vsp-lib: Capture the kernel log messages in test log files

It can be useful to capture kernel log messages in test log files for
diagnostic purpose. Add a simple mechanism to do so by capturing the
full kernel log at the end of the test. The kernel log is cleared first
before starting the test to avoid capturing unrelated messages.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
Changes since v1:

- Don't clear the kernel log

1 files changed, 6 insertions, 0 deletions

diff --git a/scripts/vsp-lib.sh b/scripts/vsp-lib.sh
index 0f3992a..0ecdf9a 100755
--- a/scripts/vsp-lib.sh
+++ b/scripts/vsp-lib.sh
@@ -1080,12 +1080,18 @@ test_init() {
 test_start() {
 	echo "Testing $1" | ./logger.sh >> $logfile
 	echo -n "Testing $1: " >&2
+
+	# Store the marker for the last line of the kernel log.
+	marker=$(dmesg | tail -n 1 | sed 's/^\[\([^]]*\)\].*/\1/g')
 }
 
 test_complete() {
 	echo "Done: $1" | ./logger.sh >> $logfile
 	echo $1 >&2
 
+	# Capture the part of the kernel log relative to the test.
+	dmesg | sed "1,/$marker/d" | ./logger.sh kernel >> $logfile
+
 	rm -f ${frames_dir}frame-*.bin
 	rm -f ${frames_dir}histo-*.bin
 	rm -f ${frames_dir}rpf.*.bin