在 2016/10/30 00:52, Davidlohr Bueso 写道:
On Fri, 28 Oct 2016, Pan Xinhui wrote:
/*
* If we need to reschedule bail... so we can block.
+ * Use vcpu_is_preempted to detech lock holder preemption issue
^^ detect
ok. thanks for poingting it out.
+ * and break.
Could you please remove the rest of this comment? Its just noise to point out
that vcpu_is_preempted is a macro defined by arch/false. This is standard protocol
in the kernel.
fair enough.
Same goes for all locks you change with this.
Thanks,
Davidlohr
* vcpu_is_preempted is a macro defined by false if
+ * arch does not support vcpu preempted check,
*/
- if (need_resched())
+ if (need_resched() || vcpu_is_preempted(node_cpu(node->prev)))
goto unqueue;
cpu_relax_lowlatency();
--
2.4.11
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