perf record: Intercept all events

The event interception we need to do in 'perf record' to create
a list of all DSOs in PERF_RECORD_MMAP events wasn't seeing all
events, make sure that happens by checking size agains
event_t->header.size.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1263586107-1756-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 614fa9a..7bb9ca1 100644 (file)
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -113,16 +113,24 @@ static void write_output(void *buf, size_t size)
 
 static void write_event(event_t *buf, size_t size)
 {
-       /*
-       * Add it to the list of DSOs, so that when we finish this
-        * record session we can pick the available build-ids.
-        */
-       if (buf->header.type == PERF_RECORD_MMAP) {
-               struct list_head *head = &dsos__user;
-               if (buf->mmap.header.misc == 1)
-                       head = &dsos__kernel;
-               __dsos__findnew(head, buf->mmap.filename);
-       }
+       size_t processed_size = buf->header.size;
+       event_t *ev = buf;
+
+       do {
+               /*
+               * Add it to the list of DSOs, so that when we finish this
+                * record session we can pick the available build-ids.
+                */
+               if (ev->header.type == PERF_RECORD_MMAP) {
+                       struct list_head *head = &dsos__user;
+                       if (ev->header.misc == 1)
+                               head = &dsos__kernel;
+                       __dsos__findnew(head, ev->mmap.filename);
+               }
+
+               ev = ((void *)ev) + ev->header.size;
+               processed_size += ev->header.size;
+       } while (processed_size < size);
 
        write_output(buf, size);
 }