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Date: Mon, 26 Jun 2017 17:06:44 +0800
From: Po-Hsu Lin <po-hsu.lin@...onical.com>
To: shuah@...nel.org
Cc: linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] selftests: fix memory-hotplug test
Hello Shuah,
thanks for the feedback, I will send v2 for these.
Cheers
On Sat, Jun 24, 2017 at 12:03 AM, Shuah Khan <shuah@...nel.org> wrote:
> Hi Po-Hsu Lin,
>
> On 06/18/2017 09:04 PM, Po-Hsu Lin wrote:
>
> Please split the typo correction and fixes. Please send a patch
> for each individual fix. I am seeing several fixes bundled in this
> one single patch.
>
>> Typo correction for hotpluggable_offline_memory() function> Check for hot-pluggable memory availability in prerequisite().
>> Check for precentage range for -r flag>
>> Fix the memory offline test, the $ratio was used with RANDOM as the
>> possibility to get it offlined, correct it to become the portion of
>> available removable memory blocks.
>> Also ask the tool to try to offline the next available memory block
>> if the attempt is unsuccessful. It will only fail if all removable
>> memory blocks are busy.
>>
>> An nice example:
>> PHLin@...itude:~$ sudo ./test.sh
>
> Remove the user info from this output. Same comment for the rest if
> this output.
>
>> Test scope: 10% hotplug memory
>> online all hot-pluggable memory in offline state:
>> SKIPPED - no hot-pluggable memory in offline state
>> offline 10% hot-pluggable memory in online state
>> trying to offline 3 out of 28 memory block(s):
>> online->offline memory1
>> online->offline memory10
>> ./test.sh: line 74: echo: write error: Resource temporarily unavailable
>> offline_memory_expect_success 10: unexpected fail
>> online->offline memory100
>> online->offline memory101
>> online all hot-pluggable memory in offline state:
>> offline->online memory1
>> offline->online memory100
>> offline->online memory101
>> skip extra tests: debugfs is not mounted
>> PHLin@...itude:~$ echo $?
>> 0
>>
>> Signed-off-by: Po-Hsu Lin <po-hsu.lin@...onical.com>
>
> thanks,
> -- Shuah
>
>> ---
>> .../selftests/memory-hotplug/mem-on-off-test.sh | 86 +++++++++++++++-----
>> 1 file changed, 67 insertions(+), 19 deletions(-)
>>
>> diff --git a/tools/testing/selftests/memory-hotplug/mem-on-off-test.sh b/tools/testing/selftests/memory-hotplug/mem-on-off-test.sh
>> index 6cddde0..f1603e6 100755
>> --- a/tools/testing/selftests/memory-hotplug/mem-on-off-test.sh
>> +++ b/tools/testing/selftests/memory-hotplug/mem-on-off-test.sh
>> @@ -22,6 +22,11 @@ prerequisite()
>> echo $msg memory hotplug is not supported >&2
>> exit 0
>> fi
>> +
>> + if ! grep -q 1 $SYSFS/devices/system/memory/memory*/removable; then
>> + echo $msg no hot-pluggable memory >&2
>> + exit 0
>> + fi
>> }
>>
>> #
>> @@ -39,7 +44,7 @@ hotpluggable_memory()
>> done
>> }
>>
>> -hotplaggable_offline_memory()
>> +hotpluggable_offline_memory()
>> {
>> hotpluggable_memory offline
>> }
>> @@ -75,9 +80,12 @@ online_memory_expect_success()
>>
>> if ! online_memory $memory; then
>> echo $FUNCNAME $memory: unexpected fail >&2
>> + return 1
>> elif ! memory_is_online $memory; then
>> echo $FUNCNAME $memory: unexpected offline >&2
>> + return 1
>> fi
>> + return 0
>> }
>>
>> online_memory_expect_fail()
>> @@ -86,9 +94,12 @@ online_memory_expect_fail()
>>
>> if online_memory $memory 2> /dev/null; then
>> echo $FUNCNAME $memory: unexpected success >&2
>> + return 1
>> elif ! memory_is_offline $memory; then
>> echo $FUNCNAME $memory: unexpected online >&2
>> + return 1
>> fi
>> + return 0
>> }
>>
>> offline_memory_expect_success()
>> @@ -97,9 +108,12 @@ offline_memory_expect_success()
>>
>> if ! offline_memory $memory; then
>> echo $FUNCNAME $memory: unexpected fail >&2
>> + return 1
>> elif ! memory_is_offline $memory; then
>> echo $FUNCNAME $memory: unexpected offline >&2
>> + return 1
>> fi
>> + return 0
>> }
>>
>> offline_memory_expect_fail()
>> @@ -108,14 +122,18 @@ offline_memory_expect_fail()
>>
>> if offline_memory $memory 2> /dev/null; then
>> echo $FUNCNAME $memory: unexpected success >&2
>> + return 1
>> elif ! memory_is_online $memory; then
>> echo $FUNCNAME $memory: unexpected offline >&2
>> + return 1
>> fi
>> + return 0
>> }
>>
>> error=-12
>> priority=0
>> ratio=10
>> +retval=0
>>
>> while getopts e:hp:r: opt; do
>> case $opt in
>> @@ -131,6 +149,10 @@ while getopts e:hp:r: opt; do
>> ;;
>> r)
>> ratio=$OPTARG
>> + if [ "$ratio" -gt 100 ] || [ "$ratio" -lt 0 ]; then
>> + echo "The percentage should be an integer within 0~100 range"
>> + exit
>> + fi
>> ;;
>> esac
>> done
>> @@ -143,35 +165,58 @@ fi
>> prerequisite
>>
>> echo "Test scope: $ratio% hotplug memory"
>> -echo -e "\t online all hotplug memory in offline state"
>> -echo -e "\t offline $ratio% hotplug memory in online state"
>> -echo -e "\t online all hotplug memory in offline state"
>>
>> #
>> # Online all hot-pluggable memory
>> #
>> -for memory in `hotplaggable_offline_memory`; do
>> - echo offline-online $memory
>> - online_memory_expect_success $memory
>> -done
>> +hotpluggable_num=`hotpluggable_offline_memory | wc -l`
>> +echo -e "\t online all hot-pluggable memory in offline state:"
>> +if [ "$hotpluggable_num" -gt 0 ]; then
>> + for memory in `hotpluggable_offline_memory`; do
>> + echo "offline->online memory$memory"
>> + if ! online_memory_expect_success $memory; then
>> + retval=1
>> + fi
>> + done
>> +else
>> + echo -e "\t\t SKIPPED - no hot-pluggable memory in offline state"
>> +fi
>>
>> #
>> # Offline $ratio percent of hot-pluggable memory
>> #
>> +hotpluggable_num=`hotpluggable_online_memory | wc -l`
>> +target=`echo "a=$hotpluggable_num*$ratio; if ( a%100 ) a/100+1 else a/100" | bc`
>> +echo -e "\t offline $ratio% hot-pluggable memory in online state"
>> +echo -e "\t trying to offline $target out of $hotpluggable_num memory block(s):"
>> for memory in `hotpluggable_online_memory`; do
>> - if [ $((RANDOM % 100)) -lt $ratio ]; then
>> - echo online-offline $memory
>> - offline_memory_expect_success $memory
>> + if [ "$target" -gt 0 ]; then
>> + echo "online->offline memory$memory"
>> + if offline_memory_expect_success $memory; then
>> + target=$(($target - 1))
>> + fi
>> fi
>> done
>> +if [ "$target" -gt 0 ]; then
>> + retval=1
>> + echo -e "\t\t FAILED - unable to offline some memory blocks, device busy?"
>> +fi
>>
>> #
>> # Online all hot-pluggable memory again
>> #
>> -for memory in `hotplaggable_offline_memory`; do
>> - echo offline-online $memory
>> - online_memory_expect_success $memory
>> -done
>> +hotpluggable_num=`hotpluggable_offline_memory | wc -l`
>> +echo -e "\t online all hot-pluggable memory in offline state:"
>> +if [ "$hotpluggable_num" -gt 0 ]; then
>> + for memory in `hotpluggable_offline_memory`; do
>> + echo "offline->online memory$memory"
>> + if ! online_memory_expect_success $memory; then
>> + retval=1
>> + fi
>> + done
>> +else
>> + echo -e "\t\t SKIPPED - no hot-pluggable memory in offline state"
>> +fi
>>
>> #
>> # Test with memory notifier error injection
>> @@ -189,15 +234,16 @@ prerequisite_extra()
>>
>> if [ ! -d "$DEBUGFS" ]; then
>> echo $msg debugfs is not mounted >&2
>> - exit 0
>> + exit $((0+$retval))
>> fi
>>
>> if [ ! -d $NOTIFIER_ERR_INJECT_DIR ]; then
>> echo $msg memory-notifier-error-inject module is not available >&2
>> - exit 0
>> + exit $((0+$retval))
>> fi
>> }
>>
>> +echo -e "\t Test with memory notifier error injection"
>> prerequisite_extra
>>
>> #
>> @@ -214,7 +260,7 @@ done
>> # Test memory hot-add error handling (offline => online)
>> #
>> echo $error > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_ONLINE/error
>> -for memory in `hotplaggable_offline_memory`; do
>> +for memory in `hotpluggable_offline_memory`; do
>> online_memory_expect_fail $memory
>> done
>>
>> @@ -222,7 +268,7 @@ done
>> # Online all hot-pluggable memory
>> #
>> echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_ONLINE/error
>> -for memory in `hotplaggable_offline_memory`; do
>> +for memory in `hotpluggable_offline_memory`; do
>> online_memory_expect_success $memory
>> done
>>
>> @@ -236,3 +282,5 @@ done
>>
>> echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_OFFLINE/error
>> /sbin/modprobe -q -r memory-notifier-error-inject
>> +
>> +exit $retval
>>
>
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