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kselftest/cgroup: Fix gathering number of CPUs

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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>
Reviewed-by: Kamalesh Babulal <kamalesh.babulal@oracle.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Breno Leitao
2022-11-13 11:44:49 +00:00
committed by Tejun Heo
parent 79a7f41f7f
commit 35b7fa4ed1
1 changed files with 1 additions and 1 deletions
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2
tools/testing/selftests/cgroup/test_cpuset_prs.sh
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@@ -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