IB/hfi1: Add a new VL sysfs attribute for sdma engines
This patch adds a read-only "VL" attribute for the sysfs entry of each sdma engine. It will allow the user to check VL to sdma engine mappings. Reviewed-by: NDennis Dalessandro <dennis.dalessandro@intel.com> Reviewed-by: NSebastian Sanchez <sebastian.sanchez@intel.com> Reviewed-by: NJianxin Xiong <jianxin.xiong@intel.com> Signed-off-by: NTadeusz Struk <tadeusz.struk@intel.com> Signed-off-by: NDennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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