[PATCH rcu 06/13] torture: Provide EXPERT Kconfig option for arm64 KCSAN torture.sh runs

[neeraj.upadhyay at kernel.org]

From: "Paul E. McKenney" <paulmck at kernel.org>

The arm64 architecture requires that KCSAN-enabled kernels be built with
the CONFIG_EXPERT=y Kconfig option.  This commit therefore causes the
torture.sh script to provide this option, but only for --kcsan runs on
arm64 systems.

Signed-off-by: Paul E. McKenney <paulmck at kernel.org>
Cc: Marco Elver <elver at google.com>
Cc: Dmitry Vyukov <dvyukov at google.com>
Cc: Catalin Marinas <catalin.marinas at arm.com>
Cc: Will Deacon <will at kernel.org>
Cc: <kasan-dev at googlegroups.com>
Cc: <linux-arm-kernel at lists.infradead.org>
Signed-off-by: Neeraj Upadhyay (AMD) <neeraj.upadhyay at kernel.org>
---
 tools/testing/selftests/rcutorture/bin/torture.sh | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/rcutorture/bin/torture.sh b/tools/testing/selftests/rcutorture/bin/torture.sh
index 25847042e30e..420c551b824b 100755
--- a/tools/testing/selftests/rcutorture/bin/torture.sh
+++ b/tools/testing/selftests/rcutorture/bin/torture.sh
@@ -313,6 +313,13 @@ then
 	do_scftorture=no
 fi
 
+# CONFIG_EXPERT=y is currently required for arm64 KCSAN runs.
+kcsan_expert=
+if test "${thisarch}" = aarch64
+then
+	kcsan_expert="CONFIG_EXPERT=y"
+fi
+
 touch $T/failures
 touch $T/successes
 
@@ -392,7 +399,7 @@ function torture_set {
 		then
 			chk_rdr_state="CONFIG_RCU_TORTURE_TEST_CHK_RDR_STATE=y"
 		fi
-		torture_one "$@" --kconfig "CONFIG_DEBUG_LOCK_ALLOC=y CONFIG_PROVE_LOCKING=y ${chk_rdr_state}" $kcsan_kmake_tag $cur_kcsan_kmake_args --kcsan
+		torture_one "$@" --kconfig "CONFIG_DEBUG_LOCK_ALLOC=y CONFIG_PROVE_LOCKING=y ${kcsan_expert} ${chk_rdr_state}" $kcsan_kmake_tag $cur_kcsan_kmake_args --kcsan
 		mv $T/last-resdir $T/last-resdir-kcsan || :
 	fi
 }
-- 
2.40.1