Merge branch 'perf/parse-events-4' of git://github.com/fweisbec/tracing into perf/core

Conflicts:
	tools/perf/Makefile

This tree from Frederic unifies the perf and trace-cmd trace event format
parsing code into a single library.

Powertop and other tools will also be able to make use of it.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

10 files changed, 297 insertions, 3274 deletions

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 398094c3d3c9..fa37cd53e9b9 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -149,7 +149,7 @@ endif
 
 ### --- END CONFIGURATION SECTION ---
 
-BASIC_CFLAGS = -Iutil/include -Iarch/$(ARCH)/include -I$(OUTPUT)/util -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE
+BASIC_CFLAGS = -Iutil/include -Iarch/$(ARCH)/include -I$(OUTPUT)/util -I$(EVENT_PARSE_DIR) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE
 BASIC_LDFLAGS =
 
 # Guard against environment variables
@@ -178,6 +178,17 @@ $(OUTPUT)python/perf.so: $(PYRF_OBJS) $(PYTHON_EXT_SRCS) $(PYTHON_EXT_DEPS)
 
 SCRIPTS = $(patsubst %.sh,%,$(SCRIPT_SH))
 
+EVENT_PARSE_DIR = ../lib/traceevent/
+
+ifeq ("$(origin O)", "command line")
+	EP_PATH=$(OUTPUT)/
+else
+	EP_PATH=$(EVENT_PARSE_DIR)/
+endif
+
+LIBPARSEVENT = $(EP_PATH)libtraceevent.a
+EP_LIB := -L$(EP_PATH) -ltraceevent
+
 #
 # Single 'perf' binary right now:
 #
@@ -300,6 +311,7 @@ LIB_H += util/cpumap.h
 LIB_H += util/top.h
 LIB_H += $(ARCH_INCLUDE)
 LIB_H += util/cgroup.h
+LIB_H += $(EVENT_PARSE_DIR)event-parse.h
 LIB_H += util/target.h
 
 LIB_OBJS += $(OUTPUT)util/abspath.o
@@ -398,7 +410,7 @@ BUILTIN_OBJS += $(OUTPUT)builtin-kvm.o
 BUILTIN_OBJS += $(OUTPUT)builtin-test.o
 BUILTIN_OBJS += $(OUTPUT)builtin-inject.o
 
-PERFLIBS = $(LIB_FILE)
+PERFLIBS = $(LIB_FILE) $(LIBPARSEVENT)
 
 # Files needed for the python binding, perf.so
 # pyrf is just an internal name needed for all those wrappers.
@@ -807,6 +819,10 @@ $(sort $(dir $(DIRECTORY_DEPS))):
 $(LIB_FILE): $(LIB_OBJS)
 	$(QUIET_AR)$(RM) $@ && $(AR) rcs $@ $(LIB_OBJS)
 
+# libparsevent.a
+$(LIBPARSEVENT):
+	make -C $(EVENT_PARSE_DIR) $(COMMAND_O) libtraceevent.a
+
 help:
 	@echo 'Perf make targets:'
 	@echo '  doc		- make *all* documentation (see below)'
diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c
index 39104c0beea3..547af48deb4f 100644
--- a/tools/perf/builtin-kmem.c
+++ b/tools/perf/builtin-kmem.c
@@ -192,7 +192,7 @@ static void insert_caller_stat(unsigned long call_site,
 }
 
 static void process_alloc_event(void *data,
-				struct event *event,
+				struct event_format *event,
 				int cpu,
 				u64 timestamp __used,
 				struct thread *thread __used,
@@ -253,7 +253,7 @@ static struct alloc_stat *search_alloc_stat(unsigned long ptr,
 }
 
 static void process_free_event(void *data,
-			       struct event *event,
+			       struct event_format *event,
 			       int cpu,
 			       u64 timestamp __used,
 			       struct thread *thread __used)
@@ -281,7 +281,7 @@ static void process_free_event(void *data,
 static void process_raw_event(union perf_event *raw_event __used, void *data,
 			      int cpu, u64 timestamp, struct thread *thread)
 {
-	struct event *event;
+	struct event_format *event;
 	int type;
 
 	type = trace_parse_common_type(data);
diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c
index 12c814838993..fd53319de20d 100644
--- a/tools/perf/builtin-lock.c
+++ b/tools/perf/builtin-lock.c
@@ -356,25 +356,25 @@ struct trace_release_event {
 
 struct trace_lock_handler {
 	void (*acquire_event)(struct trace_acquire_event *,
-			      struct event *,
+			      struct event_format *,
 			      int cpu,
 			      u64 timestamp,
 			      struct thread *thread);
 
 	void (*acquired_event)(struct trace_acquired_event *,
-			       struct event *,
+			       struct event_format *,
 			       int cpu,
 			       u64 timestamp,
 			       struct thread *thread);
 
 	void (*contended_event)(struct trace_contended_event *,
-				struct event *,
+				struct event_format *,
 				int cpu,
 				u64 timestamp,
 				struct thread *thread);
 
 	void (*release_event)(struct trace_release_event *,
-			      struct event *,
+			      struct event_format *,
 			      int cpu,
 			      u64 timestamp,
 			      struct thread *thread);
@@ -416,7 +416,7 @@ enum acquire_flags {
 
 static void
 report_lock_acquire_event(struct trace_acquire_event *acquire_event,
-			struct event *__event __used,
+			struct event_format *__event __used,
 			int cpu __used,
 			u64 timestamp __used,
 			struct thread *thread __used)
@@ -480,7 +480,7 @@ end:
 
 static void
 report_lock_acquired_event(struct trace_acquired_event *acquired_event,
-			 struct event *__event __used,
+			 struct event_format *__event __used,
 			 int cpu __used,
 			 u64 timestamp __used,
 			 struct thread *thread __used)
@@ -536,7 +536,7 @@ end:
 
 static void
 report_lock_contended_event(struct trace_contended_event *contended_event,
-			  struct event *__event __used,
+			  struct event_format *__event __used,
 			  int cpu __used,
 			  u64 timestamp __used,
 			  struct thread *thread __used)
@@ -583,7 +583,7 @@ end:
 
 static void
 report_lock_release_event(struct trace_release_event *release_event,
-			struct event *__event __used,
+			struct event_format *__event __used,
 			int cpu __used,
 			u64 timestamp __used,
 			struct thread *thread __used)
@@ -647,7 +647,7 @@ static struct trace_lock_handler *trace_handler;
 
 static void
 process_lock_acquire_event(void *data,
-			   struct event *event __used,
+			   struct event_format *event __used,
 			   int cpu __used,
 			   u64 timestamp __used,
 			   struct thread *thread __used)
@@ -666,7 +666,7 @@ process_lock_acquire_event(void *data,
 
 static void
 process_lock_acquired_event(void *data,
-			    struct event *event __used,
+			    struct event_format *event __used,
 			    int cpu __used,
 			    u64 timestamp __used,
 			    struct thread *thread __used)
@@ -684,7 +684,7 @@ process_lock_acquired_event(void *data,
 
 static void
 process_lock_contended_event(void *data,
-			     struct event *event __used,
+			     struct event_format *event __used,
 			     int cpu __used,
 			     u64 timestamp __used,
 			     struct thread *thread __used)
@@ -702,7 +702,7 @@ process_lock_contended_event(void *data,
 
 static void
 process_lock_release_event(void *data,
-			   struct event *event __used,
+			   struct event_format *event __used,
 			   int cpu __used,
 			   u64 timestamp __used,
 			   struct thread *thread __used)
@@ -721,7 +721,7 @@ process_lock_release_event(void *data,
 static void
 process_raw_event(void *data, int cpu, u64 timestamp, struct thread *thread)
 {
-	struct event *event;
+	struct event_format *event;
 	int type;
 
 	type = trace_parse_common_type(data);
diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c
index 1cad3af4bf4c..b125e07eb399 100644
--- a/tools/perf/builtin-sched.c
+++ b/tools/perf/builtin-sched.c
@@ -728,34 +728,34 @@ struct trace_migrate_task_event {
 struct trace_sched_handler {
 	void (*switch_event)(struct trace_switch_event *,
 			     struct machine *,
-			     struct event *,
+			     struct event_format *,
 			     int cpu,
 			     u64 timestamp,
 			     struct thread *thread);
 
 	void (*runtime_event)(struct trace_runtime_event *,
 			      struct machine *,
-			      struct event *,
+			      struct event_format *,
 			      int cpu,
 			      u64 timestamp,
 			      struct thread *thread);
 
 	void (*wakeup_event)(struct trace_wakeup_event *,
 			     struct machine *,
-			     struct event *,
+			     struct event_format *,
 			     int cpu,
 			     u64 timestamp,
 			     struct thread *thread);
 
 	void (*fork_event)(struct trace_fork_event *,
-			   struct event *,
+			   struct event_format *,
 			   int cpu,
 			   u64 timestamp,
 			   struct thread *thread);
 
 	void (*migrate_task_event)(struct trace_migrate_task_event *,
 			   struct machine *machine,
-			   struct event *,
+			   struct event_format *,
 			   int cpu,
 			   u64 timestamp,
 			   struct thread *thread);
@@ -765,7 +765,7 @@ struct trace_sched_handler {
 static void
 replay_wakeup_event(struct trace_wakeup_event *wakeup_event,
 		    struct machine *machine __used,
-		    struct event *event,
+		    struct event_format *event,
 		    int cpu __used,
 		    u64 timestamp __used,
 		    struct thread *thread __used)
@@ -792,7 +792,7 @@ static u64 cpu_last_switched[MAX_CPUS];
 static void
 replay_switch_event(struct trace_switch_event *switch_event,
 		    struct machine *machine __used,
-		    struct event *event,
+		    struct event_format *event,
 		    int cpu,
 		    u64 timestamp,
 		    struct thread *thread __used)
@@ -835,7 +835,7 @@ replay_switch_event(struct trace_switch_event *switch_event,
 
 static void
 replay_fork_event(struct trace_fork_event *fork_event,
-		  struct event *event,
+		  struct event_format *event,
 		  int cpu __used,
 		  u64 timestamp __used,
 		  struct thread *thread __used)
@@ -944,7 +944,7 @@ static void thread_atoms_insert(struct thread *thread)
 
 static void
 latency_fork_event(struct trace_fork_event *fork_event __used,
-		   struct event *event __used,
+		   struct event_format *event __used,
 		   int cpu __used,
 		   u64 timestamp __used,
 		   struct thread *thread __used)
@@ -1026,7 +1026,7 @@ add_sched_in_event(struct work_atoms *atoms, u64 timestamp)
 static void
 latency_switch_event(struct trace_switch_event *switch_event,
 		     struct machine *machine,
-		     struct event *event __used,
+		     struct event_format *event __used,
 		     int cpu,
 		     u64 timestamp,
 		     struct thread *thread __used)
@@ -1079,7 +1079,7 @@ latency_switch_event(struct trace_switch_event *switch_event,
 static void
 latency_runtime_event(struct trace_runtime_event *runtime_event,
 		     struct machine *machine,
-		     struct event *event __used,
+		     struct event_format *event __used,
 		     int cpu,
 		     u64 timestamp,
 		     struct thread *this_thread __used)
@@ -1102,7 +1102,7 @@ latency_runtime_event(struct trace_runtime_event *runtime_event,
 static void
 latency_wakeup_event(struct trace_wakeup_event *wakeup_event,
 		     struct machine *machine,
-		     struct event *__event __used,
+		     struct event_format *__event __used,
 		     int cpu __used,
 		     u64 timestamp,
 		     struct thread *thread __used)
@@ -1150,7 +1150,7 @@ latency_wakeup_event(struct trace_wakeup_event *wakeup_event,
 static void
 latency_migrate_task_event(struct trace_migrate_task_event *migrate_task_event,
 		     struct machine *machine,
-		     struct event *__event __used,
+		     struct event_format *__event __used,
 		     int cpu __used,
 		     u64 timestamp,
 		     struct thread *thread __used)
@@ -1361,7 +1361,7 @@ static struct trace_sched_handler *trace_handler;
 
 static void
 process_sched_wakeup_event(struct perf_tool *tool __used,
-			   struct event *event,
+			   struct event_format *event,
 			   struct perf_sample *sample,
 			   struct machine *machine,
 			   struct thread *thread)
@@ -1398,7 +1398,7 @@ static char next_shortname2 = '0';
 static void
 map_switch_event(struct trace_switch_event *switch_event,
 		 struct machine *machine,
-		 struct event *event __used,
+		 struct event_format *event __used,
 		 int this_cpu,
 		 u64 timestamp,
 		 struct thread *thread __used)
@@ -1476,7 +1476,7 @@ map_switch_event(struct trace_switch_event *switch_event,
 
 static void
 process_sched_switch_event(struct perf_tool *tool __used,
-			   struct event *event,
+			   struct event_format *event,
 			   struct perf_sample *sample,
 			   struct machine *machine,
 			   struct thread *thread)
@@ -1512,7 +1512,7 @@ process_sched_switch_event(struct perf_tool *tool __used,
 
 static void
 process_sched_runtime_event(struct perf_tool *tool __used,
-			    struct event *event,
+			    struct event_format *event,
 			    struct perf_sample *sample,
 			    struct machine *machine,
 			    struct thread *thread)
@@ -1532,7 +1532,7 @@ process_sched_runtime_event(struct perf_tool *tool __used,
 
 static void
 process_sched_fork_event(struct perf_tool *tool __used,
-			 struct event *event,
+			 struct event_format *event,
 			 struct perf_sample *sample,
 			 struct machine *machine __used,
 			 struct thread *thread)
@@ -1554,7 +1554,7 @@ process_sched_fork_event(struct perf_tool *tool __used,
 
 static void
 process_sched_exit_event(struct perf_tool *tool __used,
-			 struct event *event,
+			 struct event_format *event,
 			 struct perf_sample *sample __used,
 			 struct machine *machine __used,
 			 struct thread *thread __used)
@@ -1565,7 +1565,7 @@ process_sched_exit_event(struct perf_tool *tool __used,
 
 static void
 process_sched_migrate_task_event(struct perf_tool *tool __used,
-				 struct event *event,
+				 struct event_format *event,
 				 struct perf_sample *sample,
 				 struct machine *machine,
 				 struct thread *thread)
@@ -1586,7 +1586,7 @@ process_sched_migrate_task_event(struct perf_tool *tool __used,
 						  sample->time, thread);
 }
 
