4af9b2d 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -13,6 +13,7 @@
 #include <trace/power.h>
 
 #include <linux/trace_seq.h>
+#include <linux/ftrace_event.h>
 
 enum trace_type {
         __TRACE_FIRST_TYPE = 0,
@@ -44,20 +45,6 @@ enum trace_type {
 };
 
 /*
- * The trace entry - the most basic unit of tracing. This is what
- * is printed in the end as a single line in the trace output, such as:
- *
- *     bash-15816 [01]   235.197585: idle_cpu <- irq_enter
- */
-struct trace_entry {
-        unsigned char           type;
-        unsigned char           flags;
-        unsigned char           preempt_count;
-        int                     pid;
-        int                     tgid;
-};
-
-/*
  * Function trace entry - function address and parent function addres:
  */
 struct ftrace_entry {
@@ -265,8 +252,6 @@ struct trace_array_cpu {
         char                    comm[TASK_COMM_LEN];
 };
 
-struct trace_iterator;
-
 /*
  * The trace array - an array of per-CPU trace arrays. This is the
  * highest level data structure that individual tracers deal with.
@@ -341,15 +326,6 @@ extern void __ftrace_bad_type(void);
                 __ftrace_bad_type();                                    \
         } while (0)
 
-/* Return values for print_line callback */
-enum print_line_t {
-        TRACE_TYPE_PARTIAL_LINE = 0,    /* Retry after flushing the seq */
-        TRACE_TYPE_HANDLED      = 1,
-        TRACE_TYPE_UNHANDLED    = 2,    /* Relay to other output functions */
-        TRACE_TYPE_NO_CONSUME   = 3     /* Handled but ask to not consume */
-};
-
-
 /*
  * An option specific to a tracer. This is a boolean value.
  * The bit is the bit index that sets its value on the
@@ -428,31 +404,6 @@ struct tracer {
 
 #define TRACE_PIPE_ALL_CPU      -1
 
-/*
- * Trace iterator - used by printout routines who present trace
- * results to users and which routines might sleep, etc:
- */
-struct trace_iterator {
-        struct trace_array      *tr;
-        struct tracer           *trace;
-        void                    *private;
-        int                     cpu_file;
-        struct mutex            mutex;
-        struct ring_buffer_iter *buffer_iter[NR_CPUS];
-
-        /* The below is zeroed out in pipe_read */
-        struct trace_seq        seq;
-        struct trace_entry      *ent;
-        int                     cpu;
-        u64                     ts;
-
-        unsigned long           iter_flags;
-        loff_t                  pos;
-        long                    idx;
-
-        cpumask_var_t           started;
-};
-
 int tracer_init(struct tracer *t, struct trace_array *tr);
 int tracing_is_enabled(void);
 void trace_wake_up(void);
@@ -479,15 +430,6 @@ void trace_buffer_unlock_commit(struct trace_array *tr,
                                 struct ring_buffer_event *event,
                                 unsigned long flags, int pc);
 
-struct ring_buffer_event *
-trace_current_buffer_lock_reserve(unsigned char type, unsigned long len,
-                                  unsigned long flags, int pc);
-void trace_current_buffer_unlock_commit(struct ring_buffer_event *event,
-                                        unsigned long flags, int pc);
-void trace_nowake_buffer_unlock_commit(struct ring_buffer_event *event,
-                                        unsigned long flags, int pc);
-void trace_current_buffer_discard_commit(struct ring_buffer_event *event);
-
 struct trace_entry *tracing_get_trace_entry(struct trace_array *tr,
                                                 struct trace_array_cpu *data);
 
@@ -510,7 +452,6 @@ void tracing_sched_switch_trace(struct trace_array *tr,
                                 struct task_struct *prev,
                                 struct task_struct *next,
                                 unsigned long flags, int pc);
-void tracing_record_cmdline(struct task_struct *tsk);
 
 void tracing_sched_wakeup_trace(struct trace_array *tr,
                                 struct task_struct *wakee,
@@ -790,28 +731,6 @@ struct ftrace_event_field {
         int                     size;
 };
 
-struct ftrace_event_call {
-        char                    *name;
-        char                    *system;
-        struct dentry           *dir;
-        int                     enabled;
-        int                     (*regfunc)(void);
-        void                    (*unregfunc)(void);
-        int                     id;
-        int                     (*raw_init)(void);
-        int                     (*show_format)(struct trace_seq *s);
-        int                     (*define_fields)(void);
-        struct list_head        fields;
-        int                     n_preds;
-        struct filter_pred      **preds;
-
-#ifdef CONFIG_EVENT_PROFILE
-        atomic_t        profile_count;
-        int             (*profile_enable)(struct ftrace_event_call *);
-        void            (*profile_disable)(struct ftrace_event_call *);
-#endif
-};
-
 struct event_subsystem {
         struct list_head        list;
         const char              *name;
@@ -825,9 +744,6 @@ struct event_subsystem {
              (unsigned long)event < (unsigned long)__stop_ftrace_events; \
              event++)
 
