Re: [PATCH 40/45] powerpc, irq: Use GFP_ATOMIC allocations in atomic context

[PATCH 00/45] CPU hotplug: stop_machine()-free CPU hotplug, part 1 · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 01/45] CPU hotplug: Provide APIs to prevent CPU offline from atomic context · Srivatsa S. Bhat <hidden> · 2013-06-23
Re: [PATCH 01/45] CPU hotplug: Provide APIs to prevent CPU offline from atomic context · Steven Rostedt <rostedt@goodmis.org> · 2013-06-24
[PATCH 02/45] CPU hotplug: Clarify the usage of different synchronization APIs · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 03/45] Documentation, CPU hotplug: Recommend usage of get/put_online_cpus_atomic() · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 04/45] CPU hotplug: Add infrastructure to check lacking hotplug synchronization · Srivatsa S. Bhat <hidden> · 2013-06-23
Re: [PATCH 04/45] CPU hotplug: Add infrastructure to check lacking hotplug synchronization · Steven Rostedt <rostedt@goodmis.org> · 2013-06-24
Re: [PATCH 04/45] CPU hotplug: Add infrastructure to check lacking hotplug synchronization · Srivatsa S. Bhat <hidden> · 2013-06-25
[PATCH 05/45] CPU hotplug: Protect set_cpu_online() to avoid false-positives · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 06/45] CPU hotplug: Sprinkle debugging checks to catch locking bugs · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 07/45] CPU hotplug: Expose the new debug config option · Srivatsa S. Bhat <hidden> · 2013-06-23
Re: [PATCH 07/45] CPU hotplug: Expose the new debug config option · Sergei Shtylyov <hidden> · 2013-06-23
Re: [PATCH 07/45] CPU hotplug: Expose the new debug config option · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 08/45] CPU hotplug: Convert preprocessor macros to static inline functions · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 09/45] smp: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 10/45] sched/core: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 11/45] migration: Use raw_spin_lock/unlock since interrupts are already disabled · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 12/45] sched/fair: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 13/45] timer: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 14/45] sched/rt: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 15/45] rcu: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 16/45] tick-broadcast: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 17/45] time/clocksource: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 18/45] softirq: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 19/45] irq: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 20/45] net: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 21/45] block: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 22/45] percpu_counter: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
Re: [PATCH 22/45] percpu_counter: Use get/put_online_cpus_atomic() to prevent CPU offline · Tejun Heo <tj@kernel.org> · 2013-06-24
Re: [PATCH 22/45] percpu_counter: Use get/put_online_cpus_atomic() to prevent CPU offline · Tejun Heo <tj@kernel.org> · 2013-06-24
Re: [PATCH 22/45] percpu_counter: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-24
[PATCH 23/45] infiniband: ehca: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 24/45] [SCSI] fcoe: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 25/45] staging/octeon: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
Re: [PATCH 25/45] staging/octeon: Use get/put_online_cpus_atomic() to prevent CPU offline · Greg Kroah-Hartman <gregkh@linuxfoundation.org> · 2013-06-23
Re: [PATCH 25/45] staging/octeon: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
Re: [PATCH 25/45] staging/octeon: Use get/put_online_cpus_atomic() to prevent CPU offline · Joe Perches <joe@perches.com> · 2013-06-23
Re: [PATCH 25/45] staging/octeon: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-24
Re: [PATCH 25/45] staging/octeon: Use get/put_online_cpus_atomic() to prevent CPU offline · David Daney <hidden> · 2013-06-24
[PATCH 26/45] x86: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 27/45] perf/x86: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 28/45] KVM: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 29/45] kvm/vmx: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 30/45] x86/xen: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 31/45] alpha/smp: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
Re: [PATCH 31/45] alpha/smp: Use get/put_online_cpus_atomic() to prevent CPU offline · Matt Turner <mattst88@gmail.com> · 2013-06-23
Re: [PATCH 31/45] alpha/smp: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 32/45] blackfin/smp: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 33/45] cris/smp: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
Re: [PATCH 33/45] cris/smp: Use get/put_online_cpus_atomic() to prevent CPU offline · Jesper Nilsson <jesper.nilsson@axis.com> · 2013-06-24
[PATCH 34/45] hexagon/smp: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 35/45] ia64: irq, perfmon: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 36/45] ia64: smp, tlb: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 37/45] m32r: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 38/45] MIPS: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 39/45] mn10300: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 40/45] powerpc, irq: Use GFP_ATOMIC allocations in atomic context · Srivatsa S. Bhat <hidden> · 2013-06-23
Re: [PATCH 40/45] powerpc, irq: Use GFP_ATOMIC allocations in atomic context · Michael Ellerman <hidden> · 2013-06-25
Re: [PATCH 40/45] powerpc, irq: Use GFP_ATOMIC allocations in atomic context · Benjamin Herrenschmidt <benh@kernel.crashing.org> · 2013-06-25
Re: [PATCH 40/45] powerpc, irq: Use GFP_ATOMIC allocations in atomic context · Michael Ellerman <hidden> · 2013-06-25
Re: [PATCH 40/45] powerpc, irq: Use GFP_ATOMIC allocations in atomic context · Benjamin Herrenschmidt <benh@kernel.crashing.org> · 2013-06-25
Re: [PATCH 40/45] powerpc, irq: Use GFP_ATOMIC allocations in atomic context · Srivatsa S. Bhat <hidden> · 2013-06-25
[PATCH 41/45] powerpc: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 42/45] powerpc: Use get/put_online_cpus_atomic() to avoid false-positive warning · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 43/45] sh: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 44/45] sparc: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23
[PATCH 45/45] tile: Use get/put_online_cpus_atomic() to prevent CPU offline · Srivatsa S. Bhat <hidden> · 2013-06-23

From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: 2013-06-25 02:17:29
Also in: linux-arch, linux-pm, linuxppc-dev, lkml

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 ?

Cheers,
Ben.

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