[PATCH 19/47] libtraceevent, perf tools: Changes in tep_print_event_* APIs

[PATCH 19/47] libtraceevent, perf tools: Changes in tep_print_event_* APIs

[Arnaldo Carvalho de Melo]

From: Tzvetomir Stoyanov <tstoyanov@vmware.com>

Libtraceevent APIs for printing various trace events information are
complicated, there are complex extra parameters. To control the way
event information is printed, the user should call a set of functions in
a specific sequence.

These APIs are reimplemented to provide a more simple interface for
printing event information.

Removed APIs:

 	tep_print_event_task()
	tep_print_event_time()
	tep_print_event_data()
	tep_event_info()
	tep_is_latency_format()
	tep_set_latency_format()
	tep_data_latency_format()
	tep_set_print_raw()

A new API for printing event information is introduced:
   void tep_print_event(struct tep_handle *tep, struct trace_seq *s,
		        struct tep_record *record, const char *fmt, ...);
where "fmt" is a printf-like format string, followed by the event
fields to be printed. Supported fields:
 TEP_PRINT_PID, "%d" - event PID
 TEP_PRINT_CPU, "%d" - event CPU
 TEP_PRINT_COMM, "%s" - event command string
 TEP_PRINT_NAME, "%s" - event name
 TEP_PRINT_LATENCY, "%s" - event latency
 TEP_PRINT_TIME, %d - event time stamp. A divisor and precision
   can be specified as part of this format string:
   "%precision.divisord". Example:
   "%3.1000d" - divide the time by 1000 and print the first 3 digits
   before the dot. Thus, the time stamp "123456000" will be printed as
   "123.456"
 TEP_PRINT_INFO, "%s" - event information.
 TEP_PRINT_INFO_RAW, "%s" - event information, in raw format.

Example:
  tep_print_event(tep, s, record, "%16s-%-5d [%03d] %s %6.1000d %s %s",
		  TEP_PRINT_COMM, TEP_PRINT_PID, TEP_PRINT_CPU,
		  TEP_PRINT_LATENCY, TEP_PRINT_TIME, TEP_PRINT_NAME, TEP_PRINT_INFO);
Output:
	ls-11314 [005] d.h. 185207.366383 function __wake_up

Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: linux-trace-devel@vger.kernel.org
Cc: Patrick McLean <chutzpah@gentoo.org>
Link: http://lore.kernel.org/linux-trace-devel/20190801074959.22023-2-tz.stoyanov@gmail.com
Link: http://lore.kernel.org/lkml/20190805204355.041132030@goodmis.org
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/lib/traceevent/event-parse-api.c   |  40 ---
 tools/lib/traceevent/event-parse-local.h |   4 -
 tools/lib/traceevent/event-parse.c       | 322 +++++++++++++----------
 tools/lib/traceevent/event-parse.h       |  29 +-
 tools/perf/builtin-kmem.c                |   3 +-
 tools/perf/util/sort.c                   |   3 +-
 tools/perf/util/trace-event-parse.c      |   2 +-
 7 files changed, 203 insertions(+), 200 deletions(-)

diff --git a/tools/lib/traceevent/event-parse-api.c b/tools/lib/traceevent/event-parse-api.c
index 988587840c80..4faf52a65791 100644
--- a/tools/lib/traceevent/event-parse-api.c
+++ b/tools/lib/traceevent/event-parse-api.c
@@ -302,33 +302,6 @@ void tep_set_local_bigendian(struct tep_handle *tep, enum tep_endian endian)
 		tep->host_bigendian = endian;
 }
 
-/**
- * tep_is_latency_format - get if the latency output format is configured
- * @tep: a handle to the tep_handle
- *
- * This returns true if the latency output format is configured
- * If @tep is NULL, false is returned.
- */
-bool tep_is_latency_format(struct tep_handle *tep)
-{
-	if (tep)
-		return (tep->latency_format);
-	return false;
-}
-
-/**
- * tep_set_latency_format - set the latency output format
- * @tep: a handle to the tep_handle
- * @lat: non zero for latency output format
- *
- * This sets the latency output format
-  */
-void tep_set_latency_format(struct tep_handle *tep, int lat)
-{
-	if (tep)
-		tep->latency_format = lat;
-}
-
 /**
  * tep_is_old_format - get if an old kernel is used
  * @tep: a handle to the tep_handle
@@ -344,19 +317,6 @@ bool tep_is_old_format(struct tep_handle *tep)
 	return false;
 }
 
