perf tests stat+shadow_stat.sh: Fix all POSIX sh warnings found using shellcheck

Running shellcheck -S on stat+shadow_stat.sh testcase, generates
SC2046 and SC2034 warnings,

$ shellcheck -S warning tests/shell/stat+shadow_stat.sh
	res=`printf "%.2f" $(echo "scale=6; $num / $cyc" | bc -q)`
			   : Quote this to prevent word splitting

To address the POSIX shell warnings used quotes in the printf
expressions, to prevent word splitting.

Signed-off-by: Spoorthy S <[email protected]>
Cc: Disha Goel <[email protected]>
Cc: Ian Rogers <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: John Garry <[email protected]>
Cc: Madhavan Srinivasan <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Ravi Bangoria <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Athira Rajeev <[email protected]>
Signed-off-by: Kajol Jain <[email protected]>
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

1 files changed, 2 insertions, 2 deletions

diff --git a/tools/perf/tests/shell/stat+shadow_stat.sh b/tools/perf/tests/shell/stat+shadow_stat.sh
index e6e35fc6c882..0e9cba84e757 100755
--- a/tools/perf/tests/shell/stat+shadow_stat.sh
+++ b/tools/perf/tests/shell/stat+shadow_stat.sh
@@ -33,7 +33,7 @@ test_global_aggr()
 		fi
 
 		# use printf for rounding and a leading zero
-		res=`printf "%.2f" $(echo "scale=6; $num / $cyc" | bc -q)`
+		res=`printf "%.2f" "$(echo "scale=6; $num / $cyc" | bc -q)"`
 		if [ "$ipc" != "$res" ]; then
 			echo "IPC is different: $res != $ipc  ($num / $cyc)"
 			exit 1
@@ -67,7 +67,7 @@ test_no_aggr()
 		fi
 
 		# use printf for rounding and a leading zero
-		res=`printf "%.2f" $(echo "scale=6; $num / $cyc" | bc -q)`
+		res=`printf "%.2f" "$(echo "scale=6; $num / $cyc" | bc -q)"`
 		if [ "$ipc" != "$res" ]; then
 			echo "IPC is different for $cpu: $res != $ipc  ($num / $cyc)"
 			exit 1