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    SubjectRe: [patch] irq: use config_enabled(SMP) checks to cleanup irq_set_affinity() for UP
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    On Wed, 2012-06-06 at 18:36 -0700, Yinghai Lu wrote:
    > On Wed, Jun 6, 2012 at 4:29 PM, Suresh Siddha <suresh.b.siddha@intel.com> wrote:
    > > On Ingo's request, re-basing the previous version
    > > (http://marc.info/?l=linux-kernel&m=133667389223282) to the latest -tip
    > > tree. Thanks.
    > > ---
    > > From: Suresh Siddha <suresh.b.siddha@intel.com>
    > > Subject: irq: use config_enabled(CONFIG_SMP) checks to cleanup irq_set_affinity() for UP
    > >
    > > Use config_enabled(CONFIG_SMP) checks for cleaning up the ifdef CONFIG_SMP
    > > around irq_set_affinity routines in io_apic and irq_remapping subsystems.
    >
    > can you just use
    > if (nr_cpu_ids > 1)
    > checking instead
    > if config_enabled(CONFIG_SMP)

    Idea is to not have any extra runtime checks if CONFIG_SMP is enabled
    and which is when all the smp affinity routines are used/invoked.

    thanks,
    suresh




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