-/**
- * tep_set_print_raw - set a flag to force print in raw format
- * @tep: a handle to the tep_handle
- * @print_raw: the new value of the print_raw flag
- *
- * This sets a flag to force print in raw format
- */
-void tep_set_print_raw(struct tep_handle *tep, int print_raw)
-{
-	if (tep)
-		tep->print_raw = print_raw;
-}
-
 /**
  * tep_set_test_filters - set a flag to test a filter string
  * @tep: a handle to the tep_handle
diff --git a/tools/lib/traceevent/event-parse-local.h b/tools/lib/traceevent/event-parse-local.h
index 09aa142f7fdd..6e58ee1fe7c8 100644
--- a/tools/lib/traceevent/event-parse-local.h
+++ b/tools/lib/traceevent/event-parse-local.h
@@ -28,8 +28,6 @@ struct tep_handle {
 	enum tep_endian file_bigendian;
 	enum tep_endian host_bigendian;
 
-	int latency_format;
-
 	int old_format;
 
 	int cpus;
@@ -70,8 +68,6 @@ struct tep_handle {
 	int ld_offset;
 	int ld_size;
 
-	int print_raw;
-
 	int test_filters;
 
 	int flags;
diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
index 3e83636076b2..d1085aab9c43 100644
--- a/tools/lib/traceevent/event-parse.c
+++ b/tools/lib/traceevent/event-parse.c
@@ -5212,24 +5212,20 @@ static void pretty_print(struct trace_seq *s, void *data, int size, struct tep_e
 	}
 }
 
-/**
- * tep_data_latency_format - parse the data for the latency format
- * @tep: a handle to the trace event parser context
- * @s: the trace_seq to write to
- * @record: the record to read from
- *
+/*
  * This parses out the Latency format (interrupts disabled,
  * need rescheduling, in hard/soft interrupt, preempt count
  * and lock depth) and places it into the trace_seq.
  */
-void tep_data_latency_format(struct tep_handle *tep,
-			     struct trace_seq *s, struct tep_record *record)
+static void data_latency_format(struct tep_handle *tep, struct trace_seq *s,
+				char *format, struct tep_record *record)
 {
 	static int check_lock_depth = 1;
 	static int check_migrate_disable = 1;
 	static int lock_depth_exists;
 	static int migrate_disable_exists;
 	unsigned int lat_flags;
+	struct trace_seq sq;
 	unsigned int pc;
 	int lock_depth = 0;
 	int migrate_disable = 0;
@@ -5237,6 +5233,7 @@ void tep_data_latency_format(struct tep_handle *tep,
 	int softirq;
 	void *data = record->data;
 
+	trace_seq_init(&sq);
 	lat_flags = parse_common_flags(tep, data);
 	pc = parse_common_pc(tep, data);
 	/* lock_depth may not always exist */
@@ -5264,7 +5261,7 @@ void tep_data_latency_format(struct tep_handle *tep,
 	hardirq = lat_flags & TRACE_FLAG_HARDIRQ;
 	softirq = lat_flags & TRACE_FLAG_SOFTIRQ;
 
-	trace_seq_printf(s, "%c%c%c",
+	trace_seq_printf(&sq, "%c%c%c",
 	       (lat_flags & TRACE_FLAG_IRQS_OFF) ? 'd' :
 	       (lat_flags & TRACE_FLAG_IRQS_NOSUPPORT) ?
 	       'X' : '.',
@@ -5274,24 +5271,32 @@ void tep_data_latency_format(struct tep_handle *tep,
 	       hardirq ? 'h' : softirq ? 's' : '.');
 
 	if (pc)
-		trace_seq_printf(s, "%x", pc);
+		trace_seq_printf(&sq, "%x", pc);
 	else
-		trace_seq_putc(s, '.');
+		trace_seq_printf(&sq, ".");
 
 	if (migrate_disable_exists) {
 		if (migrate_disable < 0)
-			trace_seq_putc(s, '.');
+			trace_seq_printf(&sq, ".");
 		else
-			trace_seq_printf(s, "%d", migrate_disable);
+			trace_seq_printf(&sq, "%d", migrate_disable);
 	}
 
 	if (lock_depth_exists) {
 		if (lock_depth < 0)
-			trace_seq_putc(s, '.');
+			trace_seq_printf(&sq, ".");
 		else
-			trace_seq_printf(s, "%d", lock_depth);
+			trace_seq_printf(&sq, "%d", lock_depth);
 	}
 
