tree 03ea0aba6f0509bf7c501dee9ae6e931634f3c4b
parent e4d8270e604c3202131bac607969605ac397b893
author K. Y. Srinivasan <kys@microsoft.com> 1397007953 -0700
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1399159466 -0400

Drivers: hv: Eliminate the channel spinlock in the callback path

By ensuring that we set the callback handler to NULL in the channel close
path on the same CPU that the channel is bound to, we can eliminate this lock
acquisition and release in a performance critical path.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>