[dpdk-dev] [PATCH] app/test: fix autotest_runner crash

Herakliusz Lipiec herakliusz.lipiec at intel.com
Wed Jun 12 15:33:23 CEST 2019


On some systems when dpdk test is executed with make test command
autotest_runner crashes in first_cpu_on_node. This happens when list
of available cpus contains something that is not a cpu as first element.
Fixed by removing all non-cpu values from list of available cpus.

Bugzilla ID: 253
Fixes: 22dcd9a4d90f ("test: parallelize unit tests")
Cc: anatoly.burakov at intel.com
Cc: stable at dpdk.org
Signed-off-by: Herakliusz Lipiec <herakliusz.lipiec at intel.com>
---
 app/test/autotest_runner.py | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/app/test/autotest_runner.py b/app/test/autotest_runner.py
index b72716e1e..7aece8905 100644
--- a/app/test/autotest_runner.py
+++ b/app/test/autotest_runner.py
@@ -43,11 +43,10 @@ def get_numa_nodes():
 # find first (or any, really) CPU on a particular node, will be used to spread
 # processes around NUMA nodes to avoid exhausting memory on particular node
 def first_cpu_on_node(node_nr):
-    cpu_path = glob.glob("/sys/devices/system/node/node%d/cpu*" % node_nr)[0]
-    cpu_name = os.path.basename(cpu_path)
-    m = re.match(r"cpu(\d+)", cpu_name)
-    return int(m.group(1))
-
+    cpu_path = glob.glob("/sys/devices/system/node/node%d/cpu*" % node_nr)
+    r = re.compile(r"cpu(\d+)")
+    cpu_name = filter(None ,map(r.match,  map(os.path.basename, cpu_path)))
+    return int(next(iter(cpu_name)).group(1))
 
 pool_child = None  # per-process child
 
-- 
2.17.2



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