linux-kernel - [PATCH 5.19 0977/1157] perf test: Fix test case 83 (perf stat CSV output linter) on s390

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Date:   Mon, 15 Aug 2022 20:05:33 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Thomas Richter <tmricht@...ux.ibm.com>,
        Ian Rogers <irogers@...gle.com>,
        Sumanth Korikkar <sumanthk@...ux.ibm.com>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Sven Schnelle <svens@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.19 0977/1157] perf test: Fix test case 83 (perf stat CSV output linter) on s390

From: Thomas Richter <tmricht@...ux.ibm.com>

[ Upstream commit 87abe344cd280802f431998fabfd35d2d340ca90 ]

Perf test case 83: perf stat CSV output linter might fail
on s390.
The reason for this is the output of the command

 ./perf stat -x, -A -a --no-merge true

which depends on a .config file setting. When CONFIG_SCHED_TOPOLOGY
is set, the output of above perf command is

   CPU0,1.50,msec,cpu-clock,1502781,100.00,1.052,CPUs utilized

When CONFIG_SCHED_TOPOLOGY is *NOT* set the output of above perf
command is

   0.95,msec,cpu-clock,949800,100.00,1.060,CPUs utilized

Fix the test case to accept both output formats.

Output before:
 # perf test 83
 83: perf stat CSV output linter       : FAILED!
 #

Output after:
 # ./perf test 83
 83: perf stat CSV output linter       : Ok
 #

Fixes: ec906102e5b7d339 ("perf test: Fix "perf stat CSV output linter" test on s390")
Signed-off-by: Thomas Richter <tmricht@...ux.ibm.com>
Acked-by: Ian Rogers <irogers@...gle.com>
Acked-by: Sumanth Korikkar <sumanthk@...ux.ibm.com>
Cc: Heiko Carstens <hca@...ux.ibm.com>
Cc: Sven Schnelle <svens@...ux.ibm.com>
Cc: Vasily Gorbik <gor@...ux.ibm.com>
Link: https://lore.kernel.org/r/20220720123419.220953-1-tmricht@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 tools/perf/tests/shell/stat+csv_output.sh | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/tools/perf/tests/shell/stat+csv_output.sh b/tools/perf/tests/shell/stat+csv_output.sh
index 38c26f3ef4c1..eb5196f58190 100755
--- a/tools/perf/tests/shell/stat+csv_output.sh
+++ b/tools/perf/tests/shell/stat+csv_output.sh
@@ -8,7 +8,8 @@ set -e
 
 function commachecker()
 {
-	local -i cnt=0 exp=0
+	local -i cnt=0
+	local exp=0
 
 	case "$1"
 	in "--no-args")		exp=6
@@ -17,7 +18,7 @@ function commachecker()
 	;; "--interval")	exp=7
 	;; "--per-thread")	exp=7
 	;; "--system-wide-no-aggr")	exp=7
-				[ $(uname -m) = "s390x" ] && exp=6
+				[ $(uname -m) = "s390x" ] && exp='^[6-7]$'
 	;; "--per-core")	exp=8
 	;; "--per-socket")	exp=8
 	;; "--per-node")	exp=8
@@ -34,7 +35,7 @@ function commachecker()
 		x=$(echo $line | tr -d -c ',')
 		cnt="${#x}"
 		# echo $line $cnt
-		[ "$cnt" -ne "$exp" ] && {
+		[[ ! "$cnt" =~ $exp ]] && {
 			echo "wrong number of fields. expected $exp in $line" 1>&2
 			exit 1;
 		}
-- 
2.35.1