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[PATCH 03/10] tools lib traceevent: Factor out and export print_event_field[s]

From Namhyung Kim <namhyung@kernel.org>
Newsgroups linux.kernel
Subject [PATCH 03/10] tools lib traceevent: Factor out and export print_event_field[s]
Date 2015-12-15 16:40 +0100
Message-ID <qFZRM-64B-15@gated-at.bofh.it> (permalink)
References <qFZRL-64B-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

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The print_event_field() and print_event_field() are to print basic
information of a given field or event without the print format.  They'll
be used by dynamic sort keys later.

Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
 tools/lib/traceevent/event-parse.c | 125 ++++++++++++++++++++-----------------
 tools/lib/traceevent/event-parse.h |   4 ++
 2 files changed, 70 insertions(+), 59 deletions(-)

diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
index 68276f35e323..1b43f2b9aebe 100644
--- a/tools/lib/traceevent/event-parse.c
+++ b/tools/lib/traceevent/event-parse.c
@@ -4735,73 +4735,80 @@ static int is_printable_array(char *p, unsigned int len)
 	return 1;
 }
 
-static void print_event_fields(struct trace_seq *s, void *data,
-			       int size __maybe_unused,
-			       struct event_format *event)
+void print_event_field(struct trace_seq *s, void *data,
+		       struct format_field *field)
 {
-	struct format_field *field;
 	unsigned long long val;
 	unsigned int offset, len, i;
-
-	field = event->format.fields;
-	while (field) {
-		trace_seq_printf(s, " %s=", field->name);
-		if (field->flags & FIELD_IS_ARRAY) {
-			offset = field->offset;
-			len = field->size;
-			if (field->flags & FIELD_IS_DYNAMIC) {
-				val = pevent_read_number(event->pevent, data + offset, len);
-				offset = val;
-				len = offset >> 16;
-				offset &= 0xffff;
-			}
-			if (field->flags & FIELD_IS_STRING &&
-			    is_printable_array(data + offset, len)) {
-				trace_seq_printf(s, "%s", (char *)data + offset);
-			} else {
-				trace_seq_puts(s, "ARRAY[");
-				for (i = 0; i < len; i++) {
-					if (i)
-						trace_seq_puts(s, ", ");
-					trace_seq_printf(s, "%02x",
-							 *((unsigned char *)data + offset + i));
-				}
-				trace_seq_putc(s, ']');
-				field->flags &= ~FIELD_IS_STRING;
-			}
+	struct pevent *pevent = field->event->pevent;
+
+	if (field->flags & FIELD_IS_ARRAY) {
+		offset = field->offset;
+		len = field->size;
+		if (field->flags & FIELD_IS_DYNAMIC) {
+			val = pevent_read_number(pevent, data + offset, len);
+			offset = val;
+			len = offset >> 16;
+			offset &= 0xffff;
+		}
+		if (field->flags & FIELD_IS_STRING &&
+		    is_printable_array(data + offset, len)) {
+			trace_seq_printf(s, "%s", (char *)data + offset);
 		} else {
-			val = pevent_read_number(event->pevent, data + field->offset,
-						 field->size);
-			if (field->flags & FIELD_IS_POINTER) {
-				trace_seq_printf(s, "0x%llx", val);
-			} else if (field->flags & FIELD_IS_SIGNED) {
-				switch (field->size) {
-				case 4:
-					/*
-					 * If field is long then print it in hex.
-					 * A long usually stores pointers.
-					 */
-					if (field->flags & FIELD_IS_LONG)
-						trace_seq_printf(s, "0x%x", (int)val);
-					else
-						trace_seq_printf(s, "%d", (int)val);
-					break;
-				case 2:
-					trace_seq_printf(s, "%2d", (short)val);
-					break;
-				case 1:
-					trace_seq_printf(s, "%1d", (char)val);
-					break;
-				default:
-					trace_seq_printf(s, "%lld", val);
-				}
-			} else {
+			trace_seq_puts(s, "ARRAY[");
+			for (i = 0; i < len; i++) {
+				if (i)
+					trace_seq_puts(s, ", ");
+				trace_seq_printf(s, "%02x",
+						 *((unsigned char *)data + offset + i));
+			}
+			trace_seq_putc(s, ']');
+			field->flags &= ~FIELD_IS_STRING;
+		}
+	} else {
+		val = pevent_read_number(pevent, data + field->offset,
+					 field->size);
+		if (field->flags & FIELD_IS_POINTER) {
+			trace_seq_printf(s, "0x%llx", val);
+		} else if (field->flags & FIELD_IS_SIGNED) {
+			switch (field->size) {
+			case 4:
+				/*
+				 * If field is long then print it in hex.
+				 * A long usually stores pointers.
+				 */
 				if (field->flags & FIELD_IS_LONG)
-					trace_seq_printf(s, "0x%llx", val);
+					trace_seq_printf(s, "0x%x", (int)val);
 				else
-					trace_seq_printf(s, "%llu", val);
+					trace_seq_printf(s, "%d", (int)val);
+				break;
+			case 2:
+				trace_seq_printf(s, "%2d", (short)val);
+				break;
+			case 1:
+				trace_seq_printf(s, "%1d", (char)val);
+				break;
+			default:
+				trace_seq_printf(s, "%lld", val);
 			}
+		} else {
+			if (field->flags & FIELD_IS_LONG)
+				trace_seq_printf(s, "0x%llx", val);
+			else
+				trace_seq_printf(s, "%llu", val);
 		}
+	}
+}
+
+void print_event_fields(struct trace_seq *s, void *data,
+			int size __maybe_unused, struct event_format *event)
+{
+	struct format_field *field;
+
+	field = event->format.fields;
+	while (field) {
+		trace_seq_printf(s, " %s=", field->name);
+		print_event_field(s, data, field);
 		field = field->next;
 	}
 }
diff --git a/tools/lib/traceevent/event-parse.h b/tools/lib/traceevent/event-parse.h
index 6fc83c7edbe9..600c73277a6f 100644
--- a/tools/lib/traceevent/event-parse.h
+++ b/tools/lib/traceevent/event-parse.h
@@ -705,6 +705,10 @@ struct cmdline *pevent_data_pid_from_comm(struct pevent *pevent, const char *com
 					  struct cmdline *next);
 int pevent_cmdline_pid(struct pevent *pevent, struct cmdline *cmdline);
 
