Eric Dumazet wrote:
Rik van Riel a écrit :
On Sun, 5 Feb 2006, Linux Kernel Mailing List wrote:
[PATCH] percpu data: only iterate over possible CPUs
This sched.c bit breaks Xen, and probably also other architectures
that have CPU hotplug. I suspect the reason is that during early
bootup only the boot CPU is online, so nothing initialises the
runqueues for CPUs that are brought up afterwards.
I suspect we can get rid of this problem quite easily by moving
runqueue initialisation to init_idle()...
Please fix Xen to match include/linux/cpumask.h documentation that says :
/*
* The following particular system cpumasks and operations manage
* possible, present and online cpus. Each of them is a fixed size
* bitmap of size NR_CPUS.
*
* #ifdef CONFIG_HOTPLUG_CPU
* cpu_possible_map - all NR_CPUS bits set
Note that this shouldn't have to be all NR_CPUs if the platform
can determine all possible hotpluggable CPUs.
--
SUSE Labs, Novell Inc.
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