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perf report: Print out raw events in hexa

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Print out events in hexa dump format, when -D is specified:

0x4868 [0x48]: event: 1
.
. ... raw event: size 72 bytes
.  0000:  01 00 00 00 00 00 48 00 d4 72 00 00 d4 72 00 00  ......H..r...r.
.  0010:  00 00 40 f2 3e 00 00 00 00 30 01 00 00 00 00 00  ..@.>....0.....
.  0020:  00 00 00 00 00 00 00 00 2f 75 73 72 2f 6c 69 62  ......../usr/li
.  0030:  36 34 2f 6c 69 62 65 6c 66 2d 30 2e 31 34 31 2e  64/libelf-0.141
.  0040:  73 6f 00 00 00 00 00 00                          f-0.141
.
0x4868 [0x48]: PERF_EVENT_MMAP 29396: [0x3ef2400000(0x13000) @ (nil)]: /usr/lib64/libelf-0.141.so

This helps the debugging of mis-parsing of data files, and helps
the addition of new sample/trace formats.

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: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2009-06-14 14:44:07 +02:00
parent c17c2db1f3
commit 8465b05046
1 changed files with 35 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
tools/perf/builtin-report.c
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@ -1095,9 +1095,43 @@ process_period_event(event_t *event, unsigned long offset, unsigned long head)
return 0;
}
static void trace_event(event_t *event)
{
unsigned char *raw_event = (void *)event;
int i, j;
if (!dump_trace)
return;
dprintf(".\n. ... raw event: size %d bytes\n", event->header.size);
for (i = 0; i < event->header.size; i++) {
if ((i & 15) == 0)
dprintf(". %04x: ", i);
dprintf(" %02x", raw_event[i]);
if (((i & 15) == 15) || i == event->header.size-1) {
dprintf(" ");
for (j = 0; j < 15-(i & 15); j++)
dprintf(" ");
for (j = 0; j < (i & 15); j++) {
if (isprint(raw_event[i-15+j]))
dprintf("%c", raw_event[i-15+j]);
else
dprintf(".");
}
dprintf("\n");
}
}
dprintf(".\n");
}
static int
process_event(event_t *event, unsigned long offset, unsigned long head)
{
trace_event(event);
if (event->header.misc & PERF_EVENT_MISC_OVERFLOW)
return process_overflow_event(event, offset, head);
@ -1204,7 +1238,7 @@ static int __cmd_report(void)
size = event->header.size;
dprintf("%p [%p]: event: %d\n",
dprintf("\n%p [%p]: event: %d\n",
(void *)(offset + head),
(void *)(long)event->header.size,
event->header.type);