From aeb709c767aeca996e6011133e4f7bdb2a4af652 Mon Sep 17 00:00:00 2001 From: Alexei Starovoitov Date: Wed, 30 Sep 2026 09:59:20 +0000 Subject: selftests/bpf: Add a test for objects stuck in free_by_rcu_ttrace 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 Link: https://lore.kernel.org/bpf/20260930095920.601738-4-alexei.starovoitov@gmail.com Signed-off-by: Kumar Kartikeya Dwivedi --- tools/testing/shared/maple-shim.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) create mode 100644 tools/testing/shared/maple-shim.c (limited to 'tools/testing/shared/maple-shim.c') diff --git a/tools/testing/shared/maple-shim.c b/tools/testing/shared/maple-shim.c new file mode 100644 index 000000000..16252ee61 --- /dev/null +++ b/tools/testing/shared/maple-shim.c @@ -0,0 +1,14 @@ +// SPDX-License-Identifier: GPL-2.0-or-later + +/* Very simple shim around the maple tree. */ + +#include "maple-shared.h" +#include + +#include "../../../lib/maple_tree.c" + +void maple_rcu_cb(struct rcu_head *head) { + struct maple_node *node = container_of(head, struct maple_node, rcu); + + kmem_cache_free(maple_node_cache, node); +} -- cgit v1.3.1