+	if (sq.state == TRACE_SEQ__MEM_ALLOC_FAILED) {
+		s->state = TRACE_SEQ__MEM_ALLOC_FAILED;
+		return;
+	}
+
+	trace_seq_terminate(&sq);
+	trace_seq_puts(s, sq.buffer);
+	trace_seq_destroy(&sq);
 	trace_seq_terminate(s);
 }
 
@@ -5452,21 +5457,16 @@ int tep_cmdline_pid(struct tep_handle *tep, struct tep_cmdline *cmdline)
 	return cmdline->pid;
 }
 
-/**
- * tep_event_info - parse the data into the print format
- * @s: the trace_seq to write to
- * @event: the handle to the event
- * @record: the record to read from
- *
+/*
  * This parses the raw @data using the given @event information and
  * writes the print format into the trace_seq.
  */
-void tep_event_info(struct trace_seq *s, struct tep_event *event,
-		    struct tep_record *record)
+static void print_event_info(struct trace_seq *s, char *format, bool raw,
+			     struct tep_event *event, struct tep_record *record)
 {
 	int print_pretty = 1;
 
-	if (event->tep->print_raw || (event->flags & TEP_EVENT_FL_PRINTRAW))
+	if (raw || (event->flags & TEP_EVENT_FL_PRINTRAW))
 		tep_print_fields(s, record->data, record->size, event);
 	else {
 
@@ -5481,20 +5481,6 @@ void tep_event_info(struct trace_seq *s, struct tep_event *event,
 	trace_seq_terminate(s);
 }
 
-static bool is_timestamp_in_us(char *trace_clock, bool use_trace_clock)
-{
-	if (!trace_clock || !use_trace_clock)
-		return true;
-
-	if (!strcmp(trace_clock, "local") || !strcmp(trace_clock, "global")
-	    || !strcmp(trace_clock, "uptime") || !strcmp(trace_clock, "perf")
-	    || !strncmp(trace_clock, "mono", 4))
-		return true;
-
-	/* trace_clock is setting in tsc or counter mode */
-	return false;
-}
-
 /**
  * tep_find_event_by_record - return the event from a given record
  * @tep: a handle to the trace event parser context
@@ -5518,129 +5504,195 @@ tep_find_event_by_record(struct tep_handle *tep, struct tep_record *record)
 	return tep_find_event(tep, type);
 }
 
-/**
- * tep_print_event_task - Write the event task comm, pid and CPU
- * @tep: a handle to the trace event parser context
- * @s: the trace_seq to write to
- * @event: the handle to the record's event
- * @record: The record to get the event from
- *
- * Writes the tasks comm, pid and CPU to @s.
+/*
+ * Writes the timestamp of the record into @s. Time divisor and precision can be
+ * specified as part of printf @format string. Example:
+ *	"%3.1000d" - divide the time by 1000 and print the first 3 digits
+ *	before the dot. Thus, the timestamp "123456000" will be printed as
+ *	"123.456"
  */
-void tep_print_event_task(struct tep_handle *tep, struct trace_seq *s,
-			  struct tep_event *event,
-			  struct tep_record *record)
+static void print_event_time(struct tep_handle *tep, struct trace_seq *s,
+				 char *format, struct tep_event *event,
+				 struct tep_record *record)
+{
+	unsigned long long time;
+	char *divstr;
+	int prec = 0, pr;
+	int div = 0;
+	int p10 = 1;
+
+	if (isdigit(*(format + 1)))
+		prec = atoi(format + 1);
+	divstr = strchr(format, '.');
+	if (divstr && isdigit(*(divstr + 1)))
+		div = atoi(divstr + 1);
+	time = record->ts;
+	if (div)
+		time /= div;
+	pr = prec;
+	while (pr--)
+		p10 *= 10;
+
+	if (p10 > 1 && p10 < time)
+		trace_seq_printf(s, "%5llu.%0*llu", time / p10, prec, time % p10);
+	else
+		trace_seq_printf(s, "%12llu\n", time);
+}
+
+struct print_event_type {
+	enum {
+		EVENT_TYPE_INT = 1,
+		EVENT_TYPE_STRING,
+		EVENT_TYPE_UNKNOWN,
+	} type;
+	char format[32];
+};
+
+static void print_string(struct tep_handle *tep, struct trace_seq *s,
+			 struct tep_record *record, struct tep_event *event,
+			 const char *arg, struct print_event_type *type)
 {
-	void *data = record->data;
 	const char *comm;
 	int pid;
 
