545.23.06

kernel-open/nvidia-uvm/uvm_processors.c

@@ -0,0 +1,40 @@
+/*******************************************************************************
+    Copyright (c) 2023 NVIDIA Corporation
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to
+    deal in the Software without restriction, including without limitation the
+    rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+    sell copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+        The above copyright notice and this permission notice shall be
+        included in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+    THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+    DEALINGS IN THE SOFTWARE.
+
+*******************************************************************************/
+
+#include "uvm_processors.h"
+
+int uvm_find_closest_node_mask(int src, const nodemask_t *mask)
+{
+    int nid;
+    int closest_nid = NUMA_NO_NODE;
+
+    if (node_isset(src, *mask))
+        return src;
+
+    for_each_set_bit(nid, mask->bits, MAX_NUMNODES) {
+        if (closest_nid == NUMA_NO_NODE || node_distance(src, nid) < node_distance(src, closest_nid))
+            closest_nid = nid;
+    }
+
+    return closest_nid;
+}