-typedef void (*tracepoint_handler)(struct perf_tool *tool, struct event *event,
+typedef void (*tracepoint_handler)(struct perf_tool *tool, struct event_format *event,
 				   struct perf_sample *sample,
 				   struct machine *machine,
 				   struct thread *thread);
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index d4ce733b9eba..8e395a538eb9 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -261,7 +261,7 @@ static void print_sample_start(struct perf_sample *sample,
 			       struct perf_event_attr *attr)
 {
 	int type;
-	struct event *event;
+	struct event_format *event;
 	const char *evname = NULL;
 	unsigned long secs;
 	unsigned long usecs;
diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c
index c2623c6f9b51..acb9795286c4 100644
--- a/tools/perf/util/scripting-engines/trace-event-python.c
+++ b/tools/perf/util/scripting-engines/trace-event-python.c
@@ -37,7 +37,7 @@ PyMODINIT_FUNC initperf_trace_context(void);
 #define FTRACE_MAX_EVENT				\
 	((1 << (sizeof(unsigned short) * 8)) - 1)
 
-struct event *events[FTRACE_MAX_EVENT];
+struct event_format *events[FTRACE_MAX_EVENT];
 
 #define MAX_FIELDS	64
 #define N_COMMON_FIELDS	7
@@ -136,7 +136,7 @@ static void define_field(enum print_arg_type field_type,
 	Py_DECREF(t);
 }
 
-static void define_event_symbols(struct event *event,
+static void define_event_symbols(struct event_format *event,
 				 const char *ev_name,
 				 struct print_arg *args)
 {
@@ -178,6 +178,10 @@ static void define_event_symbols(struct event *event,
 		define_event_symbols(event, ev_name, args->op.right);
 		break;
 	default:
+		/* gcc warns for these? */
+	case PRINT_BSTRING:
+	case PRINT_DYNAMIC_ARRAY:
+	case PRINT_FUNC:
 		/* we should warn... */
 		return;
 	}
@@ -186,10 +190,10 @@ static void define_event_symbols(struct event *event,
 		define_event_symbols(event, ev_name, args->next);
 }
 
-static inline struct event *find_cache_event(int type)
+static inline struct event_format *find_cache_event(int type)
 {
 	static char ev_name[256];
-	struct event *event;
+	struct event_format *event;
 
 	if (events[type])
 		return events[type];
@@ -216,7 +220,7 @@ static void python_process_event(union perf_event *pevent __unused,
 	struct format_field *field;
 	unsigned long long val;
 	unsigned long s, ns;
-	struct event *event;
+	struct event_format *event;
 	unsigned n = 0;
 	int type;
 	int pid;
@@ -436,7 +440,7 @@ out:
 
 static int python_generate_script(const char *outfile)
 {
-	struct event *event = NULL;
+	struct event_format *event = NULL;
 	struct format_field *f;
 	char fname[PATH_MAX];
 	int not_first, count;
diff --git a/tools/perf/util/trace-event-info.c b/tools/perf/util/trace-event-info.c
index fc22cf5c605f..a8d81c35ef66 100644
--- a/tools/perf/util/trace-event-info.c
+++ b/tools/perf/util/trace-event-info.c
@@ -68,7 +68,7 @@ struct events {
 };
 
 
-void *malloc_or_die(unsigned int size)
+static void *malloc_or_die(unsigned int size)
 {
 	void *data;
 
@@ -448,6 +448,8 @@ static void tracing_data_header(void)
 	else
 		buf[0] = 0;
 
+	read_trace_init(buf[0], buf[0]);
+
 	write_or_die(buf, 1);
 
 	/* save size of long */
diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index dfd1bd8371a4..df2fddbf0cd2 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -17,2169 +17,305 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  *
  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- *
- *  The parts for function graph printing was taken and modified from the
- *  Linux Kernel that were written by Frederic Weisbecker.
  */
-
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <ctype.h>
 #include <errno.h>
 
 #include "../perf.h"
 #include "util.h"
 #include "trace-event.h"
 
-int header_page_ts_offset;
-int header_page_ts_size;
-int header_page_size_offset;
 int header_page_size_size;
-int header_page_overwrite_offset;
-int header_page_overwrite_size;
+int header_page_ts_size;
 int header_page_data_offset;
-int header_page_data_size;
-
-bool latency_format;
-
-static char *input_buf;
-static unsigned long long input_buf_ptr;
-static unsigned long long input_buf_siz;
-
-static int cpus;
-static int long_size;
-static int is_flag_field;
-static int is_symbolic_field;
-
-static struct format_field *
-find_any_field(struct event *event, const char *name);
-
-static void init_input_buf(char *buf, unsigned long long size)
-{
-	input_buf = buf;
-	input_buf_siz = size;
-	input_buf_ptr = 0;
-}
-
-struct cmdline {
-	char *comm;
-	int pid;
-};
-
-static struct cmdline *cmdlines;
-static int cmdline_count;
-
-static int cmdline_cmp(const void *a, const void *b)
-{
-	const struct cmdline *ca = a;
-	const struct cmdline *cb = b;
-
-	if (ca->pid < cb->pid)
-		return -1;
-	if (ca->pid > cb->pid)
-		return 1;
-
-	return 0;
-}
 
-void parse_cmdlines(char *file, int size __unused)
-{
-	struct cmdline_list {
-		struct cmdline_list	*next;
-		char			*comm;
-		int			pid;
-	} *list = NULL, *item;
-	char *line;
-	char *next = NULL;
-	int i;
+struct pevent *perf_pevent;
+static struct pevent *pevent;
 
-	line = strtok_r(file, "\n", &next);
-	while (line) {
-		item = malloc_or_die(sizeof(*item));
-		sscanf(line, "%d %as", &item->pid,
-		       (float *)(void *)&item->comm); /* workaround gcc warning */
-		item->next = list;
-		list = item;
-		line = strtok_r(NULL, "\n", &next);
-		cmdline_count++;
-	}
-
-	cmdlines = malloc_or_die(sizeof(*cmdlines) * cmdline_count);
-
-	i = 0;
-	while (list) {
-		cmdlines[i].pid = list->pid;
-		cmdlines[i].comm = list->comm;
-		i++;
-		item = list;
-		list = list->next;
-		free(item);
-	}
-
-	qsort(cmdlines, cmdline_count, sizeof(*cmdlines), cmdline_cmp);
-}
-
-static struct func_map {
-	unsigned long long		addr;
-	char				*func;
-	char				*mod;
-} *func_list;
-static unsigned int func_count;
-
-static int func_cmp(const void *a, const void *b)
-{
-	const struct func_map *fa = a;
-	const struct func_map *fb = b;
-
-	if (fa->addr < fb->addr)
-		return -1;
-	if (fa->addr > fb->addr)
-		return 1;
-
-	return 0;
-}
-
-void parse_proc_kallsyms(char *file, unsigned int size __unused)
-{
-	struct func_list {
-		struct func_list	*next;
-		unsigned long long	addr;
-		char			*func;
-		char			*mod;
-	} *list = NULL, *item;
-	char *line;
-	char *next = NULL;
-	char *addr_str;
-	char ch;
-	int ret __used;
-	int i;
-
-	line = strtok_r(file, "\n", &next);
-	while (line) {
-		item = malloc_or_die(sizeof(*item));
-		item->mod = NULL;
-		ret = sscanf(line, "%as %c %as\t[%as",
-			     (float *)(void *)&addr_str, /* workaround gcc warning */
-			     &ch,
-			     (float *)(void *)&item->func,
-			     (float *)(void *)&item->mod);
-		item->addr = strtoull(addr_str, NULL, 16);
-		free(addr_str);
-
-		/* truncate the extra ']' */
-		if (item->mod)
-			item->mod[strlen(item->mod) - 1] = 0;
-
-
-		item->next = list;
-		list = item;
-		line = strtok_r(NULL, "\n", &next);
-		func_count++;
-	}
-
-	func_list = malloc_or_die(sizeof(*func_list) * (func_count + 1));
-
-	i = 0;
-	while (list) {
-		func_list[i].func = list->func;
-		func_list[i].addr = list->addr;
-		func_list[i].mod = list->mod;
-		i++;
-		item = list;
-		list = list->next;
-		free(item);
-	}
-
-	qsort(func_list, func_count, sizeof(*func_list), func_cmp);
-
-	/*
-	 * Add a special record at the end.
-	 */
-	func_list[func_count].func = NULL;
-	func_list[func_count].addr = 0;
-	func_list[func_count].mod = NULL;
-}
+bool latency_format;
 
-/*
- * We are searching for a record in between, not an exact
- * match.
- */
-static int func_bcmp(const void *a, const void *b)
+int read_trace_init(int file_bigendian, int host_bigendian)
 {
-	const struct func_map *fa = a;
-	const struct func_map *fb = b;
-
-	if ((fa->addr == fb->addr) ||
-
-	    (fa->addr > fb->addr &&
-	     fa->addr < (fb+1)->addr))
+	if (pevent)
 		return 0;
 
-	if (fa->addr < fb->addr)
-		return -1;
-
-	return 1;
-}
-
-static struct func_map *find_func(unsigned long long addr)
-{
-	struct func_map *func;
-	struct func_map key;
-
-	key.addr = addr;
-
-	func = bsearch(&key, func_list, func_count, sizeof(*func_list),
-		       func_bcmp);
-
-	return func;
-}
-
-void print_funcs(void)
-{
-	int i;
-
-	for (i = 0; i < (int)func_count; i++) {
-		printf("%016llx %s",
-		       func_list[i].addr,
-		       func_list[i].func);
-		if (func_list[i].mod)
-			printf(" [%s]\n", func_list[i].mod);
-		else
-			printf("\n");
-	}
-}
+	perf_pevent = pevent_alloc();
+	pevent = perf_pevent;
 
-static struct printk_map {
-	unsigned long long		addr;
-	char				*printk;
-} *printk_list;
-static unsigned int printk_count;
-
-static int printk_cmp(const void *a, const void *b)
-{
-	const struct func_map *fa = a;
-	const struct func_map *fb = b;
-
-	if (fa->addr < fb->addr)
-		return -1;
-	if (fa->addr > fb->addr)
-		return 1;
+	pevent_set_flag(pevent, PEVENT_NSEC_OUTPUT);
+	pevent_set_file_bigendian(pevent, file_bigendian);
+	pevent_set_host_bigendian(pevent, host_bigendian);
 
 	return 0;
 }
 
-static struct printk_map *find_printk(unsigned long long addr)
-{
-	struct printk_map *printk;
-	struct printk_map key;
-
-	key.addr = addr;
-
-	printk = bsearch(&key, printk_list, printk_count, sizeof(*printk_list),
-			 printk_cmp);
-
-	return printk;
-}
-
-void parse_ftrace_printk(char *file, unsigned int size __unused)
-{
-	struct printk_list {
-		struct printk_list	*next;
-		unsigned long long	addr;
-		char			*printk;
-	} *list = NULL, *item;
-	char *line;
-	char *next = NULL;
-	char *addr_str;
-	int i;
-
-	line = strtok_r(file, "\n", &next);
-	while (line) {
-		addr_str = strsep(&line, ":");
-		if (!line) {
-			warning("error parsing print strings");
-			break;
-		}
-		item = malloc_or_die(sizeof(*item));
-		item->addr = strtoull(addr_str, NULL, 16);
-		/* fmt still has a space, skip it */
-		item->printk = strdup(line+1);
-		item->next = list;
-		list = item;
-		line = strtok_r(NULL, "\n", &next);
-		printk_count++;
-	}
-
-	printk_list = malloc_or_die(sizeof(*printk_list) * printk_count + 1);
-
-	i = 0;
-	while (list) {
-		printk_list[i].printk = list->printk;
-		printk_list[i].addr = list->addr;
-		i++;
-		item = list;
-		list = list->next;
-		free(item);
-	}
-
-	qsort(printk_list, printk_count, sizeof(*printk_list), printk_cmp);
-}
-
-void print_printk(void)
-{
-	int i;
-
-	for (i = 0; i < (int)printk_count; i++) {
-		printf("%016llx %s\n",
-		       printk_list[i].addr,
-		       printk_list[i].printk);
-	}
-}
-
-static struct event *alloc_event(void)
-{
-	struct event *event;
-
-	event = malloc_or_die(sizeof(*event));
-	memset(event, 0, sizeof(*event));
-
-	return event;
-}
-
-enum event_type {
-	EVENT_ERROR,
-	EVENT_NONE,
-	EVENT_SPACE,
-	EVENT_NEWLINE,
-	EVENT_OP,
-	EVENT_DELIM,
-	EVENT_ITEM,
-	EVENT_DQUOTE,
-	EVENT_SQUOTE,
-};
-
-static struct event *event_list;
-
-static void add_event(struct event *event)
+static int get_common_field(struct scripting_context *context,
+			    int *offset, int *size, const char *type)
 {
-	event->next = event_list;
-	event_list = event;
-}
-
-static int event_item_type(enum event_type type)
-{
-	switch (type) {
-	case EVENT_ITEM ... EVENT_SQUOTE:
-		return 1;
-	case EVENT_ERROR ... EVENT_DELIM:
-	default:
-		return 0;
-	}
-}
-
-static void free_arg(struct print_arg *arg)
-{
-	if (!arg)
-		return;
-
-	switch (arg->type) {
-	case PRINT_ATOM:
-		if (arg->atom.atom)
-			free(arg->atom.atom);
-		break;
-	case PRINT_NULL:
-	case PRINT_FIELD ... PRINT_OP:
-	default:
-		/* todo */
-		break;
-	}
-
-	free(arg);
-}
-
-static enum event_type get_type(int ch)
-{
-	if (ch == '\n')
-		return EVENT_NEWLINE;
-	if (isspace(ch))
-		return EVENT_SPACE;
-	if (isalnum(ch) || ch == '_')
-		return EVENT_ITEM;
-	if (ch == '\'')
-		return EVENT_SQUOTE;
-	if (ch == '"')
-		return EVENT_DQUOTE;
-	if (!isprint(ch))
-		return EVENT_NONE;
-	if (ch == '(' || ch == ')' || ch == ',')
-		return EVENT_DELIM;
-
-	return EVENT_OP;
-}
-
-static int __read_char(void)
-{
-	if (input_buf_ptr >= input_buf_siz)
-		return -1;
-
-	return input_buf[input_buf_ptr++];
-}
-
-static int __peek_char(void)
-{
-	if (input_buf_ptr >= input_buf_siz)
-		return -1;
-
-	return input_buf[input_buf_ptr];
-}
-
-static enum event_type __read_token(char **tok)
-{
-	char buf[BUFSIZ];
-	int ch, last_ch, quote_ch, next_ch;
-	int i = 0;
-	int tok_size = 0;
-	enum event_type type;
-
-	*tok = NULL;
-
-
-	ch = __read_char();
-	if (ch < 0)
-		return EVENT_NONE;
-
-	type = get_type(ch);
-	if (type == EVENT_NONE)
-		return type;
-
-	buf[i++] = ch;
-
-	switch (type) {
-	case EVENT_NEWLINE:
-	case EVENT_DELIM:
-		*tok = malloc_or_die(2);
-		(*tok)[0] = ch;
-		(*tok)[1] = 0;
-		return type;
-
-	case EVENT_OP:
-		switch (ch) {
-		case '-':
-			next_ch = __peek_char();
-			if (next_ch == '>') {
-				buf[i++] = __read_char();
-				break;
-			}
-			/* fall through */
-		case '+':
-		case '|':
-		case '&':
-		case '>':
-		case '<':
-			last_ch = ch;
-			ch = __peek_char();
-			if (ch != last_ch)
-				goto test_equal;
-			buf[i++] = __read_char();
-			switch (last_ch) {
-			case '>':
-			case '<':
-				goto test_equal;
-			default:
-				break;
-			}
-			break;
-		case '!':
-		case '=':
-			goto test_equal;
-		default: /* what should we do instead? */
-			break;
-		}
-		buf[i] = 0;
-		*tok = strdup(buf);
-		return type;
-
- test_equal:
-		ch = __peek_char();
-		if (ch == '=')
-			buf[i++] = __read_char();
-		break;
-
-	case EVENT_DQUOTE:
-	case EVENT_SQUOTE:
-		/* don't keep quotes */
-		i--;
-		quote_ch = ch;
-		last_ch = 0;
-		do {
-			if (i == (BUFSIZ - 1)) {
-				buf[i] = 0;
-				if (*tok) {
-					*tok = realloc(*tok, tok_size + BUFSIZ);
-					if (!*tok)
-						return EVENT_NONE;
-					strcat(*tok, buf);
-				} else
-					*tok = strdup(buf);
-
-				if (!*tok)
-					return EVENT_NONE;
-				tok_size += BUFSIZ;
-				i = 0;
-			}
-			last_ch = ch;
-			ch = __read_char();
-			buf[i++] = ch;
-			/* the '\' '\' will cancel itself */
-			if (ch == '\\' && last_ch == '\\')
-				last_ch = 0;
-		} while (ch != quote_ch || last_ch == '\\');
-		/* remove the last quote */
-		i--;
-		goto out;
-
-	case EVENT_ERROR ... EVENT_SPACE:
-	case EVENT_ITEM:
-	default:
-		break;
-	}
-
-	while (get_type(__peek_char()) == type) {
-		if (i == (BUFSIZ - 1)) {
-			buf[i] = 0;
-			if (*tok) {
-				*tok = realloc(*tok, tok_size + BUFSIZ);
-				if (!*tok)
-					return EVENT_NONE;
-				strcat(*tok, buf);
-			} else
-				*tok = strdup(buf);
-
-			if (!*tok)
-				return EVENT_NONE;
-			tok_size += BUFSIZ;
-			i = 0;
-		}
-		ch = __read_char();
-		buf[i++] = ch;
-	}
-
- out:
-	buf[i] = 0;
-	if (*tok) {
-		*tok = realloc(*tok, tok_size + i);
-		if (!*tok)
-			return EVENT_NONE;
-		strcat(*tok, buf);
-	} else
-		*tok = strdup(buf);
-	if (!*tok)
-		return EVENT_NONE;
-
-	return type;
-}
-
-static void free_token(char *tok)
-{
-	if (tok)
-		free(tok);
-}
-
-static enum event_type read_token(char **tok)
-{
-	enum event_type type;
-
-	for (;;) {
-		type = __read_token(tok);
-		if (type != EVENT_SPACE)
-			return type;
-
-		free_token(*tok);
-	}
-
-	/* not reached */
-	return EVENT_NONE;
-}
-
-/* no newline */
-static enum event_type read_token_item(char **tok)
-{
-	enum event_type type;
-
-	for (;;) {
-		type = __read_token(tok);
-		if (type != EVENT_SPACE && type != EVENT_NEWLINE)
-			return type;
-
-		free_token(*tok);
-	}
-
-	/* not reached */
-	return EVENT_NONE;
-}
-
-static int test_type(enum event_type type, enum event_type expect)
-{
-	if (type != expect) {
-		warning("Error: expected type %d but read %d",
-		    expect, type);
-		return -1;
-	}
-	return 0;
-}
+	struct event_format *event;
+	struct format_field *field;
 
