1 files changed, 73 insertions, 0 deletions
diff --git a/src/spdk/dpdk/usertools/cpu_layout.py b/src/spdk/dpdk/usertools/cpu_layout.py
new file mode 100755
index 00000000..6f129b1d
--- /dev/null
+++ b/src/spdk/dpdk/usertools/cpu_layout.py
@@ -0,0 +1,73 @@
+#!/usr/bin/env python
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2010-2014 Intel Corporation
+# Copyright(c) 2017 Cavium, Inc. All rights reserved.
+
+from __future__ import print_function
+import sys
+try:
+    xrange # Python 2
+except NameError:
+    xrange = range # Python 3
+
+sockets = []
+cores = []
+core_map = {}
+base_path = "/sys/devices/system/cpu"
+fd = open("{}/kernel_max".format(base_path))
+max_cpus = int(fd.read())
+fd.close()
+for cpu in xrange(max_cpus + 1):
+    try:
+        fd = open("{}/cpu{}/topology/core_id".format(base_path, cpu))
+    except IOError:
+        continue
+    except:
+        break
+    core = int(fd.read())
+    fd.close()
+    fd = open("{}/cpu{}/topology/physical_package_id".format(base_path, cpu))
+    socket = int(fd.read())
+    fd.close()
+    if core not in cores:
+        cores.append(core)
+    if socket not in sockets:
+        sockets.append(socket)
+    key = (socket, core)
+    if key not in core_map:
+        core_map[key] = []
+    core_map[key].append(cpu)
+
+print(format("=" * (47 + len(base_path))))
+print("Core and Socket Information (as reported by '{}')".format(base_path))
+print("{}\n".format("=" * (47 + len(base_path))))
+print("cores = ", cores)
+print("sockets = ", sockets)
+print("")
+
+max_processor_len = len(str(len(cores) * len(sockets) * 2 - 1))
+max_thread_count = len(list(core_map.values())[0])
+max_core_map_len = (max_processor_len * max_thread_count)  \
+                      + len(", ") * (max_thread_count - 1) \
+                      + len('[]') + len('Socket ')
+max_core_id_len = len(str(max(cores)))
+
+output = " ".ljust(max_core_id_len + len('Core '))
+for s in sockets:
+    output += " Socket %s" % str(s).ljust(max_core_map_len - len('Socket '))
+print(output)
+
+output = " ".ljust(max_core_id_len + len('Core '))
+for s in sockets:
+    output += " --------".ljust(max_core_map_len)
+    output += " "
+print(output)
+
+for c in cores:
+    output = "Core %s" % str(c).ljust(max_core_id_len)
+    for s in sockets:
+        if (s,c) in core_map:
+            output += " " + str(core_map[(s, c)]).ljust(max_core_map_len)
+        else:
+            output += " " * (max_core_map_len + 1)
+    print(output)