[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <lsq.1396221815.948495711@decadent.org.uk>
Date: Mon, 31 Mar 2014 00:23:35 +0100
From: Ben Hutchings <ben@...adent.org.uk>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC: akpm@...ux-foundation.org, "Borislav Petkov" <bp@...e.de>
Subject: [PATCH 3.2 117/200] EDAC: Correct workqueue setup path
3.2.56-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Borislav Petkov <bp@...e.de>
commit cb6ef42e516cb8948f15e4b70dc03af8020050a2 upstream.
We're using edac_mc_workq_setup() both on the init path, when
we load an edac driver and when we change the polling period
(edac_mc_reset_delay_period) through /sys/.../edac_mc_poll_msec.
On that second path we don't need to init the workqueue which has been
initialized already.
Thanks to Tejun for workqueue insights.
Signed-off-by: Borislav Petkov <bp@...e.de>
Link: http://lkml.kernel.org/r/1391457913-881-1-git-send-email-prarit@redhat.com
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
drivers/edac/edac_mc.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
--- a/drivers/edac/edac_mc.c
+++ b/drivers/edac/edac_mc.c
@@ -323,7 +323,8 @@ static void edac_mc_workq_function(struc
*
* called with the mem_ctls_mutex held
*/
-static void edac_mc_workq_setup(struct mem_ctl_info *mci, unsigned msec)
+static void edac_mc_workq_setup(struct mem_ctl_info *mci, unsigned msec,
+ bool init)
{
debugf0("%s()\n", __func__);
@@ -331,7 +332,9 @@ static void edac_mc_workq_setup(struct m
if (mci->op_state != OP_RUNNING_POLL)
return;
- INIT_DELAYED_WORK(&mci->work, edac_mc_workq_function);
+ if (init)
+ INIT_DELAYED_WORK(&mci->work, edac_mc_workq_function);
+
queue_delayed_work(edac_workqueue, &mci->work, msecs_to_jiffies(msec));
}
@@ -391,7 +394,7 @@ void edac_mc_reset_delay_period(int valu
list_for_each(item, &mc_devices) {
mci = list_entry(item, struct mem_ctl_info, link);
- edac_mc_workq_setup(mci, (unsigned long) value);
+ edac_mc_workq_setup(mci, value, false);
}
mutex_unlock(&mem_ctls_mutex);
@@ -539,7 +542,7 @@ int edac_mc_add_mc(struct mem_ctl_info *
/* This instance is NOW RUNNING */
mci->op_state = OP_RUNNING_POLL;
- edac_mc_workq_setup(mci, edac_mc_get_poll_msec());
+ edac_mc_workq_setup(mci, edac_mc_get_poll_msec(), true);
} else {
mci->op_state = OP_RUNNING_INTERRUPT;
}
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists