Subject: Re: [PATCH 1/3] perf tests test_arm_coresight: Fix the shellcheck warning in latest test_arm_coresight.sh

From: James Clark <[email-masked]>
Date: Thu, 5 Oct 2023 09:19:19 +0100

On 05/10/2023 06:02, Namhyung Kim wrote:
> On Thu, Sep 28, 2023 at 9:11 PM Athira Rajeev
> <[email-masked]> wrote:
>>
>> Running shellcheck on tests/shell/test_arm_coresight.sh
>> throws below warnings:
>>
>>         In tests/shell/test_arm_coresight.sh line 15:
>>         cs_etm_path=$(find  /sys/bus/event_source/devices/cs_etm/ -name cpu* -print -quit)
>>                   ^--^ SC2061: Quote the parameter to -name so the shell won't interpret it.
>>
>>         In tests/shell/test_arm_coresight.sh line 20:
>>                 if [ $archhver -eq 5 -a "$(printf "0x%X\n" $archpart)" = "0xA13" ] ; then
>>                                      ^-- SC2166: Prefer [ p ] && [ q ] as [ p -a q ] is not well defined
>>
>> This warning is observed after commit:
>> "commit bb350847965d ("perf test: Update cs_etm testcase for Arm ETE")"
>>
>> Fixed this issue by using quoting 'cpu*' for SC2061 and
>> using "&&" in line number 20 for SC2166 warning
>>
>> Fixes: bb350847965d ("perf test: Update cs_etm testcase for Arm ETE")
>> Signed-off-by: Athira Rajeev <[email-masked]>
> 
> You'd better add Coresight folks on this.
> Maybe this file was missing in the MAINTAINERS file.
> 
> Thanks,
> Namhyung
> 

get_maintainer already does a pretty good job with the defaults, but
maybe I can try to add all the Coresight Perf stuff in the maintainers file.

> 
>> ---
>>  tools/perf/tests/shell/test_arm_coresight.sh | 4 ++--
>>  1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/tools/perf/tests/shell/test_arm_coresight.sh b/tools/perf/tests/shell/test_arm_coresight.sh
>> index fe78c4626e45..f2115dfa24a5 100755
>> --- a/tools/perf/tests/shell/test_arm_coresight.sh
>> +++ b/tools/perf/tests/shell/test_arm_coresight.sh
>> @@ -12,12 +12,12 @@
>>  glb_err=0
>>
>>  cs_etm_dev_name() {
>> -       cs_etm_path=$(find  /sys/bus/event_source/devices/cs_etm/ -name cpu* -print -quit)
>> +       cs_etm_path=$(find  /sys/bus/event_source/devices/cs_etm/ -name 'cpu*' -print -quit)
>>         trcdevarch=$(cat ${cs_etm_path}/mgmt/trcdevarch)
>>         archhver=$((($trcdevarch >> 12) & 0xf))
>>         archpart=$(($trcdevarch & 0xfff))
>>
>> -       if [ $archhver -eq 5 -a "$(printf "0x%X\n" $archpart)" = "0xA13" ] ; then
>> +       if [ $archhver -eq 5 ] && [ "$(printf "0x%X\n" $archpart)" = "0xA13" ] ; then
>>                 echo "ete"
>>         else
>>                 echo "etm"
>> --
>> 2.31.1
>>