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[Backport]libbpf: Support detecting and attaching of writable tracepoint program

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https://lore.kernel.org/bpf/20211004094857.30868-3-hotforest@gmail.com

Signed-off-by: Lv Ying <lvying6@huawei.com>
This commit is contained in:
Lv Ying 2021-11-10 10:06:24 +08:00
parent 8d9e0e382d
commit 8cdc5452d7
2 changed files with 42 additions and 2 deletions
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34
backport-libbpf-Support-detecting-and-attaching-of-writable-t.patch Normal file
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@ -0,0 +1,34 @@
From 4d32ba754a242fb31827923c4a6f051063b32fea Mon Sep 17 00:00:00 2001
From: Hou Tao <houtao1@huawei.com>
Date: Mon, 4 Oct 2021 17:48:56 +0800
Subject: [PATCH] libbpf: Support detecting and attaching of writable
tracepoint program
Program on writable tracepoint is BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE,
but its attachment is the same as BPF_PROG_TYPE_RAW_TRACEPOINT.
Signed-off-by: Hou Tao <houtao1@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211004094857.30868-3-hotforest@gmail.com
---
src/libbpf.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/src/libbpf.c b/src/libbpf.c
index d9ece93..02e9d33 100644
--- a/src/libbpf.c
+++ b/src/libbpf.c
@@ -6894,6 +6894,10 @@ static const struct bpf_sec_def section_defs[] = {
.attach_fn = attach_raw_tp),
SEC_DEF("raw_tp/", RAW_TRACEPOINT,
.attach_fn = attach_raw_tp),
+ SEC_DEF("raw_tracepoint.w/", RAW_TRACEPOINT_WRITABLE,
+ .attach_fn = attach_raw_tp),
+ SEC_DEF("raw_tp.w/", RAW_TRACEPOINT_WRITABLE,
+ .attach_fn = attach_raw_tp),
SEC_DEF("tp_btf/", TRACING,
.expected_attach_type = BPF_TRACE_RAW_TP,
.is_attach_btf = true,
--
2.29.2

10
libbpf.spec
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@ -4,7 +4,7 @@
Name: %{githubname}
Version: %{githubver}
Release: 1
Release: 2
Summary: Libbpf library
License: LGPLv2 or BSD
@ -12,6 +12,8 @@ URL: https://github.com/%{githubname}/%{githubname}
Source: https://github.com/%{githubname}/%{githubname}/archive/v%{githubver}.tar.gz
BuildRequires: gcc elfutils-libelf-devel elfutils-devel
Patch6000: backport-libbpf-Support-detecting-and-attaching-of-writable-t.patch
# This package supersedes libbpf from kernel-tools,
# which has default Epoch: 0. By having Epoch: 1
# this libbpf will take over smoothly
@ -42,7 +44,7 @@ developing applications that use %{name}
%global make_flags DESTDIR=%{buildroot} OBJDIR=%{_builddir} CFLAGS="%{build_cflags} -fPIC" LDFLAGS="%{build_ldflags} -Wl,--no-as-needed" LIBDIR=/%{_libdir} NO_PKG_CONFIG=1
%prep
%autosetup -n %{githubfull}
%autosetup -n %{githubfull} -p1
%build
%make_build -C ./src %{make_flags}
@ -63,6 +65,10 @@ developing applications that use %{name}
%{_libdir}/libbpf.a
%changelog
* Wed Nov 10 2021 Lv Ying<lvying6@huawei.com> - 0.1.1-2
- support detecting and attaching of writable tracepoint program
https://lore.kernel.org/bpf/20211004094857.30868-3-hotforest@gmail.com
* Tue Nov 17 2020 nlgwcy <wuchangye@huawei.com> - 0.1.1-1
- update libbpf from v0.0.6 to v0.1.1