[PATCH 01/12] perf tools: Add __data_loc support

From: Hitoshi Mitake
Date: Fri Jan 22 2010 - 08:39:26 EST

This patch is required to test the next patch for perf lock.

At 064739bc4b3d7f424b2f25547e6611bcf0132415 ,
support for the modifier "__data_loc" of format is added.

But, when I wanted to parse format of lock_acquired (or some
event else), raw_field_ptr() did not returned correct pointer.

So I modified raw_field_ptr() like this patch. Then
raw_field_ptr() works well.

Signed-off-by: Hitoshi Mitake <mitake@xxxxxxxxxxxxxxxxxxxxx>
Acked-by: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Tom Zanussi <tzanussi@xxxxxxxxx>
Cc: Steven Rostedt <srostedt@xxxxxxxxxx>
tools/perf/util/trace-event-parse.c | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index c5c32be..13aea80 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -1925,6 +1925,13 @@ void *raw_field_ptr(struct event *event, const char *name, void *data)
if (!field)
return NULL;

+ if (field->flags & FIELD_IS_STRING) {
+ int offset;
+ offset = *(int *)(data + field->offset);
+ offset &= 0xffff;
+ return data + offset;
+ }
return data + field->offset;


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