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由 Waiman Long 提交于
There are use cases where it can be useful to have a cpus_read_trylock() function to work around circular lock dependency problem involving the cpu_hotplug_lock. Signed-off-by: NWaiman Long <longman@redhat.com> Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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