-#define MAX_FILTER_PRED         8
-#define MAX_FILTER_STR_VAL      128
-
 struct filter_pred;
 
 typedef int (*filter_pred_fn_t) (struct filter_pred *pred, void *event);
@@ -845,9 +761,6 @@ struct filter_pred {
         int clear;
 };
 
-int trace_define_field(struct ftrace_event_call *call, char *type,
-                       char *name, int offset, int size);
-extern int init_preds(struct ftrace_event_call *call);
 extern void filter_free_pred(struct filter_pred *pred);
 extern void filter_print_preds(struct filter_pred **preds, int n_preds,
                                struct trace_seq *s);
@@ -855,13 +768,9 @@ extern int filter_parse(char **pbuf, struct filter_pred *pred);
 extern int filter_add_pred(struct ftrace_event_call *call,
                            struct filter_pred *pred);
 extern void filter_disable_preds(struct ftrace_event_call *call);
-extern int filter_match_preds(struct ftrace_event_call *call, void *rec);
 extern void filter_free_subsystem_preds(struct event_subsystem *system);
 extern int filter_add_subsystem_pred(struct event_subsystem *system,
                                      struct filter_pred *pred);
-extern int filter_current_check_discard(struct ftrace_event_call *call,
-                                        void *rec,
-                                        struct ring_buffer_event *event);
 
 static inline int
 filter_check_discard(struct ftrace_event_call *call, void *rec,
@@ -876,14 +785,6 @@ filter_check_discard(struct ftrace_event_call *call, void *rec,
         return 0;
 }
 
-#define __common_field(type, item)                                      \
-        ret = trace_define_field(event_call, #type, "common_" #item,    \
-                                 offsetof(typeof(field.ent), item),     \
-                                 sizeof(field.ent.item));               \
-        if (ret)                                                        \
-                return ret;
-
-void event_trace_printk(unsigned long ip, const char *fmt, ...);
 extern struct ftrace_event_call __start_ftrace_events[];
 extern struct ftrace_event_call __stop_ftrace_events[];
 
@@ -895,25 +796,6 @@ extern struct ftrace_event_call __stop_ftrace_events[];
 extern const char *__start___trace_bprintk_fmt[];
 extern const char *__stop___trace_bprintk_fmt[];
 
-/*
- * The double __builtin_constant_p is because gcc will give us an error
- * if we try to allocate the static variable to fmt if it is not a
- * constant. Even with the outer if statement optimizing out.
- */
-#define event_trace_printk(ip, fmt, args...)                            \
-do {                                                                    \
-        __trace_printk_check_format(fmt, ##args);                       \
-        tracing_record_cmdline(current);                                \
-        if (__builtin_constant_p(fmt)) {                                \
-                static const char *trace_printk_fmt                     \
-                  __attribute__((section("__trace_printk_fmt"))) =      \
-                        __builtin_constant_p(fmt) ? fmt : NULL;         \
-                                                                        \
-                __trace_bprintk(ip, trace_printk_fmt, ##args);          \
-        } else                                                          \
-                __trace_printk(ip, fmt, ##args);                        \
-} while (0)
-
 #undef TRACE_EVENT_FORMAT
 #define TRACE_EVENT_FORMAT(call, proto, args, fmt, tstruct, tpfmt)      \
         extern struct ftrace_event_call event_##call;
diff --git a/kernel/trace/trace_output.h b/kernel/trace/trace_output.h
index 5c7cbfb65c71..6e220a8e5706 100644
--- a/kernel/trace/trace_output.h
+++ b/kernel/trace/trace_output.h
@@ -4,18 +4,6 @@
 #include <linux/trace_seq.h>
 #include "trace.h"
 
-typedef enum print_line_t (*trace_print_func)(struct trace_iterator *iter,
-                                              int flags);
-
-struct trace_event {
-        struct hlist_node       node;
-        int                     type;
-        trace_print_func        trace;
-        trace_print_func        raw;
-        trace_print_func        hex;
-        trace_print_func        binary;
-};
-
 extern enum print_line_t
 trace_print_bprintk_msg_only(struct trace_iterator *iter);
 extern enum print_line_t
@@ -33,8 +21,6 @@ extern int trace_print_context(struct trace_iterator *iter);
 extern int trace_print_lat_context(struct trace_iterator *iter);
 
 extern struct trace_event *ftrace_find_event(int type);
-extern int register_ftrace_event(struct trace_event *event);
-extern int unregister_ftrace_event(struct trace_event *event);
 
 extern enum print_line_t trace_nop_print(struct trace_iterator *iter,
                                          int flags);