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tests/shell: Fix shellcheck issues in tests/shell/stat+shadow_stat.sh tetscase

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Running shellcheck on stat+shadow_stat.sh generates below
warning

    In tests/shell/stat+csv_summary.sh line 26:
    while read _num _event _run _pct
           ^--^ SC2034: _num appears unused. Verify use (or export if used externally).
                ^----^ SC2034: _event appears unused. Verify use (or export if used externally).
                       ^--^ SC2034: _run appears unused. Verify use (or export if used externally).
                            ^--^ SC2034: _pct appears unused. Verify use (or export if used externally).

This variable is intentionally unused since it is
needed to parse through the output. commit used "_"
as a prefix for this throw away variable. But this
stil shows warning with shellcheck v0.6. Fix this
by only using "_" instead of prefix and variable name.

Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Tested-by: Ian Rogers <irogers@google.com>
Reviewed-by: Kajol Jain <kjain@linux.ibm.com>
Cc: maddy@linux.ibm.com
Cc: disgoel@linux.vnet.ibm.com
Cc: linuxppc-dev@lists.ozlabs.org
Link: https://lore.kernel.org/r/20230907171540.36736-3-atrajeev@linux.vnet.ibm.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
This commit is contained in:
Athira Rajeev 2023-09-07 22:45:39 +05:30 committed by Namhyung Kim
parent 35de80c709
commit 55312ca752
2 changed files with 4 additions and 4 deletions
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4
tools/perf/tests/shell/stat+csv_summary.sh
View File

@ -10,7 +10,7 @@ set -e
#
perf stat -e cycles -x' ' -I1000 --interval-count 1 --summary 2>&1 | \
grep -e summary | \
while read summary _num _event _run _pct
while read summary _ _ _ _
do
if [ $summary != "summary" ]; then
exit 1
@ -23,7 +23,7 @@ done
#
perf stat -e cycles -x' ' -I1000 --interval-count 1 --summary --no-csv-summary 2>&1 | \
grep -e summary | \
while read _num _event _run _pct
while read _ _ _ _
do
exit 1
done

4
tools/perf/tests/shell/stat+shadow_stat.sh
View File

@ -16,7 +16,7 @@ test_global_aggr()
{
perf stat -a --no-big-num -e cycles,instructions sleep 1 2>&1 | \
grep -e cycles -e instructions | \
while read num evt _hash ipc rest
while read num evt _ ipc rest
do
# skip not counted events
if [ "$num" = "<not" ]; then
@ -55,7 +55,7 @@ test_no_aggr()
{
perf stat -a -A --no-big-num -e cycles,instructions sleep 1 2>&1 | \
grep ^CPU | \
while read cpu num evt _hash ipc rest
while read cpu num evt _ ipc rest
do
# skip not counted events
if [ "$num" = "<not" ]; then