From: Lai Jiangshan <laijs@cn.fujitsu.com>
To: Pekka Enberg <penberg@kernel.org>, Ingo Molnar <mingo@elte.hu>
Cc: linux-kernel@vger.kernel.org, Lai Jiangshan <laijs@cn.fujitsu.com>
Subject: [PATCH 10/11] kvm tools: protect shared global id in compat_mtx C.S.
Date: Mon, 12 Dec 2011 15:15:54 +0800 [thread overview]
Message-ID: <1323674155-17570-11-git-send-email-laijs@cn.fujitsu.com> (raw)
In-Reply-To: <1323674155-17570-1-git-send-email-laijs@cn.fujitsu.com>
The global id is shared, protect it when access it.
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
---
tools/kvm/guest_compat.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/tools/kvm/guest_compat.c b/tools/kvm/guest_compat.c
index de97df5..8dd451b 100644
--- a/tools/kvm/guest_compat.c
+++ b/tools/kvm/guest_compat.c
@@ -20,6 +20,7 @@ static LIST_HEAD(messages);
int compat__add_message(const char *title, const char *desc)
{
struct compat_message *msg;
+ int msg_id;
msg = malloc(sizeof(*msg));
if (msg == NULL)
@@ -33,12 +34,12 @@ int compat__add_message(const char *title, const char *desc)
mutex_lock(&compat_mtx);
- msg->id = id;
+ msg->id = msg_id = id++;
list_add_tail(&msg->list, &messages);
mutex_unlock(&compat_mtx);
- return id++;
+ return msg_id;
cleanup:
if (msg) {
--
1.7.4.4
next prev parent reply other threads:[~2011-12-12 7:14 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-12 7:15 [PATCH 00/11] kvm tools: cleanups Lai Jiangshan
2011-12-12 7:15 ` [PATCH 01/11] kvm tools: check condition before wait Lai Jiangshan
2011-12-12 7:15 ` [PATCH 02/11] kvm tools: fix function name Lai Jiangshan
2011-12-12 7:15 ` [PATCH 03/11] kvm tools: move threadpool.c to util/ Lai Jiangshan
2011-12-12 7:15 ` [PATCH 04/11] kvm tools: move rbtree.o " Lai Jiangshan
2011-12-12 7:15 ` [PATCH 05/11] kvm tools: add missing build output Lai Jiangshan
2011-12-12 7:15 ` [PATCH 06/11] kvm tools: move read-write.c to util/ Lai Jiangshan
2011-12-12 7:15 ` [PATCH 07/11] kvm tools: move util.c " Lai Jiangshan
2011-12-12 7:15 ` [PATCH 08/11] kvm tools: move strlcat() to util/strbuf.c Lai Jiangshan
2011-12-12 7:15 ` [PATCH 09/11] kvm tools: narrow the C.S. of compat_mtx Lai Jiangshan
2011-12-12 7:15 ` Lai Jiangshan [this message]
2011-12-12 7:15 ` [PATCH 11/11] kvm tools: remove duplicated code Lai Jiangshan
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