-static int __test_type_token(enum event_type type, char *token,
-			     enum event_type expect, const char *expect_tok,
-			     bool warn)
-{
-	if (type != expect) {
-		if (warn)
-			warning("Error: expected type %d but read %d",
-				expect, type);
-		return -1;
-	}
+	if (!*size) {
+		if (!pevent->events)
+			return 0;
 
-	if (strcmp(token, expect_tok) != 0) {
-		if (warn)
-			warning("Error: expected '%s' but read '%s'",
-				expect_tok, token);
-		return -1;
+		event = pevent->events[0];
+		field = pevent_find_common_field(event, type);
+		if (!field)
+			return 0;
+		*offset = field->offset;
+		*size = field->size;
 	}
-	return 0;
-}
 
-static int test_type_token(enum event_type type, char *token,
-			   enum event_type expect, const char *expect_tok)
-{
-	return __test_type_token(type, token, expect, expect_tok, true);
+	return pevent_read_number(pevent, context->event_data + *offset, *size);
 }
 
-static int __read_expect_type(enum event_type expect, char **tok, int newline_ok)
-{
-	enum event_type type;
-
-	if (newline_ok)
-		type = read_token(tok);
-	else
-		type = read_token_item(tok);
-	return test_type(type, expect);
-}
-
-static int read_expect_type(enum event_type expect, char **tok)
-{
-	return __read_expect_type(expect, tok, 1);
-}
-
-static int __read_expected(enum event_type expect, const char *str,
-			   int newline_ok, bool warn)
+int common_lock_depth(struct scripting_context *context)
 {
-	enum event_type type;
-	char *token;
+	static int offset;
+	static int size;
 	int ret;
 
-	if (newline_ok)
-		type = read_token(&token);
-	else
-		type = read_token_item(&token);
-
-	ret = __test_type_token(type, token, expect, str, warn);
-
-	free_token(token);
+	ret = get_common_field(context, &size, &offset,
+			       "common_lock_depth");
+	if (ret < 0)
+		return -1;
 
 	return ret;
 }
 
-static int read_expected(enum event_type expect, const char *str)
-{
-	return __read_expected(expect, str, 1, true);
-}
-
-static int read_expected_item(enum event_type expect, const char *str)
-{
-	return __read_expected(expect, str, 0, true);
-}
-
-static char *event_read_name(void)
-{
-	char *token;
-
-	if (read_expected(EVENT_ITEM, "name") < 0)
-		return NULL;
-
-	if (read_expected(EVENT_OP, ":") < 0)
-		return NULL;
-
-	if (read_expect_type(EVENT_ITEM, &token) < 0)
-		goto fail;
-
-	return token;
-
- fail:
-	free_token(token);
-	return NULL;
-}
-
-static int event_read_id(void)
+int common_flags(struct scripting_context *context)
 {
-	char *token;
-	int id = -1;
-
-	if (read_expected_item(EVENT_ITEM, "ID") < 0)
-		return -1;
+	static int offset;
+	static int size;
+	int ret;
 
-	if (read_expected(EVENT_OP, ":") < 0)
+	ret = get_common_field(context, &size, &offset,
+			       "common_flags");
+	if (ret < 0)
 		return -1;
 
-	if (read_expect_type(EVENT_ITEM, &token) < 0)
-		goto free;
-
-	id = strtoul(token, NULL, 0);
-
- free:
-	free_token(token);
-	return id;
-}
-
-static int field_is_string(struct format_field *field)
-{
-	if ((field->flags & FIELD_IS_ARRAY) &&
-	    (!strstr(field->type, "char") || !strstr(field->type, "u8") ||
-	     !strstr(field->type, "s8")))
-		return 1;
-
-	return 0;
-}
-
-static int field_is_dynamic(struct format_field *field)
-{
-	if (!strncmp(field->type, "__data_loc", 10))
-		return 1;
-
-	return 0;
-}
-
-static int event_read_fields(struct event *event, struct format_field **fields)
-{
-	struct format_field *field = NULL;
-	enum event_type type;
-	char *token;
-	char *last_token;
-	int count = 0;
-
-	do {
-		type = read_token(&token);
-		if (type == EVENT_NEWLINE) {
-			free_token(token);
-			return count;
-		}
-
-		count++;
-
-		if (test_type_token(type, token, EVENT_ITEM, "field"))
-			goto fail;
-		free_token(token);
-
-		type = read_token(&token);
-		/*
-		 * The ftrace fields may still use the "special" name.
-		 * Just ignore it.
-		 */
-		if (event->flags & EVENT_FL_ISFTRACE &&
-		    type == EVENT_ITEM && strcmp(token, "special") == 0) {
-			free_token(token);
-			type = read_token(&token);
-		}
-
-		if (test_type_token(type, token, EVENT_OP, ":") < 0)
-			return -1;
-
-		if (read_expect_type(EVENT_ITEM, &token) < 0)
-			goto fail;
-
-		last_token = token;
-
-		field = malloc_or_die(sizeof(*field));
-		memset(field, 0, sizeof(*field));
-
-		/* read the rest of the type */
-		for (;;) {
-			type = read_token(&token);
-			if (type == EVENT_ITEM ||
-			    (type == EVENT_OP && strcmp(token, "*") == 0) ||
-			    /*
-			     * Some of the ftrace fields are broken and have
-			     * an illegal "." in them.
-			     */
-			    (event->flags & EVENT_FL_ISFTRACE &&
-			     type == EVENT_OP && strcmp(token, ".") == 0)) {
-
-				if (strcmp(token, "*") == 0)
-					field->flags |= FIELD_IS_POINTER;
-
-				if (field->type) {
-					field->type = realloc(field->type,
-							      strlen(field->type) +
-							      strlen(last_token) + 2);
-					strcat(field->type, " ");
-					strcat(field->type, last_token);
-				} else
-					field->type = last_token;
-				last_token = token;
-				continue;
-			}
-
-			break;
-		}
-
-		if (!field->type) {
-			die("no type found");
-			goto fail;
-		}
-		field->name = last_token;
-
-		if (test_type(type, EVENT_OP))
-			goto fail;
-
-		if (strcmp(token, "[") == 0) {
-			enum event_type last_type = type;
-			char *brackets = token;
-			int len;
-
-			field->flags |= FIELD_IS_ARRAY;
-
-			type = read_token(&token);
-		        while (strcmp(token, "]") != 0) {
-				if (last_type == EVENT_ITEM &&
-				    type == EVENT_ITEM)
-					len = 2;
-				else
-					len = 1;
-				last_type = type;
-
-				brackets = realloc(brackets,
-						   strlen(brackets) +
-						   strlen(token) + len);
-				if (len == 2)
-					strcat(brackets, " ");
-				strcat(brackets, token);
-				free_token(token);
-				type = read_token(&token);
-				if (type == EVENT_NONE) {
-					die("failed to find token");
-					goto fail;
-				}
-			}
-
-			free_token(token);
-
-			brackets = realloc(brackets, strlen(brackets) + 2);
-			strcat(brackets, "]");
-
-			/* add brackets to type */
-
-			type = read_token(&token);
-			/*
-			 * If the next token is not an OP, then it is of
-			 * the format: type [] item;
-			 */
-			if (type == EVENT_ITEM) {
-				field->type = realloc(field->type,
-						      strlen(field->type) +
-						      strlen(field->name) +
-						      strlen(brackets) + 2);
-				strcat(field->type, " ");
-				strcat(field->type, field->name);
-				free_token(field->name);
-				strcat(field->type, brackets);
-				field->name = token;
-				type = read_token(&token);
-			} else {
-				field->type = realloc(field->type,
-						      strlen(field->type) +
-						      strlen(brackets) + 1);
-				strcat(field->type, brackets);
-			}
-			free(brackets);
-		}
-
-		if (field_is_string(field)) {
-			field->flags |= FIELD_IS_STRING;
-			if (field_is_dynamic(field))
-				field->flags |= FIELD_IS_DYNAMIC;
-		}
-
-		if (test_type_token(type, token,  EVENT_OP, ";"))
-			goto fail;
-		free_token(token);
-
-		if (read_expected(EVENT_ITEM, "offset") < 0)
-			goto fail_expect;
-
-		if (read_expected(EVENT_OP, ":") < 0)
-			goto fail_expect;
-
-		if (read_expect_type(EVENT_ITEM, &token))
-			goto fail;
-		field->offset = strtoul(token, NULL, 0);
-		free_token(token);
-
-		if (read_expected(EVENT_OP, ";") < 0)
-			goto fail_expect;
-
-		if (read_expected(EVENT_ITEM, "size") < 0)
-			goto fail_expect;
-
-		if (read_expected(EVENT_OP, ":") < 0)
-			goto fail_expect;
-
-		if (read_expect_type(EVENT_ITEM, &token))
-			goto fail;
-		field->size = strtoul(token, NULL, 0);
-		free_token(token);
-
-		if (read_expected(EVENT_OP, ";") < 0)
-			goto fail_expect;
-
-		type = read_token(&token);
-		if (type != EVENT_NEWLINE) {
-			/* newer versions of the kernel have a "signed" type */
-			if (test_type_token(type, token, EVENT_ITEM, "signed"))
-				goto fail;
-
-			free_token(token);
-
-			if (read_expected(EVENT_OP, ":") < 0)
-				goto fail_expect;
-
-			if (read_expect_type(EVENT_ITEM, &token))
-				goto fail;
-
-			if (strtoul(token, NULL, 0))
-				field->flags |= FIELD_IS_SIGNED;
-
-			free_token(token);
-			if (read_expected(EVENT_OP, ";") < 0)
-				goto fail_expect;
-
-			if (read_expect_type(EVENT_NEWLINE, &token))
-				goto fail;
-		}
-
-		free_token(token);
-
-		*fields = field;
-		fields = &field->next;
-
-	} while (1);
-
-	return 0;
-
-fail:
-	free_token(token);
-fail_expect:
-	if (field)
-		free(field);
-	return -1;
+	return ret;
 }
 
-static int event_read_format(struct event *event)
+int common_pc(struct scripting_context *context)
 {
-	char *token;
+	static int offset;
+	static int size;
 	int ret;
 
-	if (read_expected_item(EVENT_ITEM, "format") < 0)
-		return -1;
-
-	if (read_expected(EVENT_OP, ":") < 0)
-		return -1;
-
-	if (read_expect_type(EVENT_NEWLINE, &token))
-		goto fail;
-	free_token(token);
-
-	ret = event_read_fields(event, &event->format.common_fields);
+	ret = get_common_field(context, &size, &offset,
+			       "common_preempt_count");
 	if (ret < 0)
-		return ret;
-	event->format.nr_common = ret;
-
-	ret = event_read_fields(event, &event->format.fields);
-	if (ret < 0)
-		return ret;
-	event->format.nr_fields = ret;
-
-	return 0;
-
- fail:
-	free_token(token);
-	return -1;
-}
-
-enum event_type
-process_arg_token(struct event *event, struct print_arg *arg,
-		  char **tok, enum event_type type);
-
-static enum event_type
-process_arg(struct event *event, struct print_arg *arg, char **tok)
-{
-	enum event_type type;
-	char *token;
-
-	type = read_token(&token);
-	*tok = token;
+		return -1;
 
