selftests/bpf: Add tests for extending sleepable global subprogs

Add tests for freplace behavior with the combination of sleepable
and non-sleepable global subprogs. The changes_pkt_data selftest
did all the hardwork, so simply rename it and include new support
for more summarization tests for might_sleep bit.

Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20250301151846.1552362-4-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

1 files changed, 0 insertions, 18 deletions

diff --git a/tools/testing/selftests/bpf/progs/changes_pkt_data_freplace.c b/tools/testing/selftests/bpf/progs/changes_pkt_data_freplace.c
deleted file mode 100644
index f9a622705f1b3..0000000000000
--- a/tools/testing/selftests/bpf/progs/changes_pkt_data_freplace.c
+++ /dev/null
@@ -1,18 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-
-#include <linux/bpf.h>
-#include <bpf/bpf_helpers.h>
-
-SEC("?freplace")
-long changes_pkt_data(struct __sk_buff *sk)
-{
-	return bpf_skb_pull_data(sk, 0);
-}
-
-SEC("?freplace")
-long does_not_change_pkt_data(struct __sk_buff *sk)
-{
-	return 0;
-}
-
-char _license[] SEC("license") = "GPL";