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authorRoy Li <rongqing.li@windriver.com>2014-05-22 14:37:18 +0800
committerRichard Purdie <richard.purdie@linuxfoundation.org>2014-05-27 16:11:54 +0100
commitaba63bab07e26b748811fdc178a896b314d51cb1 (patch)
tree8091aaa7cd913c487d3baa029cf105155be9c899 /meta/recipes-kernel/lttng/babeltrace
parent359d2de19b2f6a51ac630486e63f8115ce305d59 (diff)
downloadpoky-aba63bab07e26b748811fdc178a896b314d51cb1.tar.gz
babeltrace: fix alignment issue
Fix alignment issue in babeltrace (From OE-Core rev: 862f14832d2d8a1917a5046d0299dbbbe6dc66da) Signed-off-by: Roy Li <rongqing.li@windriver.com> Signed-off-by: Saul Wold <sgw@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta/recipes-kernel/lttng/babeltrace')
-rw-r--r--meta/recipes-kernel/lttng/babeltrace/Fix-Align-buffers-from-objstack_alloc-on-sizeof-void.patch54
1 files changed, 54 insertions, 0 deletions
diff --git a/meta/recipes-kernel/lttng/babeltrace/Fix-Align-buffers-from-objstack_alloc-on-sizeof-void.patch b/meta/recipes-kernel/lttng/babeltrace/Fix-Align-buffers-from-objstack_alloc-on-sizeof-void.patch
new file mode 100644
index 0000000000..8e81d2d781
--- /dev/null
+++ b/meta/recipes-kernel/lttng/babeltrace/Fix-Align-buffers-from-objstack_alloc-on-sizeof-void.patch
@@ -0,0 +1,54 @@
1From cae67efbd9ddf2cee6bbefec076dc8933ababc43 Mon Sep 17 00:00:00 2001
2From: =?UTF-8?q?Fredrik=20Markstr=C3=B6m?= <fredrik.markstrom@gmail.com>
3Date: Fri, 16 May 2014 10:10:38 +0800
4Subject: [PATCH] Fix: Align buffers from objstack_alloc on sizeof(void *)
5MIME-Version: 1.0
6Content-Type: text/plain; charset=UTF-8
7Content-Transfer-Encoding: 8bit
8
9Upstream-Status: Backport
10
11The buffers from objstack_alloc will store pointers, so they must
12be aligned on a pointer's size, or else it will cause issues on the
13CPUs which do not support unaligned addresses access.
14
15Signed-off-by: Fredrik Markstrom <fredrik.markstrom@gmail.com>
16Signed-off-by: Roy Li <rongqing.li@windriver.com>
17Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
18---
19 formats/ctf/metadata/objstack.c | 5 ++++-
20 1 file changed, 4 insertions(+), 1 deletion(-)
21
22diff --git a/formats/ctf/metadata/objstack.c b/formats/ctf/metadata/objstack.c
23index 9e264a4..14d9252 100644
24--- a/formats/ctf/metadata/objstack.c
25+++ b/formats/ctf/metadata/objstack.c
26@@ -27,6 +27,7 @@
27 #include <stdlib.h>
28 #include <babeltrace/list.h>
29 #include <babeltrace/babeltrace-internal.h>
30+#include <babeltrace/align.h>
31
32 #define OBJSTACK_INIT_LEN 128
33 #define OBJSTACK_POISON 0xcc
34@@ -39,7 +40,7 @@ struct objstack_node {
35 struct bt_list_head node;
36 size_t len;
37 size_t used_len;
38- char data[];
39+ char __attribute__ ((aligned (sizeof(void *)))) data[];
40 };
41
42 BT_HIDDEN
43@@ -118,6 +119,8 @@ void *objstack_alloc(struct objstack *objstack, size_t len)
44 struct objstack_node *last_node;
45 void *p;
46
47+ len = ALIGN(len, sizeof(void *));
48+
49 /* Get last node */
50 last_node = bt_list_entry(objstack->head.prev,
51 struct objstack_node, node);
52--
531.7.10.4
54