-	return process_arg_token(event, arg, tok, type);
+	return ret;
 }
 
-static enum event_type
-process_cond(struct event *event, struct print_arg *top, char **tok)
+unsigned long long
+raw_field_value(struct event_format *event, const char *name, void *data)
 {
-	struct print_arg *arg, *left, *right;
-	enum event_type type;
-	char *token = NULL;
-
-	arg = malloc_or_die(sizeof(*arg));
-	memset(arg, 0, sizeof(*arg));
-
-	left = malloc_or_die(sizeof(*left));
-
-	right = malloc_or_die(sizeof(*right));
-
-	arg->type = PRINT_OP;
-	arg->op.left = left;
-	arg->op.right = right;
-
-	*tok = NULL;
-	type = process_arg(event, left, &token);
-	if (test_type_token(type, token, EVENT_OP, ":"))
-		goto out_free;
-
-	arg->op.op = token;
-
-	type = process_arg(event, right, &token);
+	struct format_field *field;
+	unsigned long long val;
 
-	top->op.right = arg;
+	field = pevent_find_any_field(event, name);
+	if (!field)
+		return 0ULL;
 
-	*tok = token;
-	return type;
+	pevent_read_number_field(field, data, &val);
 
-out_free:
-	free_token(*tok);
-	free(right);
-	free(left);
-	free_arg(arg);
-	return EVENT_ERROR;
+	return val;
 }
 
-static enum event_type
-process_array(struct event *event, struct print_arg *top, char **tok)
+void *raw_field_ptr(struct event_format *event, const char *name, void *data)
 {
-	struct print_arg *arg;
-	enum event_type type;
-	char *token = NULL;
-
-	arg = malloc_or_die(sizeof(*arg));
-	memset(arg, 0, sizeof(*arg));
-
-	*tok = NULL;
-	type = process_arg(event, arg, &token);
-	if (test_type_token(type, token, EVENT_OP, "]"))
-		goto out_free;
-
-	top->op.right = arg;
-
-	free_token(token);
-	type = read_token_item(&token);
-	*tok = token;
-
-	return type;
+	struct format_field *field;
 
-out_free:
-	free_token(*tok);
-	free_arg(arg);
-	return EVENT_ERROR;
-}
+	field = pevent_find_any_field(event, name);
+	if (!field)
+		return NULL;
 
-static int get_op_prio(char *op)
-{
-	if (!op[1]) {
-		switch (op[0]) {
-		case '*':
-		case '/':
-		case '%':
-			return 6;
-		case '+':
-		case '-':
-			return 7;
-			/* '>>' and '<<' are 8 */
-		case '<':
-		case '>':
-			return 9;
-			/* '==' and '!=' are 10 */
-		case '&':
-			return 11;
-		case '^':
-			return 12;
-		case '|':
-			return 13;
-		case '?':
-			return 16;
-		default:
-			die("unknown op '%c'", op[0]);
-			return -1;
-		}
-	} else {
-		if (strcmp(op, "++") == 0 ||
-		    strcmp(op, "--") == 0) {
-			return 3;
-		} else if (strcmp(op, ">>") == 0 ||
-			   strcmp(op, "<<") == 0) {
-			return 8;
-		} else if (strcmp(op, ">=") == 0 ||
-			   strcmp(op, "<=") == 0) {
-			return 9;
-		} else if (strcmp(op, "==") == 0 ||
-			   strcmp(op, "!=") == 0) {
-			return 10;
-		} else if (strcmp(op, "&&") == 0) {
-			return 14;
-		} else if (strcmp(op, "||") == 0) {
-			return 15;
-		} else {
-			die("unknown op '%s'", op);
-			return -1;
-		}
-	}
-}
+	if (field->flags & FIELD_IS_DYNAMIC) {
+		int offset;
 
-static void set_op_prio(struct print_arg *arg)
-{
+		offset = *(int *)(data + field->offset);
+		offset &= 0xffff;
 
-	/* single ops are the greatest */
-	if (!arg->op.left || arg->op.left->type == PRINT_NULL) {
-		arg->op.prio = 0;
-		return;
+		return data + offset;
 	}
 
-	arg->op.prio = get_op_prio(arg->op.op);
+	return data + field->offset;
 }
 
-static enum event_type
-process_op(struct event *event, struct print_arg *arg, char **tok)
+int trace_parse_common_type(void *data)
 {
-	struct print_arg *left, *right = NULL;
-	enum event_type type;
-	char *token;
-
-	/* the op is passed in via tok */
-	token = *tok;
-
-	if (arg->type == PRINT_OP && !arg->op.left) {
-		/* handle single op */
-		if (token[1]) {
-			die("bad op token %s", token);
-			return EVENT_ERROR;
-		}
-		switch (token[0]) {
-		case '!':
-		case '+':
-		case '-':
-			break;
-		default:
-			die("bad op token %s", token);
-			return EVENT_ERROR;
-		}
-
-		/* make an empty left */
-		left = malloc_or_die(sizeof(*left));
-		left->type = PRINT_NULL;
-		arg->op.left = left;
-
-		right = malloc_or_die(sizeof(*right));
-		arg->op.right = right;
-
-		type = process_arg(event, right, tok);
-
-	} else if (strcmp(token, "?") == 0) {
-
-		left = malloc_or_die(sizeof(*left));
-		/* copy the top arg to the left */
-		*left = *arg;
-
-		arg->type = PRINT_OP;
-		arg->op.op = token;
-		arg->op.left = left;
-		arg->op.prio = 0;
-
-		type = process_cond(event, arg, tok);
-
-	} else if (strcmp(token, ">>") == 0 ||
-		   strcmp(token, "<<") == 0 ||
-		   strcmp(token, "&") == 0 ||
-		   strcmp(token, "|") == 0 ||
-		   strcmp(token, "&&") == 0 ||
-		   strcmp(token, "||") == 0 ||
-		   strcmp(token, "-") == 0 ||
-		   strcmp(token, "+") == 0 ||
-		   strcmp(token, "*") == 0 ||
-		   strcmp(token, "^") == 0 ||
-		   strcmp(token, "/") == 0 ||
-		   strcmp(token, "<") == 0 ||
-		   strcmp(token, ">") == 0 ||
-		   strcmp(token, "==") == 0 ||
-		   strcmp(token, "!=") == 0) {
-
-		left = malloc_or_die(sizeof(*left));
-
-		/* copy the top arg to the left */
-		*left = *arg;
-
-		arg->type = PRINT_OP;
-		arg->op.op = token;
-		arg->op.left = left;
-
-		set_op_prio(arg);
-
-		right = malloc_or_die(sizeof(*right));
-
-		type = read_token_item(&token);
-		*tok = token;
-
-		/* could just be a type pointer */
-		if ((strcmp(arg->op.op, "*") == 0) &&
-		    type == EVENT_DELIM && (strcmp(token, ")") == 0)) {
-			if (left->type != PRINT_ATOM)
-				die("bad pointer type");
-			left->atom.atom = realloc(left->atom.atom,
-					    sizeof(left->atom.atom) + 3);
-			strcat(left->atom.atom, " *");
-			*arg = *left;
-			free(arg);
-
-			return type;
-		}
-
-		type = process_arg_token(event, right, tok, type);
-
-		arg->op.right = right;
-
-	} else if (strcmp(token, "[") == 0) {
-
-		left = malloc_or_die(sizeof(*left));
-		*left = *arg;
-
-		arg->type = PRINT_OP;
-		arg->op.op = token;
-		arg->op.left = left;
-
-		arg->op.prio = 0;
-		type = process_array(event, arg, tok);
-
-	} else {
-		warning("unknown op '%s'", token);
-		event->flags |= EVENT_FL_FAILED;
-		/* the arg is now the left side */
-		return EVENT_NONE;
-	}
-
-	if (type == EVENT_OP) {
-		int prio;
-
-		/* higher prios need to be closer to the root */
-		prio = get_op_prio(*tok);
-
-		if (prio > arg->op.prio)
-			return process_op(event, arg, tok);
+	struct pevent_record record;
 
-		return process_op(event, right, tok);
-	}
-
-	return type;
+	record.data = data;
+	return pevent_data_type(pevent, &record);
 }
 
-static enum event_type
-process_entry(struct event *event __unused, struct print_arg *arg,
-	      char **tok)
+int trace_parse_common_pid(void *data)
 {
-	enum event_type type;
-	char *field;
-	char *token;
-
-	if (read_expected(EVENT_OP, "->") < 0)
-		return EVENT_ERROR;
-
-	if (read_expect_type(EVENT_ITEM, &token) < 0)
-		goto fail;
-	field = token;
-
-	arg->type = PRINT_FIELD;
-	arg->field.name = field;
-
-	if (is_flag_field) {
-		arg->field.field = find_any_field(event, arg->field.name);
-		arg->field.field->flags |= FIELD_IS_FLAG;
-		is_flag_field = 0;
-	} else if (is_symbolic_field) {
-		arg->field.field = find_any_field(event, arg->field.name);
-		arg->field.field->flags |= FIELD_IS_SYMBOLIC;
-		is_symbolic_field = 0;
-	}
-
-	type = read_token(&token);
-	*tok = token;
+	struct pevent_record record;
 
-	return type;
-
-fail:
-	free_token(token);
-	return EVENT_ERROR;
+	record.data = data;
+	return pevent_data_pid(pevent, &record);
 }
 
-static char *arg_eval (struct print_arg *arg);
-
-static long long arg_num_eval(struct print_arg *arg)
+unsigned long long read_size(void *ptr, int size)
 {
-	long long left, right;
-	long long val = 0;
-
-	switch (arg->type) {
-	case PRINT_ATOM:
-		val = strtoll(arg->atom.atom, NULL, 0);
-		break;
-	case PRINT_TYPE:
-		val = arg_num_eval(arg->typecast.item);
-		break;
-	case PRINT_OP:
-		switch (arg->op.op[0]) {
-		case '|':
-			left = arg_num_eval(arg->op.left);
-			right = arg_num_eval(arg->op.right);
-			if (arg->op.op[1])
-				val = left || right;
-			else
-				val = left | right;
-			break;
-		case '&':
-			left = arg_num_eval(arg->op.left);
-			right = arg_num_eval(arg->op.right);
-			if (arg->op.op[1])
-				val = left && right;
-			else
-				val = left & right;
-			break;
-		case '<':
-			left = arg_num_eval(arg->op.left);
-			right = arg_num_eval(arg->op.right);
-			switch (arg->op.op[1]) {
-			case 0:
-				val = left < right;
-				break;
-			case '<':
-				val = left << right;
-				break;
-			case '=':
-				val = left <= right;
-				break;
-			default:
-				die("unknown op '%s'", arg->op.op);
-			}
-			break;
-		case '>':
-			left = arg_num_eval(arg->op.left);
-			right = arg_num_eval(arg->op.right);
-			switch (arg->op.op[1]) {
-			case 0:
-				val = left > right;
-				break;
-			case '>':
-				val = left >> right;
-				break;
-			case '=':
-				val = left >= right;
-				break;
-			default:
-				die("unknown op '%s'", arg->op.op);
-			}
-			break;
-		case '=':
-			left = arg_num_eval(arg->op.left);
-			right = arg_num_eval(arg->op.right);
-
-			if (arg->op.op[1] != '=')
-				die("unknown op '%s'", arg->op.op);
-
-			val = left == right;
-			break;
-		case '!':
-			left = arg_num_eval(arg->op.left);
-			right = arg_num_eval(arg->op.right);
-
-			switch (arg->op.op[1]) {
-			case '=':
-				val = left != right;
-				break;
-			default:
-				die("unknown op '%s'", arg->op.op);
-			}
-			break;
-		case '+':
-			left = arg_num_eval(arg->op.left);
-			right = arg_num_eval(arg->op.right);
-			val = left + right;
-			break;
-		default:
-			die("unknown op '%s'", arg->op.op);
-		}
-		break;
-
-	case PRINT_NULL:
-	case PRINT_FIELD ... PRINT_SYMBOL:
-	case PRINT_STRING:
-	default:
-		die("invalid eval type %d", arg->type);
-
-	}
-	return val;
+	return pevent_read_number(pevent, ptr, size);
 }
 
-static char *arg_eval (struct print_arg *arg)
+struct event_format *trace_find_event(int type)
 {
-	long long val;
-	static char buf[20];
-
-	switch (arg->type) {
-	case PRINT_ATOM:
-		return arg->atom.atom;
-	case PRINT_TYPE:
-		return arg_eval(arg->typecast.item);
-	case PRINT_OP:
-		val = arg_num_eval(arg);
-		sprintf(buf, "%lld", val);
-		return buf;
-
-	case PRINT_NULL:
-	case PRINT_FIELD ... PRINT_SYMBOL:
-	case PRINT_STRING:
-	default:
-		die("invalid eval type %d", arg->type);
-		break;
-	}
-
-	return NULL;
+	return pevent_find_event(pevent, type);
 }
 
-static enum event_type
-process_fields(struct event *event, struct print_flag_sym **list, char **tok)
-{
-	enum event_type type;
-	struct print_arg *arg = NULL;
-	struct print_flag_sym *field;
-	char *token = NULL;
-	char *value;
-
-	do {
-		free_token(token);
-		type = read_token_item(&token);
-		if (test_type_token(type, token, EVENT_OP, "{"))
-			break;
-
-		arg = malloc_or_die(sizeof(*arg));
-
-		free_token(token);
-		type = process_arg(event, arg, &token);
-
-		if (type == EVENT_OP)
-			type = process_op(event, arg, &token);
-
-		if (type == EVENT_ERROR)
-			goto out_free;
-
-		if (test_type_token(type, token, EVENT_DELIM, ","))
-			goto out_free;
-
-		field = malloc_or_die(sizeof(*field));
-		memset(field, 0, sizeof(*field));
-
-		value = arg_eval(arg);
-		field->value = strdup(value);
-
-		free_token(token);
-		type = process_arg(event, arg, &token);
-		if (test_type_token(type, token, EVENT_OP, "}"))
-			goto out_free;
-
-		value = arg_eval(arg);
-		field->str = strdup(value);
-		free_arg(arg);
-		arg = NULL;
-
-		*list = field;
-		list = &field->next;
 
