linux-kernel - [tip: core/rcu] torture: Add --allcpus argument to the kvm.sh script

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Message-ID: <159618736410.4006.3706383349129713648.tip-bot2@tip-bot2>
Date:   Fri, 31 Jul 2020 09:22:44 -0000
From:   "tip-bot2 for Paul E. McKenney" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     "Paul E. McKenney" <paulmck@...nel.org>, x86 <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [tip: core/rcu] torture: Add --allcpus argument to the kvm.sh script

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

Commit-ID:     a3ba4972f2ef8408dcc8a2a3d433621d6c990594
Gitweb:        https://git.kernel.org/tip/a3ba4972f2ef8408dcc8a2a3d433621d6c990594
Author:        Paul E. McKenney <paulmck@...nel.org>
AuthorDate:    Mon, 04 May 2020 16:41:53 -07:00
Committer:     Paul E. McKenney <paulmck@...nel.org>
CommitterDate: Mon, 29 Jun 2020 12:01:44 -07:00

torture: Add --allcpus argument to the kvm.sh script

Leaving off the kvm.sh script's --cpus argument results in the script
testing the scenarios sequentially, which can be quite slow.  However,
having to specify the actual number of CPUs can be error-prone.
This commit therefore adds a --allcpus argument that causes kvm.sh to
use all available CPUs.

Signed-off-by: Paul E. McKenney <paulmck@...nel.org>
---
 tools/testing/selftests/rcutorture/bin/kvm.sh | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/testing/selftests/rcutorture/bin/kvm.sh b/tools/testing/selftests/rcutorture/bin/kvm.sh
index c279cf9..7dbce7a 100755
--- a/tools/testing/selftests/rcutorture/bin/kvm.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm.sh
@@ -73,6 +73,10 @@ usage () {
 while test $# -gt 0
 do
 	case "$1" in
+	--allcpus)
+		cpus=$TORTURE_ALLOTED_CPUS
+		max_cpus=$TORTURE_ALLOTED_CPUS
+		;;
 	--bootargs|--bootarg)
 		checkarg --bootargs "(list of kernel boot arguments)" "$#" "$2" '.*' '^--'
 		TORTURE_BOOTARGS="$2"