Re: [PATCH][2.5] fix preempt-issues with smp_call_function()

Andrew Morton (akpm@digeo.com)
Wed, 26 Feb 2003 02:28:19 -0800

Dave Jones <davej@codemonkey.org.uk> wrote:
>
> btw, (unrelated) shouldn't smp_call_function be doing magick checks
> with cpu_online() ?

Looks OK? It sprays the IPI out to all the other CPUs in cpu_online_map,
and waits for num_online_cpus()-1 CPUs to answer.

All very racy in the presence of CPUs going offline, but that's all over
the place. Depends how the offlining will be done I guess.

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