-		free_token(token);
-		type = read_token_item(&token);
-	} while (type == EVENT_DELIM && strcmp(token, ",") == 0);
-
-	*tok = token;
-	return type;
-
-out_free:
-	free_arg(arg);
-	free_token(token);
-
-	return EVENT_ERROR;
-}
-
-static enum event_type
-process_flags(struct event *event, struct print_arg *arg, char **tok)
+void print_trace_event(int cpu, void *data, int size)
 {
-	struct print_arg *field;
-	enum event_type type;
-	char *token;
-
-	memset(arg, 0, sizeof(*arg));
-	arg->type = PRINT_FLAGS;
-
-	if (read_expected_item(EVENT_DELIM, "(") < 0)
-		return EVENT_ERROR;
-
-	field = malloc_or_die(sizeof(*field));
-
-	type = process_arg(event, field, &token);
-	while (type == EVENT_OP)
-		type = process_op(event, field, &token);
-	if (test_type_token(type, token, EVENT_DELIM, ","))
-		goto out_free;
+	struct event_format *event;
+	struct pevent_record record;
+	struct trace_seq s;
+	int type;
 
-	arg->flags.field = field;
+	type = trace_parse_common_type(data);
 
-	type = read_token_item(&token);
-	if (event_item_type(type)) {
-		arg->flags.delim = token;
-		type = read_token_item(&token);
+	event = trace_find_event(type);
+	if (!event) {
+		warning("ug! no event found for type %d", type);
+		return;
 	}
 
-	if (test_type_token(type, token, EVENT_DELIM, ","))
-		goto out_free;
-
-	type = process_fields(event, &arg->flags.flags, &token);
-	if (test_type_token(type, token, EVENT_DELIM, ")"))
-		goto out_free;
+	memset(&record, 0, sizeof(record));
+	record.cpu = cpu;
+	record.size = size;
+	record.data = data;
 
-	free_token(token);
-	type = read_token_item(tok);
-	return type;
-
-out_free:
-	free_token(token);
-	return EVENT_ERROR;
+	trace_seq_init(&s);
+	pevent_print_event(pevent, &s, &record);
+	trace_seq_do_printf(&s);
+	printf("\n");
 }
 
-static enum event_type
-process_symbols(struct event *event, struct print_arg *arg, char **tok)
+void print_event(int cpu, void *data, int size, unsigned long long nsecs,
+		  char *comm)
 {
-	struct print_arg *field;
-	enum event_type type;
-	char *token;
-
-	memset(arg, 0, sizeof(*arg));
-	arg->type = PRINT_SYMBOL;
-
-	if (read_expected_item(EVENT_DELIM, "(") < 0)
-		return EVENT_ERROR;
-
-	field = malloc_or_die(sizeof(*field));
-
-	type = process_arg(event, field, &token);
-	if (test_type_token(type, token, EVENT_DELIM, ","))
-		goto out_free;
+	struct pevent_record record;
+	struct trace_seq s;
+	int pid;
 
-	arg->symbol.field = field;
+	pevent->latency_format = latency_format;
 
-	type = process_fields(event, &arg->symbol.symbols, &token);
-	if (test_type_token(type, token, EVENT_DELIM, ")"))
-		goto out_free;
+	record.ts = nsecs;
+	record.cpu = cpu;
+	record.size = size;
+	record.data = data;
+	pid = pevent_data_pid(pevent, &record);
 
-	free_token(token);
-	type = read_token_item(tok);
-	return type;
+	if (!pevent_pid_is_registered(pevent, pid))
+		pevent_register_comm(pevent, comm, pid);
 
-out_free:
-	free_token(token);
-	return EVENT_ERROR;
+	trace_seq_init(&s);
+	pevent_print_event(pevent, &s, &record);
+	trace_seq_do_printf(&s);
+	printf("\n");
 }
 
-static enum event_type
-process_paren(struct event *event, struct print_arg *arg, char **tok)
+void parse_proc_kallsyms(char *file, unsigned int size __unused)
 {
-	struct print_arg *item_arg;
-	enum event_type type;
-	char *token;
-
-	type = process_arg(event, arg, &token);
-
-	if (type == EVENT_ERROR)
-		return EVENT_ERROR;
-
-	if (type == EVENT_OP)
-		type = process_op(event, arg, &token);
-
-	if (type == EVENT_ERROR)
-		return EVENT_ERROR;
-
-	if (test_type_token(type, token, EVENT_DELIM, ")")) {
-		free_token(token);
-		return EVENT_ERROR;
-	}
-
-	free_token(token);
-	type = read_token_item(&token);
-
-	/*
-	 * If the next token is an item or another open paren, then
-	 * this was a typecast.
-	 */
-	if (event_item_type(type) ||
-	    (type == EVENT_DELIM && strcmp(token, "(") == 0)) {
-
-		/* make this a typecast and contine */
+	unsigned long long addr;
+	char *func;
+	char *line;
+	char *next = NULL;
+	char *addr_str;
+	char *mod;
+	char ch;
 
-		/* prevous must be an atom */
-		if (arg->type != PRINT_ATOM)
-			die("previous needed to be PRINT_ATOM");
+	line = strtok_r(file, "\n", &next);
+	while (line) {
+		mod = NULL;
+		sscanf(line, "%as %c %as\t[%as",
+		       (float *)(void *)&addr_str, /* workaround gcc warning */
+		       &ch, (float *)(void *)&func, (float *)(void *)&mod);
+		addr = strtoull(addr_str, NULL, 16);
+		free(addr_str);
 
-		item_arg = malloc_or_die(sizeof(*item_arg));
+		/* truncate the extra ']' */
+		if (mod)
+			mod[strlen(mod) - 1] = 0;
 
-		arg->type = PRINT_TYPE;
-		arg->typecast.type = arg->atom.atom;
-		arg->typecast.item = item_arg;
-		type = process_arg_token(event, item_arg, &token, type);
+		pevent_register_function(pevent, func, addr, mod);
+		free(func);
+		free(mod);
 
+		line = strtok_r(NULL, "\n", &next);
 	}
-
-	*tok = token;
-	return type;
 }
 
-
-static enum event_type
-process_str(struct event *event __unused, struct print_arg *arg, char **tok)
+void parse_ftrace_printk(char *file, unsigned int size __unused)
 {
-	enum event_type type;
-	char *token;
-
-	if (read_expected(EVENT_DELIM, "(") < 0)
-		return EVENT_ERROR;
-
-	if (read_expect_type(EVENT_ITEM, &token) < 0)
-		goto fail;
-
-	arg->type = PRINT_STRING;
-	arg->string.string = token;
-	arg->string.offset = -1;
-
-	if (read_expected(EVENT_DELIM, ")") < 0)
-		return EVENT_ERROR;
-
-	type = read_token(&token);
-	*tok = token;
-
-	return type;
-fail:
-	free_token(token);
-	return EVENT_ERROR;
-}
+	unsigned long long addr;
+	char *printk;
+	char *line;
+	char *next = NULL;
+	char *addr_str;
+	char *fmt;
 
-enum event_type
-process_arg_token(struct event *event, struct print_arg *arg,
-		  char **tok, enum event_type type)
-{
-	char *token;
-	char *atom;
-
-	token = *tok;
-
-	switch (type) {
-	case EVENT_ITEM:
-		if (strcmp(token, "REC") == 0) {
-			free_token(token);
-			type = process_entry(event, arg, &token);
-		} else if (strcmp(token, "__print_flags") == 0) {
-			free_token(token);
-			is_flag_field = 1;
-			type = process_flags(event, arg, &token);
-		} else if (strcmp(token, "__print_symbolic") == 0) {
-			free_token(token);
-			is_symbolic_field = 1;
-			type = process_symbols(event, arg, &token);
-		} else if (strcmp(token, "__get_str") == 0) {
-			free_token(token);
-			type = process_str(event, arg, &token);
-		} else {
-			atom = token;
-			/* test the next token */
-			type = read_token_item(&token);
-
-			/* atoms can be more than one token long */
-			while (type == EVENT_ITEM) {
-				atom = realloc(atom, strlen(atom) + strlen(token) + 2);
-				strcat(atom, " ");
-				strcat(atom, token);
-				free_token(token);
-				type = read_token_item(&token);
-			}
-
-			/* todo, test for function */
-
-			arg->type = PRINT_ATOM;
-			arg->atom.atom = atom;
-		}
-		break;
-	case EVENT_DQUOTE:
-	case EVENT_SQUOTE:
-		arg->type = PRINT_ATOM;
-		arg->atom.atom = token;
-		type = read_token_item(&token);
-		break;
-	case EVENT_DELIM:
-		if (strcmp(token, "(") == 0) {
-			free_token(token);
-			type = process_paren(event, arg, &token);
+	line = strtok_r(file, "\n", &next);
+	while (line) {
+		addr_str = strtok_r(line, ":", &fmt);
+		if (!addr_str) {
+			warning("printk format with empty entry");
 			break;
 		}
-	case EVENT_OP:
-		/* handle single ops */
-		arg->type = PRINT_OP;
-		arg->op.op = token;
-		arg->op.left = NULL;
-		type = process_op(event, arg, &token);
-
-		break;
-
-	case EVENT_ERROR ... EVENT_NEWLINE:
-	default:
-		die("unexpected type %d", type);
-	}
-	*tok = token;
-
-	return type;
-}
-
-static int event_read_print_args(struct event *event, struct print_arg **list)
-{
-	enum event_type type = EVENT_ERROR;
-	struct print_arg *arg;
-	char *token;
-	int args = 0;
-
-	do {
-		if (type == EVENT_NEWLINE) {
-			free_token(token);
-			type = read_token_item(&token);
-			continue;
-		}
-
-		arg = malloc_or_die(sizeof(*arg));
-		memset(arg, 0, sizeof(*arg));
-
-		type = process_arg(event, arg, &token);
-
-		if (type == EVENT_ERROR) {
-			free_arg(arg);
-			return -1;
-		}
-
-		*list = arg;
-		args++;
-
-		if (type == EVENT_OP) {
-			type = process_op(event, arg, &token);
-			list = &arg->next;
-			continue;
-		}
-
-		if (type == EVENT_DELIM && strcmp(token, ",") == 0) {
-			free_token(token);
-			*list = arg;
-			list = &arg->next;
-			continue;
-		}
-		break;
-	} while (type != EVENT_NONE);
-
-	if (type != EVENT_NONE)
-		free_token(token);
-
-	return args;
-}
-
-static int event_read_print(struct event *event)
-{
-	enum event_type type;
-	char *token;
-	int ret;
-
-	if (read_expected_item(EVENT_ITEM, "print") < 0)
-		return -1;
-
-	if (read_expected(EVENT_ITEM, "fmt") < 0)
-		return -1;
-
-	if (read_expected(EVENT_OP, ":") < 0)
-		return -1;
-
-	if (read_expect_type(EVENT_DQUOTE, &token) < 0)
-		goto fail;
-
- concat:
-	event->print_fmt.format = token;
-	event->print_fmt.args = NULL;
-
-	/* ok to have no arg */
-	type = read_token_item(&token);
-
-	if (type == EVENT_NONE)
-		return 0;
-
-	/* Handle concatination of print lines */
-	if (type == EVENT_DQUOTE) {
-		char *cat;
-
-		cat = malloc_or_die(strlen(event->print_fmt.format) +
-				    strlen(token) + 1);
-		strcpy(cat, event->print_fmt.format);
-		strcat(cat, token);
-		free_token(token);
-		free_token(event->print_fmt.format);
-		event->print_fmt.format = NULL;
-		token = cat;
-		goto concat;
-	}
-
-	if (test_type_token(type, token, EVENT_DELIM, ","))
-		goto fail;
-
-	free_token(token);
-
-	ret = event_read_print_args(event, &event->print_fmt.args);
-	if (ret < 0)
-		return -1;
-
-	return ret;
-
- fail:
-	free_token(token);
-	return -1;
-}
-
-static struct format_field *
-find_common_field(struct event *event, const char *name)
-{
-	struct format_field *format;
-
-	for (format = event->format.common_fields;
-	     format; format = format->next) {
-		if (strcmp(format->name, name) == 0)
-			break;
-	}
-
-	return format;
-}
-
-static struct format_field *
-find_field(struct event *event, const char *name)
-{
-	struct format_field *format;
-
-	for (format = event->format.fields;
-	     format; format = format->next) {
-		if (strcmp(format->name, name) == 0)
-			break;
+		addr = strtoull(addr_str, NULL, 16);
+		/* fmt still has a space, skip it */
+		printk = strdup(fmt+1);
+		line = strtok_r(NULL, "\n", &next);
+		pevent_register_print_string(pevent, printk, addr);
 	}
-
-	return format;
 }
 
-static struct format_field *
-find_any_field(struct event *event, const char *name)
+int parse_ftrace_file(char *buf, unsigned long size)
 {
-	struct format_field *format;
-
-	format = find_common_field(event, name);
-	if (format)
-		return format;
-	return find_field(event, name);
+	return pevent_parse_event(pevent, buf, size, "ftrace");
 }
 
-unsigned long long read_size(void *ptr, int size)
+int parse_event_file(char *buf, unsigned long size, char *sys)
 {
-	switch (size) {
-	case 1:
-		return *(unsigned char *)ptr;
-	case 2:
-		return data2host2(ptr);
-	case 4:
-		return data2host4(ptr);
-	case 8:
-		return data2host8(ptr);
-	default:
-		/* BUG! */
-		return 0;
-	}
+	return pevent_parse_event(pevent, buf, size, sys);
 }
 
-unsigned long long
-raw_field_value(struct event *event, const char *name, void *data)
+struct event_format *trace_find_next_event(struct event_format *event)
 {
-	struct format_field *field;
-
-	field = find_any_field(event, name);
-	if (!field)
-		return 0ULL;
+	static int idx;
 
-	return read_size(data + field->offset, field->size);
-}
-
-void *raw_field_ptr(struct event *event, const char *name, void *data)
-{
-	struct format_field *field;
-
-	field = find_any_field(event, name);
-	if (!field)
+	if (!pevent->events)
 		return NULL;
 
-	if (field->flags & FIELD_IS_DYNAMIC) {
-		int offset;
-
-		offset = *(int *)(data + field->offset);
-		offset &= 0xffff;
-
-		return data + offset;
-	}
-
-	return data + field->offset;
-}
-
-static int get_common_info(const char *type, int *offset, int *size)
-{
-	struct event *event;
-	struct format_field *field;
-
-	/*
-	 * All events should have the same common elements.
-	 * Pick any event to find where the type is;
-	 */
-	if (!event_list)
-		die("no event_list!");
-
-	event = event_list;
-	field = find_common_field(event, type);
-	if (!field)
-		die("field '%s' not found", type);
-
-	*offset = field->offset;
-	*size = field->size;
-
-	return 0;
-}
-
-static int __parse_common(void *data, int *size, int *offset,
-			  const char *name)
-{
-	int ret;
-
-	if (!*size) {
-		ret = get_common_info(name, offset, size);
-		if (ret < 0)
-			return ret;
+	if (!event) {
+		idx = 0;
+		return pevent->events[0];
 	}
-	return read_size(data + *offset, *size);
-}
-
-int trace_parse_common_type(void *data)
-{
-	static int type_offset;
-	static int type_size;
-
-	return __parse_common(data, &type_size, &type_offset,
-			      "common_type");
-}
-
-int trace_parse_common_pid(void *data)
-{
-	static int pid_offset;
-	static int pid_size;
-
-	return __parse_common(data, &pid_size, &pid_offset,
-			      "common_pid");
-}
-
-int parse_common_pc(void *data)
-{
-	static int pc_offset;
-	static int pc_size;
-
-	return __parse_common(data, &pc_size, &pc_offset,
-			      "common_preempt_count");
-}
-
-int parse_common_flags(void *data)
-{
-	static int flags_offset;
-	static int flags_size;
-
-	return __parse_common(data, &flags_size, &flags_offset,
-			      "common_flags");
-}
-
-int parse_common_lock_depth(void *data)
-{
-	static int ld_offset;
-	static int ld_size;
-	int ret;
 
