Re: [patch 5/8] x86_64:Dont do broadcast IPIs when hotplug is enabled in flat mode.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



>  static void flat_send_IPI_allbutself(int vector)
>  {
> +#ifndef CONFIG_HOTPLUG_CPU
>  	if (((num_online_cpus()) - 1) >= 1)
>  		__send_IPI_shortcut(APIC_DEST_ALLBUT, vector,APIC_DEST_LOGICAL);
> +#else
> +	cpumask_t allbutme = cpu_online_map;
> +	int me = get_cpu(); /* Ensure we are not preempted when we clear */
> +	cpu_clear(me, allbutme);
> +	flat_send_IPI_mask(allbutme, vector);
> +	put_cpu();

This still needs the num_online_cpus()s check.

-Andi
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]
  Powered by Linux