-	pid = parse_common_pid(tep, data);
-	comm = find_cmdline(tep, pid);
+	if (strncmp(arg, TEP_PRINT_LATENCY, strlen(TEP_PRINT_LATENCY)) == 0) {
+		data_latency_format(tep, s, type->format, record);
+	} else if (strncmp(arg, TEP_PRINT_COMM, strlen(TEP_PRINT_COMM)) == 0) {
+		pid = parse_common_pid(tep, record->data);
+		comm = find_cmdline(tep, pid);
+		trace_seq_printf(s, type->format, comm);
+	} else if (strncmp(arg, TEP_PRINT_INFO_RAW, strlen(TEP_PRINT_INFO_RAW)) == 0) {
+		print_event_info(s, type->format, true, event, record);
+	} else if (strncmp(arg, TEP_PRINT_INFO, strlen(TEP_PRINT_INFO)) == 0) {
+		print_event_info(s, type->format, false, event, record);
+	} else if  (strncmp(arg, TEP_PRINT_NAME, strlen(TEP_PRINT_NAME)) == 0) {
+		trace_seq_printf(s, type->format, event->name);
+	} else {
+		trace_seq_printf(s, "[UNKNOWN TEP TYPE %s]", arg);
+	}
 
-	if (tep->latency_format)
-		trace_seq_printf(s, "%8.8s-%-5d %3d", comm, pid, record->cpu);
-	else
-		trace_seq_printf(s, "%16s-%-5d [%03d]", comm, pid, record->cpu);
 }
 
-/**
- * tep_print_event_time - Write the event timestamp
- * @tep: a handle to the trace event parser context
- * @s: the trace_seq to write to
- * @event: the handle to the record's event
- * @record: The record to get the event from
- * @use_trace_clock: Set to parse according to the @tep->trace_clock
- *
- * Writes the timestamp of the record into @s.
- */
-void tep_print_event_time(struct tep_handle *tep, struct trace_seq *s,
-			  struct tep_event *event,
-			  struct tep_record *record,
-			  bool use_trace_clock)
+static void print_int(struct tep_handle *tep, struct trace_seq *s,
+		      struct tep_record *record, struct tep_event *event,
+		      int arg, struct print_event_type *type)
 {
-	unsigned long secs;
-	unsigned long usecs;
-	unsigned long nsecs;
-	int p;
-	bool use_usec_format;
+	int param;
 
-	use_usec_format = is_timestamp_in_us(tep->trace_clock, use_trace_clock);
-	if (use_usec_format) {
-		secs = record->ts / NSEC_PER_SEC;
-		nsecs = record->ts - secs * NSEC_PER_SEC;
+	switch (arg) {
+	case TEP_PRINT_CPU:
+		param = record->cpu;
+		break;
+	case TEP_PRINT_PID:
+		param = parse_common_pid(tep, record->data);
+		break;
+	case TEP_PRINT_TIME:
+		return print_event_time(tep, s, type->format, event, record);
+	default:
+		return;
 	}
+	trace_seq_printf(s, type->format, param);
+}
 
-	if (tep->latency_format) {
-		tep_data_latency_format(tep, s, record);
-	}
+static int tep_print_event_param_type(char *format,
+				      struct print_event_type *type)
+{
+	char *str = format + 1;
+	int i = 1;
 
