Rebase to latest upstream version

- Resolves #1987381
- Resolves #1983754
- Add libdebuginfod support

Signed-off-by: Rafael dos Santos <rdossant@redhat.com>

.gitignore

@@ -14,3 +14,4 @@
 /0002-Use-libbpf-static-instead-of-libbpf-debugsource-for-.patch
 /bcc-src-with-submodule.tar.gz
 /bcc-0.20.0.tar.gz
+/bcc-0.21.0.tar.gz

bcc.spec

@@ -26,13 +26,16 @@
 %undefine __cmake_in_source_build
 
 Name:           bcc
-Version:        0.20.0
-Release:        5%{?dist}
+Version:        0.21.0
+Release:        1%{?dist}
 Summary:        BPF Compiler Collection (BCC)
 License:        ASL 2.0
 URL:            https://github.com/iovisor/bcc
 Source0:        %{url}/archive/v%{version}/%{name}-%{version}.tar.gz
 
+# https://bugzilla.redhat.com/show_bug.cgi?id=1987381
+Patch0:         libbpftools-readahead-fix.patch
+
 # Arches will be included as upstream support is added and dependencies are
 # satisfied in the respective arches
 ExclusiveArch:  x86_64 %{power64} aarch64 s390x armv7hl
@@ -43,6 +46,7 @@ BuildRequires:  flex
 BuildRequires:  libxml2-devel
 BuildRequires:  python3-devel
 BuildRequires:  elfutils-libelf-devel
+BuildRequires:  elfutils-debuginfod-client-devel
 BuildRequires:  llvm-devel
 BuildRequires:  clang-devel
 %if %{with llvm_static}
@@ -73,6 +77,7 @@ performance analysis and network traffic control.
 %package devel
 Summary:        Shared library for BPF Compiler Collection (BCC)
 Requires:       %{name}%{?_isa} = %{version}-%{release}
+Suggests:       elfutils-debuginfod-client
 
 %description devel
 The %{name}-devel package contains libraries and header files for developing
@@ -146,9 +151,19 @@ Command line libbpf tools for BPF Compiler Collection (BCC)
 # take them.
 %if %{with libbpf_tools}
 pushd libbpf-tools;
-make BPFTOOL=bpftool LIBBPF_OBJ=%{_libdir}/libbpf.a
+make BPFTOOL=bpftool LIBBPF_OBJ=%{_libdir}/libbpf.a CFLAGS="%{optflags}" LDFLAGS="%{build_ldflags}"
 make DESTDIR=./tmp-install prefix= install
-(cd tmp-install/bin; for file in *; do mv $file bpf-$file; done;)
+(
+    cd tmp-install/bin
+    for file in *; do
+        mv $file bpf-$file
+    done
+    # now fix the broken symlinks
+    for file in `find . -type l`; do
+        dest=$(readlink "$file")
+        ln -s -f bpf-$dest $file
+    done
+)
 popd
 %endif
 
@@ -182,7 +197,10 @@ rm -rf %{buildroot}%{_datadir}/%{name}/tools/old/
 
 %if %{with libbpf_tools}
 mkdir -p %{buildroot}/%{_sbindir}
-install libbpf-tools/tmp-install/bin/* %{buildroot}/%{_sbindir}
+# We cannot use `install` because some of the tools are symlinks and `install`
+# follows those. Since all the tools already have the correct permissions set,
+# we just need to copy them to the right place while preserving those
+cp -a libbpf-tools/tmp-install/bin/* %{buildroot}/%{_sbindir}/
 %endif
 
 %ldconfig_scriptlets
@@ -225,6 +243,10 @@ install libbpf-tools/tmp-install/bin/* %{buildroot}/%{_sbindir}
 %endif
 
 %changelog
+* Mon Aug 02 2021 Rafael dos Santos <rdossant@redhat.com> - 0.21.0-1
+- Rebase to latest release version
+- Add support to libdebuginfod
+
 * Wed Jul 21 2021 Fedora Release Engineering <releng@fedoraproject.org> - 0.20.0-5
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_35_Mass_Rebuild
 

libbpftools-readahead-fix.patch

@@ -0,0 +1,32 @@
+From a3c61b4b296da193fd77b06a6a9a4eb655a6cf76 Mon Sep 17 00:00:00 2001
+From: Jerome Marchand <jmarchan@redhat.com>
+Date: Fri, 30 Jul 2021 18:15:05 +0200
+Subject: [PATCH] libbpf-tools: readahead: don't mark struct hist as static
+
+Libbpf readahead tool does not compile with bpftool v5.14. Since
+commit 31332ccb756 ("bpftool: Stop emitting static variables in BPF
+skeleton"), bpftool gen skeleton does not include static variables
+into the skeleton file anymore.
+
+Fixes the following compilation error:
+readahead.c: In function 'main':
+readahead.c:153:26: error: 'struct readahead_bpf__bss' has no member named 'hist'
+  153 |         histp = &obj->bss->hist;
+      |                          ^~
+---
+ libbpf-tools/readahead.bpf.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/libbpf-tools/readahead.bpf.c b/libbpf-tools/readahead.bpf.c
+index ba22e534c4..b9423c3f9a 100644
+--- a/libbpf-tools/readahead.bpf.c
++++ b/libbpf-tools/readahead.bpf.c
+@@ -24,7 +24,7 @@ struct {
+ 	__uint(map_flags, BPF_F_NO_PREALLOC);
+ } birth SEC(".maps");
+ 
+-static struct hist hist;
++struct hist hist = {};
+ 
+ SEC("fentry/do_page_cache_ra")
+ int BPF_PROG(do_page_cache_ra)

sources

@@ -1 +1 @@
-SHA512 (bcc-0.20.0.tar.gz) = fa7c50a4fc64846ad798b6652101aa414cda53d08779cf48bd505191189cb23da2838f7511e700d59e086d35216f4e3bc9867b614738061630984dff3c4576dc
+SHA512 (bcc-0.21.0.tar.gz) = cd60dcd60ac0fdfc4a89dd0791f358cef0dfae5c06ef88352a256bdb13760ea8ed2cb1834f0929e66d91b2da23cf7a62fbabb36757d041e092f301fd1b368536