[tip: core/rcu] tools/rcutorture: Make identify_qemu_vcpus() independent of local language

[tip-bot2 for Frederic Weisbecker]

The following commit has been merged into the core/rcu branch of tip:

Commit-ID:     106cc0d9e79aa7fcb43bd8feab97ee6e114d348b
Gitweb:        https://git.kernel.org/tip/106cc0d9e79aa7fcb43bd8feab97ee6e114d348b
Author:        Frederic Weisbecker <frederic@xxxxxxxxxx>
AuthorDate:    Thu, 19 Nov 2020 01:30:24 +01:00
Committer:     Paul E. McKenney <paulmck@xxxxxxxxxx>
CommitterDate: Mon, 04 Jan 2021 14:01:20 -08:00

tools/rcutorture: Make identify_qemu_vcpus() independent of local language

The rcutorture scripts' identify_qemu_vcpus() function expects `lscpu`
to have a "CPU: " line, for example:

	CPU(s):		8

But different local language settings can give different results:

	Processeur(s) :		8

As a result, identify_qemu_vcpus() may return an empty string, resulting
in the following warning (with the same local language settings):

	kvm-test-1-run.sh: ligne 138 : test:  : nombre entier attendu comme expression

This commit therefore changes identify_qemu_vcpus() to use getconf,
which produces local-language-independend output.

Cc: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx>
Cc: Lai Jiangshan <jiangshanlai@xxxxxxxxx>
Cc: rcu@xxxxxxxxxxxxxxx
Signed-off-by: Frederic Weisbecker <frederic@xxxxxxxxxx>
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxx>
---
 tools/testing/selftests/rcutorture/bin/functions.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/rcutorture/bin/functions.sh b/tools/testing/selftests/rcutorture/bin/functions.sh
index 8266349..fef8b4b 100644
--- a/tools/testing/selftests/rcutorture/bin/functions.sh
+++ b/tools/testing/selftests/rcutorture/bin/functions.sh
@@ -232,7 +232,7 @@ identify_qemu_args () {
 # Returns the number of virtual CPUs available to the aggregate of the
 # guest OSes.
 identify_qemu_vcpus () {
-	lscpu | grep '^CPU(s):' | sed -e 's/CPU(s)://' -e 's/[ 	]*//g'
+	getconf _NPROCESSORS_ONLN
 }
 
 # print_bug