-	if (use_usec_format) {
-		if (tep->flags & TEP_NSEC_OUTPUT) {
-			usecs = nsecs;
-			p = 9;
-		} else {
-			usecs = (nsecs + 500) / NSEC_PER_USEC;
-			/* To avoid usecs larger than 1 sec */
-			if (usecs >= USEC_PER_SEC) {
-				usecs -= USEC_PER_SEC;
-				secs++;
-			}
-			p = 6;
+	type->type = EVENT_TYPE_UNKNOWN;
+	while (*str) {
+		switch (*str) {
+		case 'd':
+		case 'u':
+		case 'i':
+		case 'x':
+		case 'X':
+		case 'o':
+			type->type = EVENT_TYPE_INT;
+			break;
+		case 's':
+			type->type = EVENT_TYPE_STRING;
+			break;
 		}
-
-		trace_seq_printf(s, " %5lu.%0*lu:", secs, p, usecs);
-	} else
-		trace_seq_printf(s, " %12llu:", record->ts);
+		str++;
+		i++;
+		if (type->type != EVENT_TYPE_UNKNOWN)
+			break;
+	}
+	memset(type->format, 0, 32);
+	memcpy(type->format, format, i < 32 ? i : 31);
+	return i;
 }
 
 /**
- * tep_print_event_data - Write the event data section
+ * tep_print_event - Write various event information
  * @tep: a handle to the trace event parser context
  * @s: the trace_seq to write to
- * @event: the handle to the record's event
  * @record: The record to get the event from
- *
- * Writes the parsing of the record's data to @s.
+ * @format: a printf format string. Supported event fileds:
+ *	TEP_PRINT_PID, "%d" - event PID
+ *	TEP_PRINT_CPU, "%d" - event CPU
+ *	TEP_PRINT_COMM, "%s" - event command string
+ *	TEP_PRINT_NAME, "%s" - event name
+ *	TEP_PRINT_LATENCY, "%s" - event latency
+ *	TEP_PRINT_TIME, %d - event time stamp. A divisor and precision
+ *			can be specified as part of this format string:
+ *			"%precision.divisord". Example:
+ *			"%3.1000d" - divide the time by 1000 and print the first
+ *			3 digits before the dot. Thus, the time stamp
+ *			"123456000" will be printed as "123.456"
+ *	TEP_PRINT_INFO, "%s" - event information. If any width is specified in
+ *			the format string, the event information will be printed
+ *			in raw format.
+ * Writes the specified event information into @s.
  */
-void tep_print_event_data(struct tep_handle *tep, struct trace_seq *s,
-			  struct tep_event *event,
-			  struct tep_record *record)
-{
-	static const char *spaces = "                    "; /* 20 spaces */
-	int len;
-
-	trace_seq_printf(s, " %s: ", event->name);
-
-	/* Space out the event names evenly. */
-	len = strlen(event->name);
-	if (len < 20)
-		trace_seq_printf(s, "%.*s", 20 - len, spaces);
-
-	tep_event_info(s, event, record);
-}
-
 void tep_print_event(struct tep_handle *tep, struct trace_seq *s,
-		     struct tep_record *record, bool use_trace_clock)
-{
+		     struct tep_record *record, const char *fmt, ...)
+{
+	struct print_event_type type;
+	char *format = strdup(fmt);
+	char *current = format;
+	char *str = format;
+	int offset;
+	va_list args;
 	struct tep_event *event;
 
-	event = tep_find_event_by_record(tep, record);
-	if (!event) {
-		int i;
-		int type = trace_parse_common_type(tep, record->data);
-
-		do_warning("ug! no event found for type %d", type);
-		trace_seq_printf(s, "[UNKNOWN TYPE %d]", type);
-		for (i = 0; i < record->size; i++)
-			trace_seq_printf(s, " %02x",
-					 ((unsigned char *)record->data)[i]);
+	if (!format)
 		return;
-	}
 
