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authorFrederic Weisbecker <fweisbec@gmail.com>2009-10-06 23:36:47 +0200
committerIngo Molnar <mingo@elte.hu>2009-10-07 08:36:10 +0200
commit03456a158d9067d2f657bec170506009db81756d (patch)
treee242a1751bd48cf8731165d6b71a952fd1936a69 /tools/perf/builtin-record.c
parentb209aa1f83964d49a332a7b6b818ebede5cdc6ef (diff)
downloadlinux-2.6.34-ux500-03456a158d9067d2f657bec170506009db81756d.tar.gz
perf tools: Merge trace.info content into perf.data
This drops the trace.info file and move its contents into the common perf.data file. This is done by creating a new trace_info section into this file. A user of perf headers needs to call perf_header__set_trace_info() to save the trace meta informations into the perf.data file. A file created by perf after his patch is unsupported by previous version because the size of the headers have increased. That said, it's two new fields that have been added in the end of the headers, and those could be ignored by previous versions if they just handled the dynamic header size and then ignore the unknow part. The offsets guarantee the compatibility. We'll do a -stable fix for that. But current previous versions handle the header size using its static size, not dynamic, then it's not backward compatible with trace records. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> LKML-Reference: <20091006213643.GA5343@nowhere> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/builtin-record.c')
-rw-r--r--tools/perf/builtin-record.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 494f8c7d752..59af03d80d0 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -17,7 +17,6 @@
#include "util/header.h"
#include "util/event.h"
#include "util/debug.h"
-#include "util/trace-event.h"
#include <unistd.h>
#include <sched.h>
@@ -566,17 +565,17 @@ static int __cmd_record(int argc, const char **argv)
else
header = perf_header__new();
-
if (raw_samples) {
- read_tracing_data(attrs, nr_counters);
+ perf_header__set_trace_info();
} else {
for (i = 0; i < nr_counters; i++) {
if (attrs[i].sample_type & PERF_SAMPLE_RAW) {
- read_tracing_data(attrs, nr_counters);
+ perf_header__set_trace_info();
break;
}
}
}
+
atexit(atexit_header);
if (!system_wide) {