+void print_event_field(struct trace_seq *s, void *data,
+		       struct format_field *field);
+void print_event_fields(struct trace_seq *s, void *data,
+			int size __maybe_unused, struct event_format *event);
 void pevent_event_info(struct trace_seq *s, struct event_format *event,
 		       struct pevent_record *record);
 int pevent_strerror(struct pevent *pevent, enum pevent_errno errnum,
-- 
2.6.4

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Thread

[PATCHSET 00/10] perf tools: Support dynamic sort keys for tracepoints (v2) Namhyung Kim <namhyung@kernel.org> - 2015-12-15 16:40 +0100
  [PATCH 02/10] perf hist: Save raw_data/size for tracepoint events Namhyung Kim <namhyung@kernel.org> - 2015-12-15 16:40 +0100
    [PATCH v2.1] perf hist: Save raw_data/size for tracepoint events Namhyung Kim <namhyung@kernel.org> - 2015-12-17 09:20 +0100
      Re: [PATCH v2.1] perf hist: Save raw_data/size for tracepoint events Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-12-17 13:30 +0100
  [PATCH 01/10] perf hist: Pass struct sample to __hists__add_entry() Namhyung Kim <namhyung@kernel.org> - 2015-12-15 16:40 +0100
  [PATCH 03/10] tools lib traceevent: Factor out and export print_event_field[s] Namhyung Kim <namhyung@kernel.org> - 2015-12-15 16:40 +0100
  [PATCH 06/10] perf tools: Try to show pretty printed output for dynamic sort keys Namhyung Kim <namhyung@kernel.org> - 2015-12-15 16:40 +0100
    Re: [PATCH 06/10] perf tools: Try to show pretty printed output for  dynamic sort keys Jiri Olsa <jolsa@redhat.com> - 2015-12-20 15:20 +0100
      Re: [PATCH 06/10] perf tools: Try to show pretty printed output for  dynamic sort keys Namhyung Kim <namhyung@kernel.org> - 2015-12-21 09:40 +0100
  [PATCH 10/10] perf tools: Support shortcuts for events in dynamic sort keys Namhyung Kim <namhyung@kernel.org> - 2015-12-15 16:40 +0100
  [PATCH 07/10] perf tools: Add 'trace' sort key Namhyung Kim <namhyung@kernel.org> - 2015-12-15 16:40 +0100
  [PATCH 08/10] perf tools: Add --raw-trace option Namhyung Kim <namhyung@kernel.org> - 2015-12-15 16:40 +0100
    Re: [PATCH 08/10] perf tools: Add --raw-trace option Jiri Olsa <jolsa@redhat.com> - 2015-12-20 16:00 +0100
      Re: [PATCH 08/10] perf tools: Add --raw-trace option Namhyung Kim <namhyung@kernel.org> - 2015-12-21 09:50 +0100
        Re: [PATCH 08/10] perf tools: Add --raw-trace option Jiri Olsa <jolsa@redhat.com> - 2015-12-22 08:00 +0100
          Re: [PATCH 08/10] perf tools: Add --raw-trace option Namhyung Kim <namhyung@kernel.org> - 2015-12-22 17:30 +0100
  [PATCH 04/10] perf tools: Pass evlist to setup_sorting() Namhyung Kim <namhyung@kernel.org> - 2015-12-15 16:40 +0100
  [PATCH 05/10] perf tools: Add dynamic sort key for tracepoint events Namhyung Kim <namhyung@kernel.org> - 2015-12-15 16:40 +0100
    Re: [PATCH 05/10] perf tools: Add dynamic sort key for tracepoint  events Jiri Olsa <jolsa@redhat.com> - 2015-12-20 15:00 +0100
      Re: [PATCH 05/10] perf tools: Add dynamic sort key for tracepoint  events Namhyung Kim <namhyung@kernel.org> - 2015-12-20 15:10 +0100
  [PATCH 09/10] perf tools: Make 'trace' sort key default for tracepoint events Namhyung Kim <namhyung@kernel.org> - 2015-12-15 16:40 +0100
  Re: [PATCHSET 00/10] perf tools: Support dynamic sort keys for  tracepoints (v2) Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-12-17 01:20 +0100
    Re: [PATCHSET 00/10] perf tools: Support dynamic sort keys for  tracepoints (v2) Namhyung Kim <namhyung@kernel.org> - 2015-12-17 09:00 +0100
      Re: [PATCHSET 00/10] perf tools: Support dynamic sort keys for  tracepoints (v2) Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-12-17 13:30 +0100

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