OrgACRN
/
acrn-kernel
mirror of https://github.com/projectacrn/acrn-kernel.git
1
0
Fork 0
Code Issues Releases Wiki Activity

Drivers: hv: Compare cpumasks and not their weights in init_vp_index() 

The condition is supposed to check whether 'allocated_mask' got fully
exhausted, i.e. there's no free CPU on the NUMA node left so we have
to use one of the already used CPUs. As only bits which correspond
to CPUs from 'cpumask_of_node(numa_node)' get set in 'allocated_mask',
checking for the equal weights is technically correct but not obvious.
Let's compare cpumasks directly.

No functional change intended.

Suggested-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20220128103412.3033736-3-vkuznets@redhat.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
This commit is contained in:
Vitaly Kuznetsov 2022-01-28 11:34:12 +01:00 committed by Wei Liu
parent de96e8a098
commit 4ee5245871
1 changed files with 1 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/hv/channel_mgmt.c
View File

@ -762,8 +762,7 @@ static void init_vp_index(struct vmbus_channel *channel)
}
allocated_mask = &hv_context.hv_numa_map[numa_node];
if (cpumask_weight(allocated_mask) ==
cpumask_weight(cpumask_of_node(numa_node))) {
if (cpumask_equal(allocated_mask, cpumask_of_node(numa_node))) {
/*
* We have cycled through all the CPUs in the node;
* reset the allocated map.