perf session: Add missing members to perf_event__attr_swap()

The perf_event__attr_swap() method needs to swap all members of struct
perf_event_attr.  Add missing ones.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1382099356-4918-7-git-send-email-adrian.hunter@intel.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/session.c

@@ -453,6 +453,9 @@ void perf_event__attr_swap(struct perf_event_attr *attr)
 	attr->bp_type		= bswap_32(attr->bp_type);
 	attr->bp_addr		= bswap_64(attr->bp_addr);
 	attr->bp_len		= bswap_64(attr->bp_len);
+	attr->branch_sample_type = bswap_64(attr->branch_sample_type);
+	attr->sample_regs_user	 = bswap_64(attr->sample_regs_user);
+	attr->sample_stack_user  = bswap_32(attr->sample_stack_user);
 
 	swap_bitfield((u8 *) (&attr->read_format + 1), sizeof(u64));
 }