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Commit cc04a46f authored by Hiraku Toyooka's avatar Hiraku Toyooka Committed by Shuah Khan
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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: default avatarHiraku 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: default avatarShuah Khan <shuahkh@osg.samsung.com>
parent be14484b

tools/testing/selftests/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -13,6 +13,7 @@ TARGETS += mount 
TARGETS += mqueue

TARGETS += net

TARGETS += powerpc

TARGETS += pstore

TARGETS += ptrace

TARGETS += seccomp

TARGETS += size

tools/testing/selftests/pstore/Makefile

0 → 100644
+12 −0
Original line number Diff line number Diff line 
# 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

tools/testing/selftests/pstore/common_tests

0 → 100755
+55 −0
Original line number Diff line number Diff line 
#!/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

tools/testing/selftests/pstore/pstore_tests

0 → 100755
+30 −0
Original line number Diff line number Diff line 
#!/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