-	ret = __parse_common(data, &ld_size, &ld_offset,
-			     "common_lock_depth");
-	if (ret < 0)
-		return -1;
-
-	return ret;
-}
-
-struct event *trace_find_event(int id)
-{
-	struct event *event;
-
-	for (event = event_list; event; event = event->next) {
-		if (event->id == id)
-			break;
+	if (idx < pevent->nr_events && event == pevent->events[idx]) {
+		idx++;
+		if (idx == pevent->nr_events)
+			return NULL;
+		return pevent->events[idx];
 	}
-	return event;
-}
-
-struct event *trace_find_next_event(struct event *event)
-{
-	if (!event)
-		return event_list;
-
-	return event->next;
-}
-
-static unsigned long long eval_num_arg(void *data, int size,
-				   struct event *event, struct print_arg *arg)
-{
-	unsigned long long val = 0;
-	unsigned long long left, right;
-	struct print_arg *larg;
 
-	switch (arg->type) {
-	case PRINT_NULL:
-		/* ?? */
-		return 0;
-	case PRINT_ATOM:
-		return strtoull(arg->atom.atom, NULL, 0);
-	case PRINT_FIELD:
-		if (!arg->field.field) {
-			arg->field.field = find_any_field(event, arg->field.name);
-			if (!arg->field.field)
-				die("field %s not found", arg->field.name);
-		}
-		/* must be a number */
-		val = read_size(data + arg->field.field->offset,
-				arg->field.field->size);
-		break;
-	case PRINT_FLAGS:
-	case PRINT_SYMBOL:
-		break;
-	case PRINT_TYPE:
-		return eval_num_arg(data, size, event, arg->typecast.item);
-	case PRINT_STRING:
-		return 0;
-		break;
-	case PRINT_OP:
-		if (strcmp(arg->op.op, "[") == 0) {
-			/*
-			 * Arrays are special, since we don't want
-			 * to read the arg as is.
-			 */
-			if (arg->op.left->type != PRINT_FIELD)
-				goto default_op; /* oops, all bets off */
-			larg = arg->op.left;
-			if (!larg->field.field) {
-				larg->field.field =
-					find_any_field(event, larg->field.name);
-				if (!larg->field.field)
-					die("field %s not found", larg->field.name);
-			}
-			right = eval_num_arg(data, size, event, arg->op.right);
-			val = read_size(data + larg->field.field->offset +
-					right * long_size, long_size);
-			break;
-		}
- default_op:
-		left = eval_num_arg(data, size, event, arg->op.left);
-		right = eval_num_arg(data, size, event, arg->op.right);
-		switch (arg->op.op[0]) {
-		case '|':
-			if (arg->op.op[1])
-				val = left || right;
-			else
-				val = left | right;
-			break;
-		case '&':
-			if (arg->op.op[1])
-				val = left && right;
-			else
-				val = left & right;
-			break;
-		case '<':
-			switch (arg->op.op[1]) {
-			case 0:
-				val = left < right;
-				break;
-			case '<':
-				val = left << right;
-				break;
-			case '=':
-				val = left <= right;
-				break;
-			default:
-				die("unknown op '%s'", arg->op.op);
-			}
-			break;
-		case '>':
-			switch (arg->op.op[1]) {
-			case 0:
-				val = left > right;
-				break;
-			case '>':
-				val = left >> right;
-				break;
-			case '=':
-				val = left >= right;
-				break;
-			default:
-				die("unknown op '%s'", arg->op.op);
-			}
-			break;
-		case '=':
-			if (arg->op.op[1] != '=')
-				die("unknown op '%s'", arg->op.op);
-			val = left == right;
-			break;
-		case '-':
-			val = left - right;
-			break;
-		case '+':
-			val = left + right;
-			break;
-		default:
-			die("unknown op '%s'", arg->op.op);
-		}
-		break;
-	default: /* not sure what to do there */
-		return 0;
+	for (idx = 1; idx < pevent->nr_events; idx++) {
+		if (event == pevent->events[idx - 1])
+			return pevent->events[idx];
 	}
-	return val;
+	return NULL;
 }
 
 struct flag {
@@ -2221,933 +357,3 @@ unsigned long long eval_flag(const char *flag)
 
