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Date: Tue, 1 Aug 2017 19:42:42 -0700 From: Stephen Hemminger <stephen@...workplumber.org> To: Florian Fainelli <f.fainelli@...il.com> Cc: netdev@...r.kernel.org, Stephen Hemminger <sthemmin@...rosoft.com>, Haiyang Zhang <haiyangz@...rosoft.com>, open list <linux-kernel@...r.kernel.org>, edumazet@...gle.com, "open list:Hyper-V CORE AND DRIVERS" <devel@...uxdriverproject.org>, davem@...emloft.net Subject: Re: [PATCH net 6/7] netvsc: Initialize 64-bit stats seqcount On Tue, 1 Aug 2017 12:11:12 -0700 Florian Fainelli <f.fainelli@...il.com> wrote: > On 32-bit hosts and with CONFIG_DEBUG_LOCK_ALLOC we should be seeing a > lockdep splat indicating this seqcount is not correctly initialized, fix > that. In commit 6c80f3fc2398 ("netvsc: report per-channel stats in > ethtool statistics") netdev_alloc_pcpu_stats() was removed in favor of > open-coding the 64-bits statistics, except that u64_stats_init() was > missed. > > Fixes: 6c80f3fc2398 ("netvsc: report per-channel stats in ethtool statistics") > Signed-off-by: Florian Fainelli <f.fainelli@...il.com> > --- > drivers/net/hyperv/netvsc.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c > index 0a9167dd72fb..96f90c75d1b7 100644 > --- a/drivers/net/hyperv/netvsc.c > +++ b/drivers/net/hyperv/netvsc.c > @@ -1302,6 +1302,8 @@ int netvsc_device_add(struct hv_device *device, > struct netvsc_channel *nvchan = &net_device->chan_table[i]; > > nvchan->channel = device->channel; > + u64_stats_init(&nvchan->tx_stats.syncp); > + u64_stats_init(&nvchan->rx_stats.syncp); > } > > /* Enable NAPI handler before init callbacks */ Looks good, thanks. 32 bit guests are still supported but rarely tested. Signed-off-by: Stephen Hemminger <sthemmin@...rosoft.com>
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