selftests/bpf: Add a test for objects stuck in free_by_rcu_ttracegrafted

Delete all elements of BPF_F_NO_PREALLOC hash map in one batch. The first
free_bulk() starts RCU tasks trace GP and the rest of the elements are
freed while it's in flight. Wait for call_rcu_ttrace_in_progress to clear
in bpf_mem_cache of every cpu and check that free_by_rcu_ttrace and
waiting_for_gp_ttrace lists are empty.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20260930095920.601738-4-alexei.starovoitov@gmail.com
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>

1 files changed, 20 insertions, 0 deletions

diff --git a/drivers/s390/net/Makefile b/drivers/s390/net/Makefile
new file mode 100644
index 000000000..038ba3e40
--- /dev/null
+++ b/drivers/s390/net/Makefile
@@ -0,0 +1,20 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# S/390 network devices
+#
+
+CONTEXT_ANALYSIS := y
+
+ctcm-y += ctcm_main.o ctcm_fsms.o ctcm_mpc.o ctcm_sysfs.o ctcm_dbug.o
+obj-$(CONFIG_CTCM) += ctcm.o fsm.o
+obj-$(CONFIG_SMSGIUCV) += smsgiucv.o
+obj-$(CONFIG_SMSGIUCV_EVENT) += smsgiucv_app.o
+qeth-y += qeth_core_sys.o qeth_core_main.o qeth_core_mpc.o qeth_ethtool.o
+obj-$(CONFIG_QETH) += qeth.o
+qeth_l2-y += qeth_l2_main.o qeth_l2_sys.o
+obj-$(CONFIG_QETH_L2) += qeth_l2.o
+qeth_l3-y += qeth_l3_main.o qeth_l3_sys.o
+obj-$(CONFIG_QETH_L3) += qeth_l3.o
+
+ism-y := ism_drv.o
+obj-$(CONFIG_ISM) += ism.o