selftests/pstore: add pstore test script for pre-reboot

The pstore_tests script includes test cases which check pstore's
behavior before crash (and reboot).

The test cases are currently following.

- Check pstore backend is registered
- Check pstore console is registered
- Check /dev/pmsg0 exists
- Write unique string to /dev/pmsg0

The unique string written to /dev/pmsg includes UUID. The UUID is also
left in 'uuid' file in order to enable us to check if the pmsg keeps the
string correctly after reboot.

Example usage is following.

  # cd /path/to/selftests
  # make run_tests -C pstore (or just .pstore/pstore_tests)
  make: Entering directory '/path/to/selftests/pstore'
  === Pstore unit tests (pstore_tests) ===
  UUID=b49b02cf-b0c2-4309-be43-b08c3971e37f
  Checking pstore backend is registered ... ok
          backend=ramoops
          cmdline=console=ttyS0,115200 root=/dev/mmcblk0p2 rw rootwait mem=768M ramoops.mem_address=0x30000000 ramoops.mem_size=0x10000
  Checking pstore console is registered ... ok
  Checking /dev/pmsg0 exists ... ok
  Writing unique string to /dev/pmsg0 ... ok
  selftests: pstore_tests [PASS]
  make: Leaving directory '/path/to/selftests/pstore'

We can also see test logs later.

  # cat pstore/logs/20151001-072718_b49b02cf-b0c2-4309-be43-b08c3971e37f/pstore_tests.log
  Thu Oct  1 07:27:18 UTC 2015
  === Pstore unit tests (pstore_tests) ===
  UUID=b49b02cf-b0c2-4309-be43-b08c3971e37f
  Checking pstore backend is registered ... ok
          backend=ramoops
          cmdline=console=ttyS0,115200 root=/dev/mmcblk0p2 rw rootwait mem=768M ramoops.mem_address=0x30000000 ramoops.mem_size=0x10000
  Checking pstore console is registered ... ok
  Checking /dev/pmsg0 exists ... ok
  Writing unique string to /dev/pmsg0 ... ok

Signed-off-by: Hiraku Toyooka <hiraku.toyooka.gu@hitachi.com>
Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Anton Vorontsov <anton@enomsg.org>
Cc: Colin Cross <ccross@android.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Mark Salyzyn <salyzyn@android.com>
Cc: Seiji Aguchi <seiji.aguchi.tr@hitachi.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-api@vger.kernel.org
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
This commit is contained in:
Hiraku Toyooka 2015-10-02 20:46:39 +09:00 коммит произвёл Shuah Khan
Родитель be14484be0
Коммит cc04a46f11
4 изменённых файлов: 98 добавлений и 0 удалений

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@ -13,6 +13,7 @@ TARGETS += mount
TARGETS += mqueue
TARGETS += net
TARGETS += powerpc
TARGETS += pstore
TARGETS += ptrace
TARGETS += seccomp
TARGETS += size

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@ -0,0 +1,12 @@
# Makefile for pstore selftests.
# Expects pstore backend is registered.
all:
TEST_PROGS := pstore_tests
TEST_FILES := common_tests
include ../lib.mk
clean:
rm -rf logs/* *uuid

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@ -0,0 +1,55 @@
#!/bin/sh
# common_tests - Shell script commonly used by pstore test scripts
#
# Copyright (C) Hitachi Ltd., 2015
# Written by Hiraku Toyooka <hiraku.toyooka.gu@hitachi.com>
#
# Released under the terms of the GPL v2.
# Utilities
errexit() { # message
echo "Error: $1" 1>&2
exit 1
}
absdir() { # file_path
(cd `dirname $1`; pwd)
}
show_result() { # result_value
if [ $1 -eq 0 ]; then
prlog "ok"
else
prlog "FAIL"
rc=1
fi
}
# Parameters
TEST_STRING_PATTERN="Testing pstore: uuid="
UUID=`cat /proc/sys/kernel/random/uuid`
TOP_DIR=`absdir $0`
LOG_DIR=$TOP_DIR/logs/`date +%Y%m%d-%H%M%S`_${UUID}/
# Preparing logs
LOG_FILE=$LOG_DIR/`basename $0`.log
mkdir -p $LOG_DIR || errexit "Failed to make a log directory: $LOG_DIR"
date > $LOG_FILE
prlog() { # messages
/bin/echo "$@" | tee -a $LOG_FILE
}
# Starting tests
rc=0
prlog "=== Pstore unit tests (`basename $0`) ==="
prlog "UUID="$UUID
prlog -n "Checking pstore backend is registered ... "
backend=`cat /sys/module/pstore/parameters/backend`
show_result $?
prlog -e "\tbackend=${backend}"
prlog -e "\tcmdline=`cat /proc/cmdline`"
if [ $rc -ne 0 ]; then
exit 1
fi

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@ -0,0 +1,30 @@
#!/bin/sh
# pstore_tests - Check pstore's behavior before crash/reboot
#
# Copyright (C) Hitachi Ltd., 2015
# Written by Hiraku Toyooka <hiraku.toyooka.gu@hitachi.com>
#
# Released under the terms of the GPL v2.
. ./common_tests
prlog -n "Checking pstore console is registered ... "
dmesg | grep -q "console \[pstore"
show_result $?
prlog -n "Checking /dev/pmsg0 exists ... "
test -e /dev/pmsg0
show_result $?
prlog -n "Writing unique string to /dev/pmsg0 ... "
if [ -e "/dev/pmsg0" ]; then
echo "${TEST_STRING_PATTERN}""$UUID" > /dev/pmsg0
show_result $?
echo "$UUID" > $TOP_DIR/uuid
else
prlog "FAIL"
rc=1
fi
exit $rc