linux-kernel - [PATCH 3/3] tools/testing: adjust pstore backend related selftest

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Message-Id: <20240207021921.206425-4-xiangzao@linux.alibaba.com>
Date: Wed,  7 Feb 2024 10:19:21 +0800
From: Yuanhe Shu <xiangzao@...ux.alibaba.com>
To: keescook@...omium.org,
	tony.luck@...el.com,
	gpiccoli@...lia.com,
	shuah@...nel.org,
	corbet@....net
Cc: xlpang@...ux.alibaba.com,
	linux-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org,
	linux-hardening@...r.kernel.org,
	linux-kselftest@...r.kernel.org,
	Yuanhe Shu <xiangzao@...ux.alibaba.com>
Subject: [PATCH 3/3] tools/testing: adjust pstore backend related selftest

Pstore now supports multiple backends, the module parameter
pstore.backend varies from 'registered backend' to 'backends that are
allowed to register'. Adjust selftests to match the change.

Signed-off-by: Yuanhe Shu <xiangzao@...ux.alibaba.com>
---
 tools/testing/selftests/pstore/common_tests   |  8 +--
 .../selftests/pstore/pstore_post_reboot_tests | 65 ++++++++++---------
 tools/testing/selftests/pstore/pstore_tests   |  2 +-
 3 files changed, 38 insertions(+), 37 deletions(-)

diff --git a/tools/testing/selftests/pstore/common_tests b/tools/testing/selftests/pstore/common_tests
index 4509f0cc9c91..497e6fc3215f 100755
--- a/tools/testing/selftests/pstore/common_tests
+++ b/tools/testing/selftests/pstore/common_tests
@@ -27,9 +27,9 @@ show_result() { # result_value
 }
 
 check_files_exist() { # type of pstorefs file
-    if [ -e ${1}-${backend}-0 ]; then
+    if [ -e ${1}-${2}-0 ]; then
 	prlog "ok"
-	for f in `ls ${1}-${backend}-*`; do
+	for f in `ls ${1}-${2}-*`; do
             prlog -e "\t${f}"
 	done
     else
@@ -74,9 +74,9 @@ prlog "=== Pstore unit tests (`basename $0`) ==="
 prlog "UUID="$UUID
 
 prlog -n "Checking pstore backend is registered ... "
-backend=`cat /sys/module/pstore/parameters/backend`
+backends=$(dmesg | sed -n 's/.*pstore: Registered \(.*\) as persistent store backend.*/\1/p')
 show_result $?
-prlog -e "\tbackend=${backend}"
+prlog -e "\tbackends="$backends
 prlog -e "\tcmdline=`cat /proc/cmdline`"
 if [ $rc -ne 0 ]; then
     exit 1
diff --git a/tools/testing/selftests/pstore/pstore_post_reboot_tests b/tools/testing/selftests/pstore/pstore_post_reboot_tests
index d6da5e86efbf..9e40ccb9c918 100755
--- a/tools/testing/selftests/pstore/pstore_post_reboot_tests
+++ b/tools/testing/selftests/pstore/pstore_post_reboot_tests
@@ -36,45 +36,46 @@ else
 fi
 
 cd ${mount_point}
+for backend in ${backends}; do
+    prlog -n "Checking ${backend}-dmesg files exist in pstore filesystem ... "
+    check_files_exist dmesg ${backend}
 
-prlog -n "Checking dmesg files exist in pstore filesystem ... "
-check_files_exist dmesg
+    prlog -n "Checking ${backend}-console files exist in pstore filesystem ... "
+    check_files_exist console ${backend}
 
-prlog -n "Checking console files exist in pstore filesystem ... "
-check_files_exist console
+    prlog -n "Checking ${backend}-pmsg files exist in pstore filesystem ... "
+    check_files_exist pmsg ${backend}
 
-prlog -n "Checking pmsg files exist in pstore filesystem ... "
-check_files_exist pmsg
+    prlog -n "Checking ${backend}-dmesg files contain oops end marker"
+    grep_end_trace() {
+        grep -q "\---\[ end trace" $1
+    }
+    files=`ls dmesg-${backend}-*`
+    operate_files $? "$files" grep_end_trace
 
-prlog -n "Checking dmesg files contain oops end marker"
-grep_end_trace() {
-    grep -q "\---\[ end trace" $1
-}
-files=`ls dmesg-${backend}-*`
-operate_files $? "$files" grep_end_trace
+    prlog -n "Checking ${backend}-console file contains oops end marker ... "
+    grep -q "\---\[ end trace" console-${backend}-0
+    show_result $?
 
-prlog -n "Checking console file contains oops end marker ... "
-grep -q "\---\[ end trace" console-${backend}-0
-show_result $?
-
-prlog -n "Checking pmsg file properly keeps the content written before crash ... "
-prev_uuid=`cat $TOP_DIR/prev_uuid`
-if [ $? -eq 0 ]; then
-    nr_matched=`grep -c "$TEST_STRING_PATTERN" pmsg-${backend}-0`
-    if [ $nr_matched -eq 1 ]; then
-	grep -q "$TEST_STRING_PATTERN"$prev_uuid pmsg-${backend}-0
-	show_result $?
+    prlog -n "Checking ${backend}-pmsg file properly keeps the content written before crash ... "
+    prev_uuid=`cat $TOP_DIR/prev_uuid`
+    if [ $? -eq 0 ]; then
+        nr_matched=`grep -c "$TEST_STRING_PATTERN" pmsg-${backend}-0`
+        if [ $nr_matched -eq 1 ]; then
+	    grep -q "$TEST_STRING_PATTERN"$prev_uuid pmsg-${backend}-0
+	    show_result $?
+        else
+            prlog "FAIL"
+            rc=1
+        fi
     else
-	prlog "FAIL"
-	rc=1
+        prlog "FAIL"
+        rc=1
     fi
-else
-    prlog "FAIL"
-    rc=1
-fi
 
-prlog -n "Removing all files in pstore filesystem "
-files=`ls *-${backend}-*`
-operate_files $? "$files" rm
+    prlog -n "Removing all ${backend} files in pstore filesystem "
+    files=`ls *-${backend}-*`
+    operate_files $? "$files" rm
+done
 
 exit $rc
diff --git a/tools/testing/selftests/pstore/pstore_tests b/tools/testing/selftests/pstore/pstore_tests
index 2aa9a3852a84..f4665a8c77dc 100755
--- a/tools/testing/selftests/pstore/pstore_tests
+++ b/tools/testing/selftests/pstore/pstore_tests
@@ -10,7 +10,7 @@
 . ./common_tests
 
 prlog -n "Checking pstore console is registered ... "
-dmesg | grep -Eq "console \[(pstore|${backend})"
+dmesg | grep -Eq "console \[(pstore console)"
 show_result $?
 
 prlog -n "Checking /dev/pmsg0 exists ... "
-- 
2.39.3