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From: David Vernet <void@manifault.com>
To: bpf@vger.kernel.org
Cc: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org,
	martin.lau@linux.dev, song@kernel.org, yhs@meta.com,
	john.fastabend@gmail.com, kpsingh@kernel.org, sdf@google.com,
	haoluo@google.com, jolsa@kernel.org,
	linux-kernel@vger.kernel.org, kernel-team@meta.com,
	tj@kernel.org
Subject: [PATCH bpf-next v2 2/4] libbpf: Support sleepable struct_ops.s section
Date: Tue, 24 Jan 2023 10:08:00 -0600	[thread overview]
Message-ID: <20230124160802.1122124-3-void@manifault.com> (raw)
In-Reply-To: <20230124160802.1122124-1-void@manifault.com>

In a prior change, the verifier was updated to support sleepable
BPF_PROG_TYPE_STRUCT_OPS programs. A caller could set the program as
sleepable with bpf_program__set_flags(), but it would be more ergonomic
and more in-line with other sleepable program types if we supported
suffixing a struct_ops section name with .s to indicate that it's
sleepable.

Signed-off-by: David Vernet <void@manifault.com>
---
 tools/lib/bpf/libbpf.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 27d9faa80471..eed5cec6f510 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -8605,6 +8605,7 @@ static const struct bpf_sec_def section_defs[] = {
 	SEC_DEF("cgroup/setsockopt",	CGROUP_SOCKOPT, BPF_CGROUP_SETSOCKOPT, SEC_ATTACHABLE),
 	SEC_DEF("cgroup/dev",		CGROUP_DEVICE, BPF_CGROUP_DEVICE, SEC_ATTACHABLE_OPT),
 	SEC_DEF("struct_ops+",		STRUCT_OPS, 0, SEC_NONE),
+	SEC_DEF("struct_ops.s+",	STRUCT_OPS, 0, SEC_SLEEPABLE),
 	SEC_DEF("sk_lookup",		SK_LOOKUP, BPF_SK_LOOKUP, SEC_ATTACHABLE),
 };
 
-- 
2.39.0


  parent reply	other threads:[~2023-01-24 16:09 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-24 16:07 [PATCH bpf-next v2 0/4] Enable struct_ops programs to be sleepable David Vernet
2023-01-24 16:07 ` [PATCH bpf-next v2 1/4] bpf: Allow BPF_PROG_TYPE_STRUCT_OPS " David Vernet
2023-01-24 16:08 ` David Vernet [this message]
2023-01-24 16:08 ` [PATCH bpf-next v2 3/4] bpf: Pass const struct bpf_prog * to .check_member David Vernet
2023-01-24 16:08 ` [PATCH bpf-next v2 4/4] bpf/selftests: Verify struct_ops prog sleepable behavior David Vernet
2023-01-24 19:52   ` Martin KaFai Lau
2023-01-24 21:11     ` David Vernet

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