-	tep_print_event_task(tep, s, event, record);
-	tep_print_event_time(tep, s, event, record, use_trace_clock);
-	tep_print_event_data(tep, s, event, record);
+	event = tep_find_event_by_record(tep, record);
+	va_start(args, fmt);
+	while (*current) {
+		current = strchr(str, '%');
+		if (!current) {
+			trace_seq_puts(s, str);
+			break;
+		}
+		memset(&type, 0, sizeof(type));
+		offset = tep_print_event_param_type(current, &type);
+		*current = '\0';
+		trace_seq_puts(s, str);
+		current += offset;
+		switch (type.type) {
+		case EVENT_TYPE_STRING:
+			print_string(tep, s, record, event,
+				     va_arg(args, char*), &type);
+			break;
+		case EVENT_TYPE_INT:
+			print_int(tep, s, record, event,
+				  va_arg(args, int), &type);
+			break;
+		case EVENT_TYPE_UNKNOWN:
+		default:
+			trace_seq_printf(s, "[UNKNOWN TYPE]");
+			break;
+		}
+		str = current;
+
+	}
+	va_end(args);
+	free(format);
 }
 
 static int events_id_cmp(const void *a, const void *b)
diff --git a/tools/lib/traceevent/event-parse.h b/tools/lib/traceevent/event-parse.h
index 642f68ab5fb2..cf7f302eb44a 100644
--- a/tools/lib/traceevent/event-parse.h
+++ b/tools/lib/traceevent/event-parse.h
@@ -442,18 +442,18 @@ int tep_register_print_string(struct tep_handle *tep, const char *fmt,
 			      unsigned long long addr);
 bool tep_is_pid_registered(struct tep_handle *tep, int pid);
 
-void tep_print_event_task(struct tep_handle *tep, struct trace_seq *s,
-			  struct tep_event *event,
-			  struct tep_record *record);
-void tep_print_event_time(struct tep_handle *tep, struct trace_seq *s,
-			  struct tep_event *event,
-			  struct tep_record *record,
-			  bool use_trace_clock);
-void tep_print_event_data(struct tep_handle *tep, struct trace_seq *s,
-			  struct tep_event *event,
-			  struct tep_record *record);
+#define TEP_PRINT_INFO		"INFO"
+#define TEP_PRINT_INFO_RAW	"INFO_RAW"
+#define TEP_PRINT_COMM		"COMM"
+#define TEP_PRINT_LATENCY	"LATENCY"
+#define TEP_PRINT_NAME		"NAME"
+#define TEP_PRINT_PID		1U
+#define TEP_PRINT_TIME		2U
+#define TEP_PRINT_CPU		3U
+
 void tep_print_event(struct tep_handle *tep, struct trace_seq *s,
-		     struct tep_record *record, bool use_trace_clock);
+		     struct tep_record *record, const char *fmt, ...)
+	__attribute__ ((format (printf, 4, 5)));
 
 int tep_parse_header_page(struct tep_handle *tep, char *buf, unsigned long size,
 			  int long_size);
@@ -525,8 +525,6 @@ tep_find_event_by_name(struct tep_handle *tep, const char *sys, const char *name
 struct tep_event *
 tep_find_event_by_record(struct tep_handle *tep, struct tep_record *record);
 
-void tep_data_latency_format(struct tep_handle *tep,
-			     struct trace_seq *s, struct tep_record *record);
 int tep_data_type(struct tep_handle *tep, struct tep_record *rec);
 int tep_data_pid(struct tep_handle *tep, struct tep_record *rec);
 int tep_data_preempt_count(struct tep_handle *tep, struct tep_record *rec);
@@ -541,8 +539,6 @@ void tep_print_field(struct trace_seq *s, void *data,
 		     struct tep_format_field *field);
 void tep_print_fields(struct trace_seq *s, void *data,
 		      int size __maybe_unused, struct tep_event *event);
-void tep_event_info(struct trace_seq *s, struct tep_event *event,
-		    struct tep_record *record);
 int tep_strerror(struct tep_handle *tep, enum tep_errno errnum,
 		 char *buf, size_t buflen);
 
