X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=usertools%2Fcpu_layout.py;h=6f129b1db8db7d222bbf804af9ef1ac7de3ef820;hb=10d698200824060dbe6171c94a7b20380b624f1a;hp=0e049a69cbd8ce0f680d496d2c7ad969c53392a7;hpb=c6dab2a873f65c5a4ea9735aa24d9539426adba4;p=dpdk.git

diff --git a/usertools/cpu_layout.py b/usertools/cpu_layout.py
index 0e049a69cb..6f129b1db8 100755
--- a/usertools/cpu_layout.py
+++ b/usertools/cpu_layout.py
@@ -1,83 +1,55 @@
 #!/usr/bin/env python
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2010-2014 Intel Corporation
+# Copyright(c) 2017 Cavium, Inc. All rights reserved.
 
-#
-#   BSD LICENSE
-#
-#   Copyright(c) 2010-2014 Intel Corporation. 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 = {}
-
-fd = open("/proc/cpuinfo")
-lines = fd.readlines()
+base_path = "/sys/devices/system/cpu"
+fd = open("{}/kernel_max".format(base_path))
+max_cpus = int(fd.read())
 fd.close()
-
-core_details = []
-core_lines = {}
-for line in lines:
-    if len(line.strip()) != 0:
-        name, value = line.split(":", 1)
-        core_lines[name.strip()] = value.strip()
-    else:
-        core_details.append(core_lines)
-        core_lines = {}
-
-for core in core_details:
-    for field in ["processor", "core id", "physical id"]:
-        if field not in core:
-            print("Error getting '%s' value from /proc/cpuinfo" % field)
-            sys.exit(1)
-        core[field] = int(core[field])
-
-    if core["core id"] not in cores:
-        cores.append(core["core id"])
-    if core["physical id"] not in sockets:
-        sockets.append(core["physical id"])
-    key = (core["physical id"], core["core id"])
+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(core["processor"])
+    core_map[key].append(cpu)
 
-print("============================================================")
-print("Core and Socket Information (as reported by '/proc/cpuinfo')")
-print("============================================================\n")
+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_core_map_len = max_processor_len * 2 + len('[, ]') + len('Socket ')
+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 '))
@@ -94,5 +66,8 @@ print(output)
 for c in cores:
     output = "Core %s" % str(c).ljust(max_core_id_len)
     for s in sockets:
-        output += " " + str(core_map[(s, c)]).ljust(max_core_map_len)
+        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)