perf trace: Add string/dynamic cases to format_flags

Needed for distinguishing string fields in event stream processing.

Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: rostedt@goodmis.org
Cc: lizf@cn.fujitsu.com
Cc: hch@infradead.org
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <1254809398-8078-4-git-send-email-tzanussi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 24 insertions, 0 deletions

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index de3fc8bf8bfe..6f851f98b5b4 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -721,6 +721,24 @@ static int event_read_id(void)
         return -1;
 }
 
+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 (!strcmp(field->type, "__data_loc"))
+                return 1;
+
+        return 0;
+}
+
 static int event_read_fields(struct event *event, struct format_field **fields)
 {
         struct format_field *field = NULL;
@@ -865,6 +883,12 @@ static int event_read_fields(struct event *event, struct format_field **fields)
                         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, (char *)";"))
                         goto fail;
                 free_token(token);