From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: Re: [BUG] net: cpu offline cause napi stall Date: Wed, 01 Jun 2011 22:03:12 +0200 Message-ID: <1306958592.3946.0.camel@edumazet-laptop> References: <20110601103356.GA45482@tuxmaker.boeblingen.de.ibm.com> <1306930399.3476.1.camel@edumazet-laptop> <20110601163628.GA2418@osiris.boeblingen.de.ibm.com> <1306947321.2890.5.camel@edumazet-laptop> <20110601181253.GA2374@osiris.boeblingen.de.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <20110601181253.GA2374@osiris.boeblingen.de.ibm.com> Sender: netdev-owner@vger.kernel.org List-Archive: List-Post: To: Heiko Carstens Cc: Frank Blaschka , davem@davemloft.net, netdev@vger.kernel.org, linux-s390@vger.kernel.org List-ID: Le mercredi 01 juin 2011 =C3=A0 20:12 +0200, Heiko Carstens a =C3=A9cri= t : > On Wed, Jun 01, 2011 at 06:55:21PM +0200, Eric Dumazet wrote: > > > + /* Append NAPI poll list from offline CPU. */ > > > + list_splice_init(&oldsd->poll_list, &sd->poll_list); > > > =20 > > > raise_softirq_irqoff(NET_TX_SOFTIRQ); > > > local_irq_enable(); > >=20 > > Please make sure we raise NET_RX_SOFTIRQ on new cpu if necessary. >=20 > Well, see two lines below the list_splice_init() call ;) I see nothing... NET_TX_SOFTIRQ and NET_RX_SOFTIRQ are not the same=20