The dmesg utility already comes with a command line switch to omit
kernel timestamps, let's use it instead of applying an extra regex to
filter them out.
Now without the '[timestamp]: ' prefix at the beginning of the log
entry, revise the filtering regex to search for the 'livepatch:'
subsystem prefix at the beginning of the line.
Signed-off-by: Joe Lawrence <joe.lawrence@xxxxxxxxxx>
Reviewed-by: Petr Mladek <pmladek@xxxxxxxx>
---
tools/testing/selftests/livepatch/README | 8 ++++----
tools/testing/selftests/livepatch/functions.sh | 7 +++----
2 files changed, 7 insertions(+), 8 deletions(-)
diff --git a/tools/testing/selftests/livepatch/README b/tools/testing/selftests/livepatch/README
index 0942dd5826f8..79dafab03017 100644
--- a/tools/testing/selftests/livepatch/README
+++ b/tools/testing/selftests/livepatch/README
@@ -37,7 +37,7 @@ Adding tests
See the common functions.sh file for the existing collection of utility
functions, most importantly setup_config(), start_test() and
check_result(). The latter function greps the kernel's ring buffer for
-"livepatch:" and "test_klp" strings, so tests be sure to include one of
-those strings for result comparison. Other utility functions include
-general module loading and livepatch loading helpers (waiting for patch
-transitions, sysfs entries, etc.)
+the "^livepatch:" subsystem prefix and also any "test_klp" strings.
+Test log entries need include one of those for result comparison. Other
+utility functions include general module loading and livepatch loading
+helpers (waiting for patch transitions, sysfs entries, etc.)
diff --git a/tools/testing/selftests/livepatch/functions.sh b/tools/testing/selftests/livepatch/functions.sh
index 7ac3aa20f403..bbbb4041f533 100644
--- a/tools/testing/selftests/livepatch/functions.sh
+++ b/tools/testing/selftests/livepatch/functions.sh
@@ -44,7 +44,7 @@ function die() {
# save existing dmesg so we can detect new content
function save_dmesg() {
SAVED_DMESG=$(mktemp --tmpdir -t klp-dmesg-XXXXXX)
- dmesg > "$SAVED_DMESG"
+ dmesg --notime > "$SAVED_DMESG"
}
# cleanup temporary dmesg file from save_dmesg()
@@ -272,9 +272,8 @@ function check_result {
local expect="$*"
local result
- result=$(dmesg | diff --changed-group-format='%>' --unchanged-group-format='' "$SAVED_DMESG" - | \
- grep -v 'tainting' | grep -e 'livepatch:' -e 'test_klp' | \
- sed 's/^\[[ 0-9.]*\] //')
+ result=$(dmesg --notime | diff --changed-group-format='%>' --unchanged-group-format='' "$SAVED_DMESG" - | \
+ grep -v 'tainting' | grep -e '^livepatch:' -e 'test_klp')
if [[ "$expect" == "$result" ]] ; then
echo "ok"
--
2.21.3