@@ -566,12 +562,9 @@ bool tep_is_file_bigendian(struct tep_handle *tep);
 void tep_set_file_bigendian(struct tep_handle *tep, enum tep_endian endian);
 bool tep_is_local_bigendian(struct tep_handle *tep);
 void tep_set_local_bigendian(struct tep_handle *tep, enum tep_endian endian);
-bool tep_is_latency_format(struct tep_handle *tep);
-void tep_set_latency_format(struct tep_handle *tep, int lat);
 int tep_get_header_page_size(struct tep_handle *tep);
 int tep_get_header_timestamp_size(struct tep_handle *tep);
 bool tep_is_old_format(struct tep_handle *tep);
-void tep_set_print_raw(struct tep_handle *tep, int print_raw);
 void tep_set_test_filters(struct tep_handle *tep, int test_filters);
 
 struct tep_handle *tep_alloc(void);
diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c
index 7eec0da64c46..378b09c910a8 100644
--- a/tools/perf/builtin-kmem.c
+++ b/tools/perf/builtin-kmem.c
@@ -750,7 +750,8 @@ static int parse_gfp_flags(struct evsel *evsel, struct perf_sample *sample,
 	}
 
 	trace_seq_init(&seq);
-	tep_event_info(&seq, evsel->tp_format, &record);
+	tep_print_event(evsel->tp_format->tep,
+			&seq, &record, "%s", TEP_PRINT_INFO);
 
 	str = strtok_r(seq.buffer, " ", &pos);
 	while (str) {
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 035355a9945e..4650704540c9 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -709,7 +709,8 @@ static char *get_trace_output(struct hist_entry *he)
 		tep_print_fields(&seq, he->raw_data, he->raw_size,
 				 evsel->tp_format);
 	} else {
-		tep_event_info(&seq, evsel->tp_format, &rec);
+		tep_print_event(evsel->tp_format->tep,
+				&seq, &rec, "%s", TEP_PRINT_INFO);
 	}
 	/*
 	 * Trim the buffer, it starts at 4KB and we're not going to
diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index 8e31a63045c3..5d6bfc70b210 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -109,7 +109,7 @@ void event_format__fprintf(struct tep_event *event,
 	record.data = data;
 
 	trace_seq_init(&s);
-	tep_event_info(&s, event, &record);
+	tep_print_event(event->tep, &s, &record, "%s", TEP_PRINT_INFO);
 	trace_seq_do_fprintf(&s, fp);
 	trace_seq_destroy(&s);
 }
-- 
2.21.0

[PATCH 20/47] libtraceevent: Remove tep_register_trace_clock()

[Arnaldo Carvalho de Melo]

From: Tzvetomir Stoyanov <tstoyanov@vmware.com>

The tep_register_trace_clock() API is used to instruct the traceevent
library how to print the event time stamps. As event print interface if
redesigned, this API is not needed any more.  The new event print API is
flexible and the user can specify how the time stamps are printed.

Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Patrick McLean <chutzpah@gentoo.org>
Cc: linux-trace-devel@vger.kernel.org
Link: http://lore.kernel.org/linux-trace-devel/20190801074959.22023-3-tz.stoyanov@gmail.com
Link: http://lore.kernel.org/lkml/20190805204355.195042846@goodmis.org
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/lib/traceevent/event-parse-local.h |  2 --
 tools/lib/traceevent/event-parse.c       | 11 -----------
 tools/lib/traceevent/event-parse.h       |  1 -
 3 files changed, 14 deletions(-)

diff --git a/tools/lib/traceevent/event-parse-local.h b/tools/lib/traceevent/event-parse-local.h
index 6e58ee1fe7c8..cee469803a34 100644
--- a/tools/lib/traceevent/event-parse-local.h
+++ b/tools/lib/traceevent/event-parse-local.h
@@ -81,8 +81,6 @@ struct tep_handle {
 
 	/* cache */
 	struct tep_event *last_event;
-
-	char *trace_clock;
 };
 
 void tep_free_event(struct tep_event *event);
diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
index d1085aab9c43..bb22238debfe 100644
--- a/tools/lib/traceevent/event-parse.c
+++ b/tools/lib/traceevent/event-parse.c
@@ -393,16 +393,6 @@ int tep_override_comm(struct tep_handle *tep, const char *comm, int pid)
 	return _tep_register_comm(tep, comm, pid, true);
 }
 
