do_boot_cpu can deadlock?

From: Oleg Nesterov
Date: Thu Oct 23 2008 - 13:01:41 EST

Hmm. arch/x86/kernel/smpboot.c:do_boot_cpu() can deadlock ?

It is called from _cpu_up() under cpu_hotplug_begin(), and it
waits for Again, if we have the pending work which
needs get_online_cpus() we seem to have problems.


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