diff -urN -x 'build-*' -x '*~' -x Make -x scripts linux-2.6.15-rc5/arch/i386/kernel/smpboot.c work-2.6.15-rc5/arch/i386/kernel/smpboot.c
--- linux-2.6.15-rc5/arch/i386/kernel/smpboot.c 2005-12-06 17:00:36.000000000 +0100
+++ work-2.6.15-rc5/arch/i386/kernel/smpboot.c 2005-12-06 17:06:48.000000000 +0100
@@ -1351,6 +1352,9 @@
fixup_irqs(map);
/* It's now safe to remove this processor from the online map */
cpu_clear(cpu, cpu_online_map);
+
+ if (1 == num_online_cpus())
+ alternatives_smp_switch(0);
return 0;
}
Is that really safe there? Ideally you want to do the switch when the
processor going offline is no longer executing kernel code.
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