-int tep_register_trace_clock(struct tep_handle *tep, const char *trace_clock)
-{
-	tep->trace_clock = strdup(trace_clock);
-	if (!tep->trace_clock) {
-		errno = ENOMEM;
-		return -1;
-	}
-	return 0;
-}
-
 struct func_map {
 	unsigned long long		addr;
 	char				*func;
@@ -7057,7 +7047,6 @@ void tep_free(struct tep_handle *tep)
 		free_handler(handle);
 	}
 
-	free(tep->trace_clock);
 	free(tep->events);
 	free(tep->sort_events);
 	free(tep->func_resolver);
diff --git a/tools/lib/traceevent/event-parse.h b/tools/lib/traceevent/event-parse.h
index cf7f302eb44a..d438ee44289f 100644
--- a/tools/lib/traceevent/event-parse.h
+++ b/tools/lib/traceevent/event-parse.h
@@ -435,7 +435,6 @@ int tep_set_function_resolver(struct tep_handle *tep,
 void tep_reset_function_resolver(struct tep_handle *tep);
 int tep_register_comm(struct tep_handle *tep, const char *comm, int pid);
 int tep_override_comm(struct tep_handle *tep, const char *comm, int pid);
-int tep_register_trace_clock(struct tep_handle *tep, const char *trace_clock);
 int tep_register_function(struct tep_handle *tep, char *name,
 			  unsigned long long addr, char *mod);
 int tep_register_print_string(struct tep_handle *tep, const char *fmt,
-- 
2.21.0

[PATCH 21/47] libtraceevent: Change users plugin directory

[Arnaldo Carvalho de Melo]

From: Tzvetomir Stoyanov <tstoyanov@vmware.com>

To be compliant with XDG user directory layout, the user's plugin
directory is changed from ~/.traceevent/plugins to
~/.local/lib/traceevent/plugins/

Suggested-by: Patrick McLean <chutzpah@gentoo.org>
Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Patrick McLean <chutzpah@gentoo.org>
Cc: linux-trace-devel@vger.kernel.org
Link: https://lore.kernel.org/linux-trace-devel/20190313144206.41e75cf8@patrickm/
Link: http://lore.kernel.org/linux-trace-devel/20190801074959.22023-4-tz.stoyanov@gmail.com
Link: http://lore.kernel.org/lkml/20190805204355.344622683@goodmis.org
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/lib/traceevent/Makefile       | 6 +++---
 tools/lib/traceevent/event-plugin.c | 2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/tools/lib/traceevent/Makefile b/tools/lib/traceevent/Makefile
index 8352d53dcb5a..a39cdd0d890d 100644
--- a/tools/lib/traceevent/Makefile
+++ b/tools/lib/traceevent/Makefile
@@ -62,15 +62,15 @@ set_plugin_dir := 1
 
 # Set plugin_dir to preffered global plugin location
 # If we install under $HOME directory we go under
-# $(HOME)/.traceevent/plugins
+# $(HOME)/.local/lib/traceevent/plugins
 #
 # We dont set PLUGIN_DIR in case we install under $HOME
 # directory, because by default the code looks under:
-# $(HOME)/.traceevent/plugins by default.
+# $(HOME)/.local/lib/traceevent/plugins by default.
 #
 ifeq ($(plugin_dir),)
 ifeq ($(prefix),$(HOME))
-override plugin_dir = $(HOME)/.traceevent/plugins
+override plugin_dir = $(HOME)/.local/lib/traceevent/plugins
 set_plugin_dir := 0
 else
 override plugin_dir = $(libdir)/traceevent/plugins
diff --git a/tools/lib/traceevent/event-plugin.c b/tools/lib/traceevent/event-plugin.c
index 8ca28de9337a..e1f7ddd5a6cf 100644
--- a/tools/lib/traceevent/event-plugin.c
+++ b/tools/lib/traceevent/event-plugin.c
@@ -18,7 +18,7 @@
 #include "event-utils.h"
 #include "trace-seq.h"
 
-#define LOCAL_PLUGIN_DIR ".traceevent/plugins"
+#define LOCAL_PLUGIN_DIR ".local/lib/traceevent/plugins/"
 
 static struct registered_plugin_options {
 	struct registered_plugin_options	*next;
-- 
2.21.0