Hi, devm_alloc_percpu() will allocate per-cpu memory and memset allocated block content to 0.
> -----Original Message----- > From: Madalin-cristian Bucur [mailto:madalin.bu...@nxp.com] > Sent: Monday, October 30, 2017 1:08 PM > To: yuan linyu; netdev@vger.kernel.org > Cc: David S . Miller; Yuan, Linyu (NSB - CN/Shanghai) > Subject: RE: [PATCH net-next] net: dpaa: remove init which already done in > per-cpu allocation > > Hi Yuan, > > Can you please give more details about this change you are proposing? > > Regards, > Madalin > > > -----Original Message----- > > From: netdev-ow...@vger.kernel.org > [mailto:netdev-ow...@vger.kernel.org] > > On Behalf Of yuan linyu > > Sent: Sunday, October 29, 2017 3:49 AM > > To: netdev@vger.kernel.org > > Cc: David S . Miller <da...@davemloft.net>; yuan linyu > > <linyu.y...@alcatel-sbell.com.cn> > > Subject: [PATCH net-next] net: dpaa: remove init which already done in > > per-cpu allocation > > > > From: yuan linyu <linyu.y...@alcatel-sbell.com.cn> > > > > Signed-off-by: yuan linyu <linyu.y...@alcatel-sbell.com.cn> > > --- > > drivers/net/ethernet/freescale/dpaa/dpaa_eth.c | 4 ---- > > 1 file changed, 4 deletions(-) > > > > diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c > > b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c > > index a8d0be8..1ccc316 100644 > > --- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c > > +++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c > > @@ -2814,10 +2814,6 @@ static int dpaa_eth_probe(struct > platform_device > > *pdev) > > err = -ENOMEM; > > goto free_dpaa_fqs; > > } > > - for_each_possible_cpu(i) { > > - percpu_priv = per_cpu_ptr(priv->percpu_priv, i); > > - memset(percpu_priv, 0, sizeof(*percpu_priv)); > > - } > > > > priv->num_tc = 1; > > netif_set_real_num_tx_queues(net_dev, priv->num_tc * > > DPAA_TC_TXQ_NUM); > > -- > > 2.7.4 > >
