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Subject[PATCH] kselftest/cgroup: Fix gathering number of CPUs
Date
test_cpuset_prs.sh is failing with the following error:

test_cpuset_prs.sh: line 29: [[: 8
57%: syntax error in expression (error token is "57%")

This is happening because `lscpu | grep "^CPU(s)"` returns two lines in
some systems (such as Debian unstable):

# lscpu | grep "^CPU(s)"
CPU(s): 8
CPU(s) scaling MHz: 55%

This is a simple fix that discard the second line.

Signed-off-by: Breno Leitao <leitao@debian.org>
---
tools/testing/selftests/cgroup/test_cpuset_prs.sh | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/cgroup/test_cpuset_prs.sh b/tools/testing/selftests/cgroup/test_cpuset_prs.sh
index 526d2c42d870..564ca8c33035 100755
--- a/tools/testing/selftests/cgroup/test_cpuset_prs.sh
+++ b/tools/testing/selftests/cgroup/test_cpuset_prs.sh
@@ -25,7 +25,7 @@ WAIT_INOTIFY=$(cd $(dirname $0); pwd)/wait_inotify
CGROUP2=$(mount -t cgroup2 | head -1 | awk -e '{print $3}')
[[ -n "$CGROUP2" ]] || skip_test "Cgroup v2 mount point not found!"

-CPUS=$(lscpu | grep "^CPU(s)" | sed -e "s/.*:[[:space:]]*//")
+CPUS=$(lscpu | grep "^CPU(s):" | sed -e "s/.*:[[:space:]]*//")
[[ $CPUS -lt 8 ]] && skip_test "Test needs at least 8 cpus available!"

# Set verbose flag and delay factor
--
2.38.1
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