 	return 0;
 }
-
-static void print_str_arg(void *data, int size,
-			  struct event *event, struct print_arg *arg)
-{
-	struct print_flag_sym *flag;
-	unsigned long long val, fval;
-	char *str;
-	int print;
-
-	switch (arg->type) {
-	case PRINT_NULL:
-		/* ?? */
-		return;
-	case PRINT_ATOM:
-		printf("%s", arg->atom.atom);
-		return;
-	case PRINT_FIELD:
-		if (!arg->field.field) {
-			arg->field.field = find_any_field(event, arg->field.name);
-			if (!arg->field.field)
-				die("field %s not found", arg->field.name);
-		}
-		str = malloc_or_die(arg->field.field->size + 1);
-		memcpy(str, data + arg->field.field->offset,
-		       arg->field.field->size);
-		str[arg->field.field->size] = 0;
-		printf("%s", str);
-		free(str);
-		break;
-	case PRINT_FLAGS:
-		val = eval_num_arg(data, size, event, arg->flags.field);
-		print = 0;
-		for (flag = arg->flags.flags; flag; flag = flag->next) {
-			fval = eval_flag(flag->value);
-			if (!val && !fval) {
-				printf("%s", flag->str);
-				break;
-			}
-			if (fval && (val & fval) == fval) {
-				if (print && arg->flags.delim)
-					printf("%s", arg->flags.delim);
-				printf("%s", flag->str);
-				print = 1;
-				val &= ~fval;
-			}
-		}
-		break;
-	case PRINT_SYMBOL:
-		val = eval_num_arg(data, size, event, arg->symbol.field);
-		for (flag = arg->symbol.symbols; flag; flag = flag->next) {
-			fval = eval_flag(flag->value);
-			if (val == fval) {
-				printf("%s", flag->str);
-				break;
-			}
-		}
-		break;
-
-	case PRINT_TYPE:
-		break;
-	case PRINT_STRING: {
-		int str_offset;
-
-		if (arg->string.offset == -1) {
-			struct format_field *f;
-
-			f = find_any_field(event, arg->string.string);
-			arg->string.offset = f->offset;
-		}
-		str_offset = *(int *)(data + arg->string.offset);
-		str_offset &= 0xffff;
-		printf("%s", ((char *)data) + str_offset);
-		break;
-	}
-	case PRINT_OP:
-		/*
-		 * The only op for string should be ? :
-		 */
-		if (arg->op.op[0] != '?')
-			return;
-		val = eval_num_arg(data, size, event, arg->op.left);
-		if (val)
-			print_str_arg(data, size, event, arg->op.right->op.left);
-		else
-			print_str_arg(data, size, event, arg->op.right->op.right);
-		break;
-	default:
-		/* well... */
-		break;
-	}
-}
-
-static struct print_arg *make_bprint_args(char *fmt, void *data, int size, struct event *event)
-{
-	static struct format_field *field, *ip_field;
-	struct print_arg *args, *arg, **next;
-	unsigned long long ip, val;
-	char *ptr;
-	void *bptr;
-
-	if (!field) {
-		field = find_field(event, "buf");
-		if (!field)
-			die("can't find buffer field for binary printk");
-		ip_field = find_field(event, "ip");
-		if (!ip_field)
-			die("can't find ip field for binary printk");
-	}
-
-	ip = read_size(data + ip_field->offset, ip_field->size);
-
-	/*
-	 * The first arg is the IP pointer.
-	 */
-	args = malloc_or_die(sizeof(*args));
-	arg = args;
-	arg->next = NULL;
-	next = &arg->next;
-
-	arg->type = PRINT_ATOM;
-	arg->atom.atom = malloc_or_die(32);
-	sprintf(arg->atom.atom, "%lld", ip);
-
-	/* skip the first "%pf : " */
-	for (ptr = fmt + 6, bptr = data + field->offset;
-	     bptr < data + size && *ptr; ptr++) {
-		int ls = 0;
-
-		if (*ptr == '%') {
- process_again:
-			ptr++;
-			switch (*ptr) {
-			case '%':
-				break;
-			case 'l':
-				ls++;
-				goto process_again;
-			case 'L':
-				ls = 2;
-				goto process_again;
-			case '0' ... '9':
-				goto process_again;
-			case 'p':
-				ls = 1;
-				/* fall through */
-			case 'd':
-			case 'u':
-			case 'x':
-			case 'i':
-				/* the pointers are always 4 bytes aligned */
-				bptr = (void *)(((unsigned long)bptr + 3) &
-						~3);
-				switch (ls) {
-				case 0:
-				case 1:
-					ls = long_size;
-					break;
-				case 2:
-					ls = 8;
-				default:
-					break;
-				}
-				val = read_size(bptr, ls);
-				bptr += ls;
-				arg = malloc_or_die(sizeof(*arg));
-				arg->next = NULL;
-				arg->type = PRINT_ATOM;
-				arg->atom.atom = malloc_or_die(32);
-				sprintf(arg->atom.atom, "%lld", val);
-				*next = arg;
-				next = &arg->next;
-				break;
-			case 's':
-				arg = malloc_or_die(sizeof(*arg));
-				arg->next = NULL;
-				arg->type = PRINT_STRING;
-				arg->string.string = strdup(bptr);
-				bptr += strlen(bptr) + 1;
-				*next = arg;
-				next = &arg->next;
-			default:
-				break;
-			}
-		}
-	}
-
-	return args;
-}
-
-static void free_args(struct print_arg *args)
-{
-	struct print_arg *next;
-
-	while (args) {
-		next = args->next;
-
-		if (args->type == PRINT_ATOM)
-			free(args->atom.atom);
-		else
-			free(args->string.string);
-		free(args);
-		args = next;
-	}
-}
-
-static char *get_bprint_format(void *data, int size __unused, struct event *event)
-{
-	unsigned long long addr;
-	static struct format_field *field;
-	struct printk_map *printk;
-	char *format;
-	char *p;
-
-	if (!field) {
-		field = find_field(event, "fmt");
-		if (!field)
-			die("can't find format field for binary printk");
-		printf("field->offset = %d size=%d\n", field->offset, field->size);
-	}
-
-	addr = read_size(data + field->offset, field->size);
-
-	printk = find_printk(addr);
-	if (!printk) {
-		format = malloc_or_die(45);
-		sprintf(format, "%%pf : (NO FORMAT FOUND at %llx)\n",
-			addr);
-		return format;
-	}
-
-	p = printk->printk;
-	/* Remove any quotes. */
-	if (*p == '"')
-		p++;
-	format = malloc_or_die(strlen(p) + 10);
-	sprintf(format, "%s : %s", "%pf", p);
-	/* remove ending quotes and new line since we will add one too */
-	p = format + strlen(format) - 1;
-	if (*p == '"')
-		*p = 0;
-
-	p -= 2;
-	if (strcmp(p, "\\n") == 0)
-		*p = 0;
-
-	return format;
-}
-
-static void pretty_print(void *data, int size, struct event *event)
-{
-	struct print_fmt *print_fmt = &event->print_fmt;
-	struct print_arg *arg = print_fmt->args;
-	struct print_arg *args = NULL;
-	const char *ptr = print_fmt->format;
-	unsigned long long val;
-	struct func_map *func;
-	const char *saveptr;
-	char *bprint_fmt = NULL;
-	char format[32];
-	int show_func;
-	int len;
-	int ls;
-
-	if (event->flags & EVENT_FL_ISFUNC)
-		ptr = " %pF <-- %pF";
-
-	if (event->flags & EVENT_FL_ISBPRINT) {
-		bprint_fmt = get_bprint_format(data, size, event);
-		args = make_bprint_args(bprint_fmt, data, size, event);
-		arg = args;
-		ptr = bprint_fmt;
-	}
-
-	for (; *ptr; ptr++) {
-		ls = 0;
-		if (*ptr == '\\') {
-			ptr++;
-			switch (*ptr) {
-			case 'n':
-				printf("\n");
-				break;
-			case 't':
-				printf("\t");
-				break;
-			case 'r':
-				printf("\r");
-				break;
-			case '\\':
-				printf("\\");
-				break;
-			default:
-				printf("%c", *ptr);
-				break;
-			}
-
-		} else if (*ptr == '%') {
-			saveptr = ptr;
-			show_func = 0;
- cont_process:
-			ptr++;
-			switch (*ptr) {
-			case '%':
-				printf("%%");
-				break;
-			case 'l':
-				ls++;
-				goto cont_process;
-			case 'L':
-				ls = 2;
-				goto cont_process;
-			case 'z':
-			case 'Z':
-			case '0' ... '9':
-				goto cont_process;
-			case 'p':
-				if (long_size == 4)
-					ls = 1;
-				else
-					ls = 2;
-
-				if (*(ptr+1) == 'F' ||
-				    *(ptr+1) == 'f') {
-					ptr++;
-					show_func = *ptr;
-				}
-
-				/* fall through */
-			case 'd':
-			case 'i':
-			case 'x':
-			case 'X':
-			case 'u':
-				if (!arg)
-					die("no argument match");
-
-				len = ((unsigned long)ptr + 1) -
-					(unsigned long)saveptr;
-
-				/* should never happen */
-				if (len > 32)
-					die("bad format!");
-
-				memcpy(format, saveptr, len);
-				format[len] = 0;
-
-				val = eval_num_arg(data, size, event, arg);
-				arg = arg->next;
-
-				if (show_func) {
-					func = find_func(val);
-					if (func) {
-						printf("%s", func->func);
-						if (show_func == 'F')
-							printf("+0x%llx",
-							       val - func->addr);
-						break;
-					}
-				}
-				switch (ls) {
-				case 0:
-					printf(format, (int)val);
-					break;
-				case 1:
-					printf(format, (long)val);
-					break;
-				case 2:
-					printf(format, (long long)val);
-					break;
-				default:
-					die("bad count (%d)", ls);
-				}
-				break;
-			case 's':
-				if (!arg)
-					die("no matching argument");
-
-				print_str_arg(data, size, event, arg);
-				arg = arg->next;
-				break;
-			default:
-				printf(">%c<", *ptr);
-
-			}
-		} else
-			printf("%c", *ptr);
-	}
-
-	if (args) {
-		free_args(args);
-		free(bprint_fmt);
-	}
-}
-
-static inline int log10_cpu(int nb)
-{
-	if (nb / 100)
-		return 3;
-	if (nb / 10)
-		return 2;
-	return 1;
-}
-
-static void print_lat_fmt(void *data, int size __unused)
-{
-	unsigned int lat_flags;
-	unsigned int pc;
-	int lock_depth;
-	int hardirq;
-	int softirq;
-
-	lat_flags = parse_common_flags(data);
-	pc = parse_common_pc(data);
-	lock_depth = parse_common_lock_depth(data);
-
-	hardirq = lat_flags & TRACE_FLAG_HARDIRQ;
-	softirq = lat_flags & TRACE_FLAG_SOFTIRQ;
-
-	printf("%c%c%c",
-	       (lat_flags & TRACE_FLAG_IRQS_OFF) ? 'd' :
-	       (lat_flags & TRACE_FLAG_IRQS_NOSUPPORT) ?
-	       'X' : '.',
-	       (lat_flags & TRACE_FLAG_NEED_RESCHED) ?
-	       'N' : '.',
-	       (hardirq && softirq) ? 'H' :
-	       hardirq ? 'h' : softirq ? 's' : '.');
-
-	if (pc)
-		printf("%x", pc);
-	else
-		printf(".");
-
-	if (lock_depth < 0)
-		printf(". ");
-	else
-		printf("%d ", lock_depth);
-}
-
-#define TRACE_GRAPH_INDENT	2
-
-static struct record *
-get_return_for_leaf(int cpu, int cur_pid, unsigned long long cur_func,
-		    struct record *next)
-{
-	struct format_field *field;
-	struct event *event;
-	unsigned long val;
-	int type;
-	int pid;
-
-	type = trace_parse_common_type(next->data);
-	event = trace_find_event(type);
-	if (!event)
-		return NULL;
-
-	if (!(event->flags & EVENT_FL_ISFUNCRET))
-		return NULL;
-
-	pid = trace_parse_common_pid(next->data);
-	field = find_field(event, "func");
-	if (!field)
-		die("function return does not have field func");
-
-	val = read_size(next->data + field->offset, field->size);
-
-	if (cur_pid != pid || cur_func != val)
-		return NULL;
-
-	/* this is a leaf, now advance the iterator */
-	return trace_read_data(cpu);
-}
-
-/* Signal a overhead of time execution to the output */
-static void print_graph_overhead(unsigned long long duration)
-{
-	/* Non nested entry or return */
-	if (duration == ~0ULL)
-		return (void)printf("  ");
-
-	/* Duration exceeded 100 msecs */
-	if (duration > 100000ULL)
-		return (void)printf("! ");
-
-	/* Duration exceeded 10 msecs */
-	if (duration > 10000ULL)
-		return (void)printf("+ ");
-
-	printf("  ");
-}
-
-static void print_graph_duration(unsigned long long duration)
-{
-	unsigned long usecs = duration / 1000;
-	unsigned long nsecs_rem = duration % 1000;
-	/* log10(ULONG_MAX) + '\0' */
-	char msecs_str[21];
-	char nsecs_str[5];
-	int len;
-	int i;
-
-	sprintf(msecs_str, "%lu", usecs);
-
-	/* Print msecs */
-	len = printf("%lu", usecs);
-
-	/* Print nsecs (we don't want to exceed 7 numbers) */
-	if (len < 7) {
-		snprintf(nsecs_str, 8 - len, "%03lu", nsecs_rem);
-		len += printf(".%s", nsecs_str);
-	}
-
-	printf(" us ");
-
-	/* Print remaining spaces to fit the row's width */
-	for (i = len; i < 7; i++)
-		printf(" ");
-
-	printf("|  ");
-}
-
-static void
-print_graph_entry_leaf(struct event *event, void *data, struct record *ret_rec)
-{
-	unsigned long long rettime, calltime;
-	unsigned long long duration, depth;
-	unsigned long long val;
-	struct format_field *field;
-	struct func_map *func;
-	struct event *ret_event;
-	int type;
-	int i;
-
-	type = trace_parse_common_type(ret_rec->data);
-	ret_event = trace_find_event(type);
-
-	field = find_field(ret_event, "rettime");
-	if (!field)
-		die("can't find rettime in return graph");
-	rettime = read_size(ret_rec->data + field->offset, field->size);
-
-	field = find_field(ret_event, "calltime");
-	if (!field)
-		die("can't find rettime in return graph");
-	calltime = read_size(ret_rec->data + field->offset, field->size);
-
-	duration = rettime - calltime;
-
-	/* Overhead */
-	print_graph_overhead(duration);
-
-	/* Duration */
-	print_graph_duration(duration);
-
-	field = find_field(event, "depth");
-	if (!field)
-		die("can't find depth in entry graph");
-	depth = read_size(data + field->offset, field->size);
-
-	/* Function */
-	for (i = 0; i < (int)(depth * TRACE_GRAPH_INDENT); i++)
-		printf(" ");
-
-	field = find_field(event, "func");
-	if (!field)
-		die("can't find func in entry graph");
-	val = read_size(data + field->offset, field->size);
-	func = find_func(val);
-
-	if (func)
-		printf("%s();", func->func);
-	else
-		printf("%llx();", val);
-}
-
-static void print_graph_nested(struct event *event, void *data)
-{
-	struct format_field *field;
-	unsigned long long depth;
-	unsigned long long val;
-	struct func_map *func;
-	int i;
-
-	/* No overhead */
-	print_graph_overhead(-1);
-
-	/* No time */
-	printf("           |  ");
-
-	field = find_field(event, "depth");
-	if (!field)
-		die("can't find depth in entry graph");
-	depth = read_size(data + field->offset, field->size);
-
-	/* Function */
-	for (i = 0; i < (int)(depth * TRACE_GRAPH_INDENT); i++)
-		printf(" ");
-
-	field = find_field(event, "func");
-	if (!field)
-		die("can't find func in entry graph");
-	val = read_size(data + field->offset, field->size);
-	func = find_func(val);
-
-	if (func)
-		printf("%s() {", func->func);
-	else
-		printf("%llx() {", val);
-}
-
-static void
-pretty_print_func_ent(void *data, int size, struct event *event,
-		      int cpu, int pid)
-{
-	struct format_field *field;
-	struct record *rec;
-	void *copy_data;
-	unsigned long val;
-
-	if (latency_format) {
-		print_lat_fmt(data, size);
-		printf(" | ");
-	}
-
-	field = find_field(event, "func");
-	if (!field)
-		die("function entry does not have func field");
-
-	val = read_size(data + field->offset, field->size);
-
-	/*
-	 * peek_data may unmap the data pointer. Copy it first.
-	 */
-	copy_data = malloc_or_die(size);
-	memcpy(copy_data, data, size);
-	data = copy_data;
-
-	rec = trace_peek_data(cpu);
-	if (rec) {
-		rec = get_return_for_leaf(cpu, pid, val, rec);
-		if (rec) {
-			print_graph_entry_leaf(event, data, rec);
-			goto out_free;
-		}
-	}
-	print_graph_nested(event, data);
-out_free:
-	free(data);
-}
-
-static void
-pretty_print_func_ret(void *data, int size __unused, struct event *event)
-{
-	unsigned long long rettime, calltime;
-	unsigned long long duration, depth;
-	struct format_field *field;
-	int i;
-
-	if (latency_format) {
-		print_lat_fmt(data, size);
-		printf(" | ");
-	}
-
-	field = find_field(event, "rettime");
-	if (!field)
-		die("can't find rettime in return graph");
-	rettime = read_size(data + field->offset, field->size);
-
-	field = find_field(event, "calltime");
-	if (!field)
-		die("can't find calltime in return graph");
-	calltime = read_size(data + field->offset, field->size);
-
-	duration = rettime - calltime;
-
-	/* Overhead */
-	print_graph_overhead(duration);
-
-	/* Duration */
-	print_graph_duration(duration);
-
-	field = find_field(event, "depth");
-	if (!field)
-		die("can't find depth in entry graph");
-	depth = read_size(data + field->offset, field->size);
-
-	/* Function */
-	for (i = 0; i < (int)(depth * TRACE_GRAPH_INDENT); i++)
-		printf(" ");
-
-	printf("}");
-}
-
-static void
-pretty_print_func_graph(void *data, int size, struct event *event,
-			int cpu, int pid)
-{
-	if (event->flags & EVENT_FL_ISFUNCENT)
-		pretty_print_func_ent(data, size, event, cpu, pid);
-	else if (event->flags & EVENT_FL_ISFUNCRET)
-		pretty_print_func_ret(data, size, event);
-	printf("\n");
-}
-
-void print_trace_event(int cpu, void *data, int size)
-{
-	struct event *event;
-	int type;
-	int pid;
-
-	type = trace_parse_common_type(data);
-
-	event = trace_find_event(type);
-	if (!event) {
-		warning("ug! no event found for type %d", type);
-		return;
-	}
-
-	pid = trace_parse_common_pid(data);
-
-	if (event->flags & (EVENT_FL_ISFUNCENT | EVENT_FL_ISFUNCRET))
-		return pretty_print_func_graph(data, size, event, cpu, pid);
-
-	if (latency_format)
-		print_lat_fmt(data, size);
-
-	if (event->flags & EVENT_FL_FAILED) {
-		printf("EVENT '%s' FAILED TO PARSE\n",
-		       event->name);
-		return;
-	}
-
-	pretty_print(data, size, event);
-}
-
-static void print_fields(struct print_flag_sym *field)
-{
-	printf("{ %s, %s }", field->value, field->str);
-	if (field->next) {
-		printf(", ");
-		print_fields(field->next);
-	}
-}
-
-static void print_args(struct print_arg *args)
-{
-	int print_paren = 1;
-
-	switch (args->type) {
-	case PRINT_NULL:
-		printf("null");
-		break;
-	case PRINT_ATOM:
-		printf("%s", args->atom.atom);
-		break;
-	case PRINT_FIELD:
-		printf("REC->%s", args->field.name);
-		break;
-	case PRINT_FLAGS:
-		printf("__print_flags(");
-		print_args(args->flags.field);
-		printf(", %s, ", args->flags.delim);
-		print_fields(args->flags.flags);
-		printf(")");
-		break;
-	case PRINT_SYMBOL:
-		printf("__print_symbolic(");
-		print_args(args->symbol.field);
-		printf(", ");
-		print_fields(args->symbol.symbols);
-		printf(")");
-		break;
-	case PRINT_STRING:
-		printf("__get_str(%s)", args->string.string);
-		break;
-	case PRINT_TYPE:
-		printf("(%s)", args->typecast.type);
-		print_args(args->typecast.item);
-		break;
-	case PRINT_OP:
-		if (strcmp(args->op.op, ":") == 0)
-			print_paren = 0;
-		if (print_paren)
-			printf("(");
-		print_args(args->op.left);
-		printf(" %s ", args->op.op);
-		print_args(args->op.right);
-		if (print_paren)
-			printf(")");
-		break;
-	default:
-		/* we should warn... */
-		return;
-	}
-	if (args->next) {
-		printf("\n");
-		print_args(args->next);
-	}
-}
-
-int parse_ftrace_file(char *buf, unsigned long size)
-{
-	struct format_field *field;
-	struct print_arg *arg, **list;
-	struct event *event;
-	int ret;
-
-	init_input_buf(buf, size);
-
-	event = alloc_event();
-	if (!event)
-		return -ENOMEM;
-
-	event->flags |= EVENT_FL_ISFTRACE;
-
-	event->name = event_read_name();
-	if (!event->name)
-		die("failed to read ftrace event name");
-
-	if (strcmp(event->name, "function") == 0)
-		event->flags |= EVENT_FL_ISFUNC;
-
-	else if (strcmp(event->name, "funcgraph_entry") == 0)
-		event->flags |= EVENT_FL_ISFUNCENT;
-
-	else if (strcmp(event->name, "funcgraph_exit") == 0)
-		event->flags |= EVENT_FL_ISFUNCRET;
-
-	else if (strcmp(event->name, "bprint") == 0)
-		event->flags |= EVENT_FL_ISBPRINT;
-
-	event->id = event_read_id();
-	if (event->id < 0)
-		die("failed to read ftrace event id");
-
-	add_event(event);
-
-	ret = event_read_format(event);
-	if (ret < 0)
-		die("failed to read ftrace event format");
-
-	ret = event_read_print(event);
-	if (ret < 0)
-		die("failed to read ftrace event print fmt");
-
-	/* New ftrace handles args */
-	if (ret > 0)
-		return 0;
-	/*
-	 * The arguments for ftrace files are parsed by the fields.
-	 * Set up the fields as their arguments.
-	 */
-	list = &event->print_fmt.args;
-	for (field = event->format.fields; field; field = field->next) {
-		arg = malloc_or_die(sizeof(*arg));
-		memset(arg, 0, sizeof(*arg));
-		*list = arg;
-		list = &arg->next;
-		arg->type = PRINT_FIELD;
-		arg->field.name = field->name;
-		arg->field.field = field;
-	}
-	return 0;
-}
-
-int parse_event_file(char *buf, unsigned long size, char *sys)
-{
-	struct event *event;
-	int ret;
-
-	init_input_buf(buf, size);
-
-	event = alloc_event();
-	if (!event)
-		return -ENOMEM;
-
-	event->name = event_read_name();
-	if (!event->name)
-		die("failed to read event name");
-
-	event->id = event_read_id();
-	if (event->id < 0)
-		die("failed to read event id");
-
-	ret = event_read_format(event);
-	if (ret < 0) {
-		warning("failed to read event format for %s", event->name);
-		goto event_failed;
-	}
-
-	ret = event_read_print(event);
-	if (ret < 0) {
-		warning("failed to read event print fmt for %s", event->name);
-		goto event_failed;
-	}
-
-	event->system = strdup(sys);
-
-#define PRINT_ARGS 0
-	if (PRINT_ARGS && event->print_fmt.args)
-		print_args(event->print_fmt.args);
-
-	add_event(event);
-	return 0;
-
- event_failed:
-	event->flags |= EVENT_FL_FAILED;
-	/* still add it even if it failed */
-	add_event(event);
-	return -1;
-}
-
-void parse_set_info(int nr_cpus, int long_sz)
-{
-	cpus = nr_cpus;
-	long_size = long_sz;
-}
-
-int common_pc(struct scripting_context *context)
-{
-	return parse_common_pc(context->event_data);
-}
-
-int common_flags(struct scripting_context *context)
-{
-	return parse_common_flags(context->event_data);
-}
-
-int common_lock_depth(struct scripting_context *context)
-{
-	return parse_common_lock_depth(context->event_data);
-}
diff --git a/tools/perf/util/trace-event-read.c b/tools/perf/util/trace-event-read.c
index b9592e0de8d7..f097e0dd6c5c 100644
--- a/tools/perf/util/trace-event-read.c
+++ b/tools/perf/util/trace-event-read.c
@@ -52,6 +52,16 @@ static unsigned long	page_size;
 static ssize_t calc_data_size;
 static bool repipe;
 
