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Date: Tue, 25 Jun 2013 13:13:27 +1000 From: Benjamin Herrenschmidt <benh@...nel.crashing.org> To: Michael Ellerman <michael@...erman.id.au> Cc: "Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>, tglx@...utronix.de, peterz@...radead.org, tj@...nel.org, oleg@...hat.com, paulmck@...ux.vnet.ibm.com, rusty@...tcorp.com.au, mingo@...nel.org, akpm@...ux-foundation.org, namhyung@...nel.org, walken@...gle.com, vincent.guittot@...aro.org, laijs@...fujitsu.com, rostedt@...dmis.org, wangyun@...ux.vnet.ibm.com, xiaoguangrong@...ux.vnet.ibm.com, sbw@....edu, fweisbec@...il.com, zhong@...ux.vnet.ibm.com, nikunj@...ux.vnet.ibm.com, linux-pm@...r.kernel.org, linux-arch@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, Paul Mackerras <paulus@...ba.org>, Ian Munsie <imunsie@....ibm.com> Subject: Re: [PATCH 40/45] powerpc, irq: Use GFP_ATOMIC allocations in atomic context On Tue, 2013-06-25 at 12:58 +1000, Michael Ellerman wrote: > On Tue, Jun 25, 2013 at 12:13:04PM +1000, Benjamin Herrenschmidt wrote: > > On Tue, 2013-06-25 at 12:08 +1000, Michael Ellerman wrote: > > > We're not checking for allocation failure, which we should be. > > > > > > But this code is only used on powermac and 85xx, so it should probably > > > just be a TODO to fix this up to handle the failure. > > > > And what can we do if they fail ? > > Fail up the chain and not unplug the CPU presumably. BTW. Isn't Srivatsa series removing the need to stop_machine() for unplug ? That should mean we should be able to use GFP_KERNEL no ? Cheers, Ben. -- 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/
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