Re: [dpdk-dev] [PATCH v9 04/10] eal: implement functions for thread affinity management

diff --git a/lib/eal/windows/rte_thread.c b/lib/eal/windows/rte_thread.c
index 6ea1dc2a05..9e74a538c2 100644
--- a/lib/eal/windows/rte_thread.c
+++ b/lib/eal/windows/rte_thread.c

@@ -7,7 +7,8 @@
 #include <rte_errno.h>
 #include <rte_debug.h>
 #include <rte_thread.h>
-#include <rte_windows.h>
+
+#include "eal_windows.h"
 
 struct eal_tls_key {
 	DWORD thread_index;

@@ -77,6 +78,130 @@ rte_thread_equal(rte_thread_t t1, rte_thread_t t2)
 	return t1.opaque_id == t2.opaque_id;
 }
 
+static int
+rte_convert_cpuset_to_affinity(const rte_cpuset_t *cpuset,
+			       PGROUP_AFFINITY affinity)
+{
+	int ret = 0;
+	PGROUP_AFFINITY cpu_affinity = NULL;
+
+	memset(affinity, 0, sizeof(GROUP_AFFINITY));
+	affinity->Group = (USHORT)-1;
+
+	/* Check that all cpus of the set belong to the same processor group and
+	 * accumulate thread affinity to be applied.
+	 */
+	for (unsigned int cpu_idx = 0; cpu_idx < CPU_SETSIZE; cpu_idx++) {
+		if (!CPU_ISSET(cpu_idx, cpuset))
+			continue;
+
+		cpu_affinity = eal_get_cpu_affinity(cpu_idx);
+
+		if (affinity->Group == (USHORT)-1) {
+			affinity->Group = cpu_affinity->Group;
+		} else if (affinity->Group != cpu_affinity->Group) {
+			ret = EINVAL;
+			goto cleanup;
+		}
+
+		affinity->Mask |= cpu_affinity->Mask;
+	}
+
+	if (affinity->Mask == 0) {
+		ret = EINVAL;
+		goto cleanup;
+	}
+
+cleanup:
+	return ret;
+}