From: WANG Chao <chao.wang@ucloud.cn>
To: Borislav Petkov <bp@alien8.de>
Cc: Tony Luck <tony.luck@intel.com>,
linux-kernel@vger.kernel.org, linux-edac@vger.kernel.org
Subject: [PATCH 2/3] RAS/CEC: make ces_entered smp safe
Date: Thu, 18 Apr 2019 11:41:14 +0800 [thread overview]
Message-ID: <20190418034115.75954-2-chao.wang@ucloud.cn> (raw)
Message-ID: <20190418034114.0noe3v9snz7boT48VtB9RRcs7Pvjx5Z2VVKy83-U3fY@z> (raw)
In-Reply-To: <20190418034115.75954-1-chao.wang@ucloud.cn>
ces_entered should be put in a critical section to avoid race condition.
Signed-off-by: WANG Chao <chao.wang@ucloud.cn>
---
drivers/ras/cec.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/ras/cec.c b/drivers/ras/cec.c
index 2e0bf1269c31..702e4c02c713 100644
--- a/drivers/ras/cec.c
+++ b/drivers/ras/cec.c
@@ -286,10 +286,10 @@ int cec_add_elem(u64 pfn)
if (!ce_arr.array || ce_arr.disabled)
return -ENODEV;
- ca->ces_entered++;
-
mutex_lock(&ce_mutex);
+ ca->ces_entered++;
+
if (ca->n == MAX_ELEMS)
WARN_ON(!del_lru_elem_unlocked(ca));
--
2.21.0
next prev parent reply other threads:[~2019-04-18 3:41 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-18 3:41 [1/3] RAS/CEC: fix __find_elem WANG Chao
2019-04-18 3:41 ` [PATCH 1/3] " WANG Chao
2019-04-18 3:41 ` WANG Chao [this message]
2019-04-18 3:41 ` [PATCH 2/3] RAS/CEC: make ces_entered smp safe WANG Chao
2019-04-20 10:19 ` [tip:ras/core] RAS/CEC: Increment cec_entered under the mutex lock tip-bot for Borislav Petkov
2019-04-20 10:19 ` tip-bot for WANG Chao
2019-04-20 10:22 ` tip-bot for Borislav Petkov
2019-04-20 10:22 ` tip-bot for WANG Chao
2019-04-18 3:41 ` [3/3] RAS/CEC: immediate soft-offline page when count_threshold == 1 WANG Chao
2019-04-18 3:41 ` [PATCH 3/3] " WANG Chao
2019-04-20 11:57 ` [3/3] " Borislav Petkov
2019-04-20 11:57 ` [PATCH 3/3] " Borislav Petkov
2019-04-24 2:43 ` [3/3] " WANG Chao
2019-04-24 2:43 ` [PATCH 3/3] " WANG Chao
2019-04-24 10:26 ` [3/3] " Borislav Petkov
2019-04-24 10:26 ` [PATCH 3/3] " Borislav Petkov
2019-04-25 7:56 ` [1/3] RAS/CEC: fix __find_elem WANG Chao
2019-04-25 7:56 ` [PATCH 1/3] " WANG Chao
2019-04-25 8:05 ` [1/3] " WANG Chao
2019-04-25 8:05 ` [PATCH 1/3] " WANG Chao
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190418034115.75954-2-chao.wang@ucloud.cn \
--to=chao.wang@ucloud.cn \
--cc=bp@alien8.de \
--cc=linux-edac@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=tony.luck@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).