From 1f656ff3fdddc2f59649cc84b633b799908f1f7b Mon Sep 17 00:00:00 2001 From: "K. Y. Srinivasan" Date: Sat, 30 May 2015 23:37:48 -0700 Subject: Drivers: hv: vmbus: Implement NUMA aware CPU affinity for channels Channels/sub-channels can be affinitized to VCPUs in the guest. Implement this affinity in a way that is NUMA aware. The current protocol distributed the primary channels uniformly across all available CPUs. The new protocol is NUMA aware: primary channels are distributed across the available NUMA nodes while the sub-channels within a primary channel are distributed amongst CPUs within the NUMA node assigned to the primary channel. Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- include/linux/hyperv.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/linux/hyperv.h') diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 4317cd1b69ed..30d3a1f79450 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -696,6 +696,11 @@ struct vmbus_channel { u32 target_vp; /* The corresponding CPUID in the guest */ u32 target_cpu; + /* + * State to manage the CPU affiliation of channels. + */ + struct cpumask alloced_cpus_in_node; + int numa_node; /* * Support for sub-channels. For high performance devices, * it will be useful to have multiple sub-channels to support -- cgit v1.2.3