linux-kernel - [PATCH] kunit: tool: fix --raw_output to actually show output

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Date:   Thu, 29 Oct 2020 23:16:55 -0700
From:   Daniel Latypov <dlatypov@...gle.com>
To:     brendanhiggins@...gle.com
Cc:     davidgow@...gle.com, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org, skhan@...uxfoundation.org,
        Daniel Latypov <dlatypov@...gle.com>
Subject: [PATCH] kunit: tool: fix --raw_output to actually show output

Currently --raw_output means nothing gets shown.
Why?
Because `raw_output()` has a `yield` and therefore is a generator, which
means it only executes when you ask it for a value.

Given no one actually is using it as a generator (checked via the added
type annotation), drop the yield so we actually print the output.

Also strip off the trailing \n (and any other whitespace) to avoid
  [<601d6d3a>] ? printk+0x0/0x9b

  [<601e5058>] ? kernel_init+0x23/0x14b

  [<600170d2>] ? new_thread_handler+0x82/0xc0
making the output unreadable.

Signed-off-by: Daniel Latypov <dlatypov@...gle.com>
---
 tools/testing/kunit/kunit_parser.py | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/tools/testing/kunit/kunit_parser.py b/tools/testing/kunit/kunit_parser.py
index 8019e3dd4c32..c44bb7c27ce6 100644
--- a/tools/testing/kunit/kunit_parser.py
+++ b/tools/testing/kunit/kunit_parser.py
@@ -63,10 +63,9 @@ def isolate_kunit_output(kernel_output):
 		elif started:
 			yield line[prefix_len:] if prefix_len > 0 else line
 
-def raw_output(kernel_output):
+def raw_output(kernel_output) -> None:
 	for line in kernel_output:
-		print(line)
-		yield line
+		print(line.rstrip())
 
 DIVIDER = '=' * 60
 

base-commit: 07e0887302450a62f51dba72df6afb5fabb23d1c
-- 
2.29.1.341.ge80a0c044ae-goog