netdev - [PATCH v3 bpf-next 11/13] selftests/bpf: Improve test coverage of bpf_mem

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Date: Tue, 27 Jun 2023 18:56:32 -0700
From: Alexei Starovoitov <alexei.starovoitov@...il.com>
To: daniel@...earbox.net,
	andrii@...nel.org,
	void@...ifault.com,
	houtao@...weicloud.com,
	paulmck@...nel.org
Cc: tj@...nel.org,
	rcu@...r.kernel.org,
	netdev@...r.kernel.org,
	bpf@...r.kernel.org,
	kernel-team@...com
Subject: [PATCH v3 bpf-next 11/13] selftests/bpf: Improve test coverage of bpf_mem_alloc.

From: Alexei Starovoitov <ast@...nel.org>

bpf_obj_new() calls bpf_mem_alloc(), but doing alloc/free of 8 elements
is not triggering watermark conditions in bpf_mem_alloc.
Increase to 200 elements to make sure alloc_bulk/free_bulk is exercised.

Signed-off-by: Alexei Starovoitov <ast@...nel.org>
---
 tools/testing/selftests/bpf/progs/linked_list.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/bpf/progs/linked_list.c b/tools/testing/selftests/bpf/progs/linked_list.c
index 57440a554304..84d1777a9e6c 100644
--- a/tools/testing/selftests/bpf/progs/linked_list.c
+++ b/tools/testing/selftests/bpf/progs/linked_list.c
@@ -96,7 +96,7 @@ static __always_inline
 int list_push_pop_multiple(struct bpf_spin_lock *lock, struct bpf_list_head *head, bool leave_in_map)
 {
 	struct bpf_list_node *n;
-	struct foo *f[8], *pf;
+	struct foo *f[200], *pf;
 	int i;
 
 	/* Loop following this check adds nodes 2-at-a-time in order to
-- 
2.34.1