Ashok Raj <[email protected]> wrote:
>
> +static void flat_send_IPI_allbutself(int vector)
> +{
> + cpumask_t mask;
> + /*
> + * if there are no other CPUs in the system then
> + * we get an APIC send error if we try to broadcast.
> + * thus we have to avoid sending IPIs in this case.
> + */
> + get_cpu();
> + mask = cpu_online_map;
> + cpu_clear(smp_processor_id(), mask);
> +
> + if (cpus_weight(mask) >= 1)
> + flat_send_IPI_mask(mask, vector);
> +
> + put_cpu();
> +}
It would be more idiomatic to use preempt_disable() and preempt_enable() in
place of get_cpu() and put_cpu() here.
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