+static void *malloc_or_die(int size)
+{
+	void *ret;
+
+	ret = malloc(size);
+	if (!ret)
+		die("malloc");
+	return ret;
+}
+
 static int do_read(int fd, void *buf, int size)
 {
 	int rsize = size;
@@ -109,7 +119,7 @@ static unsigned int read4(void)
 	unsigned int data;
 
 	read_or_die(&data, 4);
-	return __data2host4(data);
+	return __data2host4(perf_pevent, data);
 }
 
 static unsigned long long read8(void)
@@ -117,7 +127,7 @@ static unsigned long long read8(void)
 	unsigned long long data;
 
 	read_or_die(&data, 8);
-	return __data2host8(data);
+	return __data2host8(perf_pevent, data);
 }
 
 static char *read_string(void)
@@ -282,7 +292,7 @@ struct cpu_data {
 	unsigned long long	offset;
 	unsigned long long	size;
 	unsigned long long	timestamp;
-	struct record		*next;
+	struct pevent_record	*next;
 	char			*page;
 	int			cpu;
 	int			index;
@@ -367,9 +377,9 @@ static int calc_index(void *ptr, int cpu)
 	return (unsigned long)ptr - (unsigned long)cpu_data[cpu].page;
 }
 
-struct record *trace_peek_data(int cpu)
+struct pevent_record *trace_peek_data(int cpu)
 {
-	struct record *data;
+	struct pevent_record *data;
 	void *page = cpu_data[cpu].page;
 	int idx = cpu_data[cpu].index;
 	void *ptr = page + idx;
@@ -389,15 +399,15 @@ struct record *trace_peek_data(int cpu)
 		/* FIXME: handle header page */
 		if (header_page_ts_size != 8)
 			die("expected a long long type for timestamp");
-		cpu_data[cpu].timestamp = data2host8(ptr);
+		cpu_data[cpu].timestamp = data2host8(perf_pevent, ptr);
 		ptr += 8;
 		switch (header_page_size_size) {
 		case 4:
-			cpu_data[cpu].page_size = data2host4(ptr);
+			cpu_data[cpu].page_size = data2host4(perf_pevent, ptr);
 			ptr += 4;
 			break;
 		case 8:
-			cpu_data[cpu].page_size = data2host8(ptr);
+			cpu_data[cpu].page_size = data2host8(perf_pevent, ptr);
 			ptr += 8;
 			break;
 		default:
@@ -414,7 +424,7 @@ read_again:
 		return trace_peek_data(cpu);
 	}
 
-	type_len_ts = data2host4(ptr);
+	type_len_ts = data2host4(perf_pevent, ptr);
 	ptr += 4;
 
 	type_len = type_len4host(type_len_ts);
@@ -424,14 +434,14 @@ read_again:
 	case RINGBUF_TYPE_PADDING:
 		if (!delta)
 			die("error, hit unexpected end of page");
-		length = data2host4(ptr);
+		length = data2host4(perf_pevent, ptr);
 		ptr += 4;
 		length *= 4;
 		ptr += length;
 		goto read_again;
 
 	case RINGBUF_TYPE_TIME_EXTEND:
-		extend = data2host4(ptr);
+		extend = data2host4(perf_pevent, ptr);
 		ptr += 4;
 		extend <<= TS_SHIFT;
 		extend += delta;
@@ -442,7 +452,7 @@ read_again:
 		ptr += 12;
 		break;
 	case 0:
-		length = data2host4(ptr);
+		length = data2host4(perf_pevent, ptr);
 		ptr += 4;
 		die("here! length=%d", length);
 		break;
@@ -467,9 +477,9 @@ read_again:
 	return data;
 }
 
-struct record *trace_read_data(int cpu)
+struct pevent_record *trace_read_data(int cpu)
 {
-	struct record *data;
+	struct pevent_record *data;
 
 	data = trace_peek_data(cpu);
 	cpu_data[cpu].next = NULL;
@@ -509,6 +519,8 @@ ssize_t trace_report(int fd, bool __repipe)
 	file_bigendian = buf[0];
 	host_bigendian = bigendian();
 
+	read_trace_init(file_bigendian, host_bigendian);
+
 	read_or_die(buf, 1);
 	long_size = buf[0];
 
@@ -526,11 +538,11 @@ ssize_t trace_report(int fd, bool __repipe)
 	repipe = false;
 
 	if (show_funcs) {
-		print_funcs();
+		pevent_print_funcs(perf_pevent);
 		return size;
 	}
 	if (show_printk) {
-		print_printk();
+		pevent_print_printk(perf_pevent);
 		return size;
 	}
 
diff --git a/tools/perf/util/trace-event.h b/tools/perf/util/trace-event.h
index 58ae14c5baac..639852ac1117 100644
--- a/tools/perf/util/trace-event.h
+++ b/tools/perf/util/trace-event.h
@@ -1,20 +1,21 @@
-#ifndef __PERF_TRACE_EVENTS_H
-#define __PERF_TRACE_EVENTS_H
+#ifndef _PERF_UTIL_TRACE_EVENT_H
+#define _PERF_UTIL_TRACE_EVENT_H
 
-#include <stdbool.h>
 #include "parse-events.h"
+#include "event-parse.h"
+#include "session.h"
 
 struct machine;
 struct perf_sample;
 union perf_event;
 struct thread;
 
-#define __unused __attribute__((unused))
-
+extern int header_page_size_size;
+extern int header_page_ts_size;
+extern int header_page_data_offset;
 
-#ifndef PAGE_MASK
-#define PAGE_MASK (page_size - 1)
-#endif
+extern bool latency_format;
+extern struct pevent *perf_pevent;
 
 enum {
 	RINGBUF_TYPE_PADDING		= 29,
@@ -26,246 +27,37 @@ enum {
 #define TS_SHIFT		27
 #endif
 
-#define NSECS_PER_SEC		1000000000ULL
-#define NSECS_PER_USEC		1000ULL
-
-enum format_flags {
-	FIELD_IS_ARRAY		= 1,
-	FIELD_IS_POINTER	= 2,
-	FIELD_IS_SIGNED		= 4,
-	FIELD_IS_STRING		= 8,
-	FIELD_IS_DYNAMIC	= 16,
-	FIELD_IS_FLAG		= 32,
-	FIELD_IS_SYMBOLIC	= 64,
-};
-
-struct format_field {
-	struct format_field	*next;
-	char			*type;
-	char			*name;
-	int			offset;
-	int			size;
-	unsigned long		flags;
-};
-
-struct format {
-	int			nr_common;
-	int			nr_fields;
-	struct format_field	*common_fields;
-	struct format_field	*fields;
-};
-
-struct print_arg_atom {
-	char			*atom;
-};
-
-struct print_arg_string {
-	char			*string;
-	int			offset;
-};
-
-struct print_arg_field {
-	char			*name;
-	struct format_field	*field;
-};
-
-struct print_flag_sym {
-	struct print_flag_sym	*next;
-	char			*value;
-	char			*str;
-};
-
-struct print_arg_typecast {
-	char 			*type;
-	struct print_arg	*item;
-};
-
-struct print_arg_flags {
-	struct print_arg	*field;
-	char			*delim;
-	struct print_flag_sym	*flags;
-};
-
-struct print_arg_symbol {
-	struct print_arg	*field;
-	struct print_flag_sym	*symbols;
-};
-
-struct print_arg;
-
-struct print_arg_op {
-	char			*op;
-	int			prio;
-	struct print_arg	*left;
-	struct print_arg	*right;
-};
-
-struct print_arg_func {
-	char			*name;
-	struct print_arg	*args;
-};
-
-enum print_arg_type {
-	PRINT_NULL,
-	PRINT_ATOM,
-	PRINT_FIELD,
-	PRINT_FLAGS,
-	PRINT_SYMBOL,
-	PRINT_TYPE,
-	PRINT_STRING,
-	PRINT_OP,
-};
-
-struct print_arg {
-	struct print_arg		*next;
-	enum print_arg_type		type;
-	union {
-		struct print_arg_atom		atom;
-		struct print_arg_field		field;
-		struct print_arg_typecast	typecast;
-		struct print_arg_flags		flags;
-		struct print_arg_symbol		symbol;
-		struct print_arg_func		func;
-		struct print_arg_string		string;
-		struct print_arg_op		op;
-	};
-};
-
-struct print_fmt {
-	char			*format;
-	struct print_arg	*args;
-};
-
-struct event {
-	struct event		*next;
-	char			*name;
-	int			id;
-	int			flags;
-	struct format		format;
-	struct print_fmt	print_fmt;
-	char			*system;
-};
-
-enum {
-	EVENT_FL_ISFTRACE	= 0x01,
-	EVENT_FL_ISPRINT	= 0x02,
-	EVENT_FL_ISBPRINT	= 0x04,
-	EVENT_FL_ISFUNC		= 0x08,
-	EVENT_FL_ISFUNCENT	= 0x10,
-	EVENT_FL_ISFUNCRET	= 0x20,
-
-	EVENT_FL_FAILED		= 0x80000000
-};
-
-struct record {
-	unsigned long long ts;
-	int size;
-	void *data;
-};
-
-struct record *trace_peek_data(int cpu);
-struct record *trace_read_data(int cpu);
-
-void parse_set_info(int nr_cpus, int long_sz);
-
-ssize_t trace_report(int fd, bool repipe);
-
-void *malloc_or_die(unsigned int size);
+int bigendian(void);
 
-void parse_cmdlines(char *file, int size);
-void parse_proc_kallsyms(char *file, unsigned int size);
-void parse_ftrace_printk(char *file, unsigned int size);
+int read_trace_init(int file_bigendian, int host_bigendian);
+void print_trace_event(int cpu, void *data, int size);
 
-void print_funcs(void);
-void print_printk(void);
+void print_event(int cpu, void *data, int size, unsigned long long nsecs,
+		  char *comm);
 
 int parse_ftrace_file(char *buf, unsigned long size);
 int parse_event_file(char *buf, unsigned long size, char *sys);
-void print_trace_event(int cpu, void *data, int size);
-
-extern int file_bigendian;
-extern int host_bigendian;
-
-int bigendian(void);
-
-static inline unsigned short __data2host2(unsigned short data)
-{
-	unsigned short swap;
-
-	if (host_bigendian == file_bigendian)
-		return data;
 
-	swap = ((data & 0xffULL) << 8) |
-		((data & (0xffULL << 8)) >> 8);
+struct pevent_record *trace_peek_data(int cpu);
+struct event_format *trace_find_event(int type);
 
-	return swap;
-}
-
-static inline unsigned int __data2host4(unsigned int data)
-{
-	unsigned int swap;
-
-	if (host_bigendian == file_bigendian)
-		return data;
-
-	swap = ((data & 0xffULL) << 24) |
-		((data & (0xffULL << 8)) << 8) |
-		((data & (0xffULL << 16)) >> 8) |
-		((data & (0xffULL << 24)) >> 24);
-
-	return swap;
-}
-
-static inline unsigned long long __data2host8(unsigned long long data)
-{
-	unsigned long long swap;
-
-	if (host_bigendian == file_bigendian)
-		return data;
-
-	swap = ((data & 0xffULL) << 56) |
-		((data & (0xffULL << 8)) << 40) |
-		((data & (0xffULL << 16)) << 24) |
-		((data & (0xffULL << 24)) << 8) |
-		((data & (0xffULL << 32)) >> 8) |
-		((data & (0xffULL << 40)) >> 24) |
-		((data & (0xffULL << 48)) >> 40) |
-		((data & (0xffULL << 56)) >> 56);
-
-	return swap;
-}
+unsigned long long
+raw_field_value(struct event_format *event, const char *name, void *data);
+void *raw_field_ptr(struct event_format *event, const char *name, void *data);
 
-#define data2host2(ptr)		__data2host2(*(unsigned short *)ptr)
-#define data2host4(ptr)		__data2host4(*(unsigned int *)ptr)
-#define data2host8(ptr)		({				\
-	unsigned long long __val;				\
-								\
-	memcpy(&__val, (ptr), sizeof(unsigned long long));	\
-	__data2host8(__val);					\
-})
+void parse_proc_kallsyms(char *file, unsigned int size __unused);
+void parse_ftrace_printk(char *file, unsigned int size __unused);
 
-extern int header_page_ts_offset;
-extern int header_page_ts_size;
-extern int header_page_size_offset;
-extern int header_page_size_size;
-extern int header_page_data_offset;
-extern int header_page_data_size;
-
-extern bool latency_format;
+ssize_t trace_report(int fd, bool repipe);
 
 int trace_parse_common_type(void *data);
 int trace_parse_common_pid(void *data);
-int parse_common_pc(void *data);
-int parse_common_flags(void *data);
-int parse_common_lock_depth(void *data);
-struct event *trace_find_event(int id);
-struct event *trace_find_next_event(struct event *event);
+
+struct event_format *trace_find_next_event(struct event_format *event);
 unsigned long long read_size(void *ptr, int size);
-unsigned long long
-raw_field_value(struct event *event, const char *name, void *data);
-void *raw_field_ptr(struct event *event, const char *name, void *data);
 unsigned long long eval_flag(const char *flag);
 
+struct pevent_record *trace_read_data(int cpu);
 int read_tracing_data(int fd, struct list_head *pattrs);
 
 struct tracing_data {
@@ -280,15 +72,6 @@ struct tracing_data *tracing_data_get(struct list_head *pattrs,
 void tracing_data_put(struct tracing_data *tdata);
 
 
-/* taken from kernel/trace/trace.h */
-enum trace_flag_type {
-	TRACE_FLAG_IRQS_OFF		= 0x01,
-	TRACE_FLAG_IRQS_NOSUPPORT	= 0x02,
-	TRACE_FLAG_NEED_RESCHED		= 0x04,
-	TRACE_FLAG_HARDIRQ		= 0x08,
-	TRACE_FLAG_SOFTIRQ		= 0x10,
-};
-
 struct scripting_ops {
 	const char *name;
 	int (*start_script) (const char *script, int argc, const char **argv);
@@ -314,4 +97,4 @@ int common_pc(struct scripting_context *context);
 int common_flags(struct scripting_context *context);
 int common_lock_depth(struct scripting_context *context);
 
-#endif /* __PERF_TRACE_EVENTS_H */
+#endif /* _PERF_UTIL_TRACE_EVENT_H */