!3 解决mainline编译失败

From: @jackie_wu123
Reviewed-by: @licihua
Signed-off-by: @licihua

bpftrace.spec

@@ -1,6 +1,6 @@
 Name:           bpftrace
 Version:        0.10.0
-Release:        1
+Release:        2
 Summary:        High-level tracing language for Linux eBPF
 License:        ASL 2.0
 
@@ -16,7 +16,7 @@ BuildRequires:  zlib-devel llvm-devel clang-devel
 BuildRequires:  bcc-devel >= 0.11.0-2
 BuildRequires:  libbpf-devel libbpf-static
 BuildRequires:  binutils-devel
-
+Patch0001:      fix_build_error.patch
 
 %description
 bpftrace is a high-level tracing language for Linux enhanced Berkeley Packet
@@ -62,5 +62,8 @@ find %{buildroot}%{_datadir}/%{name}/tools -type f -exec \
 
 
 %changelog
+* Mon Nov 9 2020 wutao <wutao61@huawei.com> - 0.10.0-2
+- fix build error
+
 * Thu May 07 2020 openEuler Buildteam <buildteam@openeuler.org> - 0.10.0-1
 - Package init

fix_build_error.patch

@@ -0,0 +1,17 @@
+From b7a8159fcaaeb7d0e2e64c2474f05ca199d970e8 Mon Sep 17 00:00:00 2001
+From: William Findlay <william@williamfindlay.com>
+Date: Sun, 21 Jun 2020 13:18:54 -0400
+Subject: [PATCH] Return 0 in detach_kfunc
+diff --git a/bpftrace-0.10.0-old/src/attached_probe.cpp b/bpftrace-0.10.0/src/attached_probe.cpp
+index 16486b6..8a2f739 100644
+--- a/src/attached_probe.cpp
++++ b/src/attached_probe.cpp
+@@ -115,7 +115,7 @@ void AttachedProbe::attach_kfunc(void)
+ int AttachedProbe::detach_kfunc(void)
+ {
+   close(tracing_fd_);
+-  return bpf_detach_kfunc(progfd_, NULL);
++  return 0;
+ }
+ #else
+ void AttachedProbe::attach_kfunc(void)