1 files changed, 103 insertions, 0 deletions
diff --git a/src/seastar/dpdk/usertools/cpu_layout.py b/src/seastar/dpdk/usertools/cpu_layout.py
new file mode 100755
index 00000000..93949449
--- /dev/null
+++ b/src/seastar/dpdk/usertools/cpu_layout.py
@@ -0,0 +1,103 @@
+#!/usr/bin/env python
+
+#
+#   BSD LICENSE
+#
+#   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+#   Copyright(c) 2017 Cavium Networks Ltd. All rights reserved.
+#   All rights reserved.
+#
+#   Redistribution and use in source and binary forms, with or without
+#   modification, are permitted provided that the following conditions
+#   are met:
+#
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above copyright
+#       notice, this list of conditions and the following disclaimer in
+#       the documentation and/or other materials provided with the
+#       distribution.
+#     * Neither the name of Intel Corporation nor the names of its
+#       contributors may be used to endorse or promote products derived
+#       from this software without specific prior written permission.
+#
+#   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+#   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+#   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+#   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+#   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+#   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+#   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+#   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+#   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+#   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+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)