Re: [PATCH v5 7/9] x86, xen: support vcpu preempted check

2016-10-20 Thread Juergen Gross
Corrected xen-devel mailing list address, added other Xen maintainers On 20/10/16 23:27, Pan Xinhui wrote: > From: Juergen Gross > > Support the vcpu_is_preempted() functionality under Xen. This will > enhance lock performance on overcommitted hosts (more runnable vcpus > than

[PATCH v5 7/9] x86, xen: support vcpu preempted check

2016-10-20 Thread Pan Xinhui
From: Juergen Gross Support the vcpu_is_preempted() functionality under Xen. This will enhance lock performance on overcommitted hosts (more runnable vcpus than physical cpus in the system) as doing busy waits for preempted vcpus will hurt system performance far worse than early