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authorDaniel Latypov <dlatypov@google.com>2020-10-29 15:09:29 -0700
committerShuah Khan <skhan@linuxfoundation.org>2020-11-10 13:43:22 -0700
commit390881448b1ff1e9d82896abbbda7cdb8e0be27c (patch)
tree2bf1c64cf8f22fa4e6d796ec7bd2394a75dd5205 /tools/testing/kunit
parent873ddeb881e055fb0c4e371cc3a006bfd9388f00 (diff)
kunit: tool: print out stderr from make (like build warnings)
Currently the tool redirects make stdout + stderr, and only shows them if the make command fails. This means build warnings aren't shown to the user. This change prints the contents of stderr even if make succeeds, under the assumption these are only build warnings or other messages the user likely wants to see. We drop stdout from the raised exception since we can no longer easily collate stdout and stderr and just showing the stderr seems fine. Example with a warning: [14:56:35] Building KUnit Kernel ... ../lib/kunit/kunit-test.c: In function ‘kunit_test_successful_try’: ../lib/kunit/kunit-test.c:19:6: warning: unused variable ‘unused’ [-Wunused-variable] 19 | int unused; | ^~~~~~ [14:56:40] Starting KUnit Kernel ... Note the stderr has a trailing \n, and since we use print, we add another, but it helps separate make and kunit.py output. Example with a build error: [15:02:45] Building KUnit Kernel ... ERROR:root:../lib/kunit/kunit-test.c: In function ‘kunit_test_successful_try’: ../lib/kunit/kunit-test.c:19:2: error: unknown type name ‘invalid_type’ 19 | invalid_type *test = data; | ^~~~~~~~~~~~ ... Signed-off-by: Daniel Latypov <dlatypov@google.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Diffstat (limited to 'tools/testing/kunit')
-rw-r--r--tools/testing/kunit/kunit_kernel.py13
1 files changed, 9 insertions, 4 deletions
diff --git a/tools/testing/kunit/kunit_kernel.py b/tools/testing/kunit/kunit_kernel.py
index b4768fa03ce0..2e3cc0fac726 100644
--- a/tools/testing/kunit/kunit_kernel.py
+++ b/tools/testing/kunit/kunit_kernel.py
@@ -84,11 +84,16 @@ class LinuxSourceTreeOperations(object):
if build_dir:
command += ['O=' + build_dir]
try:
- subprocess.check_output(command, stderr=subprocess.STDOUT)
+ proc = subprocess.Popen(command,
+ stderr=subprocess.PIPE,
+ stdout=subprocess.DEVNULL)
except OSError as e:
- raise BuildError('Could not call execute make: ' + str(e))
- except subprocess.CalledProcessError as e:
- raise BuildError(e.output.decode())
+ raise BuildError('Could not call make command: ' + str(e))
+ _, stderr = proc.communicate()
+ if proc.returncode != 0:
+ raise BuildError(stderr.decode())
+ if stderr: # likely only due to build warnings
+ print(stderr.decode())
def linux_bin(self, params, timeout, build_dir):
"""Runs the Linux UML binary. Must be named 'linux'."""