This is a note to let you know that I've just added the patch titled
net: mv643xx_eth: update statistics timer from timer context only
to the 3.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-mv643xx_eth-update-statistics-timer-from-timer-context-only.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From b6f073a85799fc00d41250c4fc254d499d59d51f Mon Sep 17 00:00:00 2001
From: Sebastian Hesselbarth <sebastian.hesselbarth@xxxxxxxxx>
Date: Wed, 2 Oct 2013 12:57:20 +0200
Subject: net: mv643xx_eth: update statistics timer from timer context only
From: Sebastian Hesselbarth <sebastian.hesselbarth@xxxxxxxxx>
[ Upstream commit 041b4ddb84989f06ff1df0ca869b950f1ee3cb1c ]
Each port driver installs a periodic timer to update port statistics
by calling mib_counters_update. As mib_counters_update is also called
from non-timer context, we should not reschedule the timer there but
rather move it to timer-only context.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@xxxxxxxxx>
Acked-by: Jason Cooper <jason@xxxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/ethernet/marvell/mv643xx_eth.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
--- a/drivers/net/ethernet/marvell/mv643xx_eth.c
+++ b/drivers/net/ethernet/marvell/mv643xx_eth.c
@@ -1274,15 +1274,13 @@ static void mib_counters_update(struct m
p->rx_discard += rdlp(mp, RX_DISCARD_FRAME_CNT);
p->rx_overrun += rdlp(mp, RX_OVERRUN_FRAME_CNT);
spin_unlock_bh(&mp->mib_counters_lock);
-
- mod_timer(&mp->mib_counters_timer, jiffies + 30 * HZ);
}
static void mib_counters_timer_wrapper(unsigned long _mp)
{
struct mv643xx_eth_private *mp = (void *)_mp;
-
mib_counters_update(mp);
+ mod_timer(&mp->mib_counters_timer, jiffies + 30 * HZ);
}
Patches currently in stable-queue which might be from sebastian.hesselbarth@xxxxxxxxx are
queue-3.4/net-mv643xx_eth-update-statistics-timer-from-timer-context-only.patch
queue-3.4/net-mv643xx_eth-fix-orphaned-statistics-timer-crash.patch
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