Update version

.travis.yml

@@ -1,6 +1,6 @@
 sudo: required
 language: bash
-dist: bionic
+dist: focal
 services:
     - docker
 
@@ -35,7 +35,7 @@ stages:
 
 jobs:
     include:
-        - stage: Kernel Selftests
+        - stage: Builds & Tests
           name: Kernel LATEST + selftests
           language: bash
           env: KERNEL=LATEST
@@ -51,8 +51,7 @@ jobs:
           env: KERNEL=5.5.0
           script:  $CI_ROOT/vmtest/run_vmtest.sh || travis_terminate 1
 
-        - stage: Builds
-          name: Debian Build
+        - name: Debian Build
           language: bash
           install:        $CI_ROOT/managers/debian.sh SETUP
           script:         $CI_ROOT/managers/debian.sh RUN || travis_terminate 1
@@ -76,33 +75,33 @@ jobs:
           script:         $CI_ROOT/managers/debian.sh RUN_CLANG_ASAN || travis_terminate 1
           after_script:   $CI_ROOT/managers/debian.sh CLEANUP
 
-        - name: Debian Build (gcc-8)
+        - name: Debian Build (gcc-10)
           language: bash
           install:        $CI_ROOT/managers/debian.sh SETUP
-          script:         $CI_ROOT/managers/debian.sh RUN_GCC8 || travis_terminate 1
+          script:         $CI_ROOT/managers/debian.sh RUN_GCC10 || travis_terminate 1
           after_script:   $CI_ROOT/managers/debian.sh CLEANUP
 
-        - name: Debian Build (gcc-8 ASan+UBSan)
+        - name: Debian Build (gcc-10 ASan+UBSan)
           language: bash
           install:        $CI_ROOT/managers/debian.sh SETUP
-          script:         $CI_ROOT/managers/debian.sh RUN_GCC8_ASAN || travis_terminate 1
+          script:         $CI_ROOT/managers/debian.sh RUN_GCC10_ASAN || travis_terminate 1
           after_script:   $CI_ROOT/managers/debian.sh CLEANUP
 
-        - name: Ubuntu Bionic Build
+        - name: Ubuntu Focal Build
           language: bash
           script: sudo $CI_ROOT/managers/ubuntu.sh || travis_terminate 1
 
-        - name: Ubuntu Bionic Build (arm)
+        - name: Ubuntu Focal Build (arm)
           arch: arm64
           language: bash
           script: sudo $CI_ROOT/managers/ubuntu.sh || travis_terminate 1
 
-        - name: Ubuntu Bionic Build (s390x)
+        - name: Ubuntu Focal Build (s390x)
           arch: s390x
           language: bash
           script: sudo $CI_ROOT/managers/ubuntu.sh || travis_terminate 1
 
-        - name: Ubuntu Bionic Build (ppc64le)
+        - name: Ubuntu Focal Build (ppc64le)
           arch: ppc64le
           language: bash
           script: sudo $CI_ROOT/managers/ubuntu.sh || travis_terminate 1
@@ -121,7 +120,7 @@ jobs:
               - COVERITY_SCAN_BUILD_COMMAND_PREPEND="cd src/"
               - COVERITY_SCAN_BUILD_COMMAND="make"
           install:
-              - sudo echo 'deb-src http://archive.ubuntu.com/ubuntu/ bionic main restricted universe multiverse' >>/etc/apt/sources.list
+              - sudo echo 'deb-src http://archive.ubuntu.com/ubuntu/ focal main restricted universe multiverse' >>/etc/apt/sources.list
               - sudo apt-get update
               - sudo apt-get -y build-dep libelf-dev
               - sudo apt-get install -y libelf-dev pkg-config

BPF-CHECKPOINT-COMMIT

@@ -1 +1 @@
-5b801dfb7feb2738975d80223efc2fc193e55573
+a14d273ba15968495896a38b7b3399dba66d0270

CHECKPOINT-COMMIT

@@ -1 +1 @@
-3c4f850e8441ac8b3b6dbaa6107604c4199ef01f
+1e1032b0c4afaed7739a6681ff6b4cb120b82994

README.md

@@ -1,17 +1,11 @@
-This is a mirror of [bpf-next Linux source
-tree](https://kernel.googlesource.com/pub/scm/linux/kernel/git/bpf/bpf-next)'s
-`tools/lib/bpf` directory plus its supporting header files.
+BPF/libbpf usage and questions
+==============================
 
-All the gory details of syncing can be found in `scripts/sync-kernel.sh`
-script.
-
-Some header files in this repo (`include/linux/*.h`) are reduced versions of
-their counterpart files at
-[bpf-next](https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git/)'s
-`tools/include/linux/*.h` to make compilation successful.
-
-BPF questions
-=============
+Please check out [libbpf-bootstrap](https://github.com/libbpf/libbpf-bootstrap)
+and [the companion blog post](https://nakryiko.com/posts/libbpf-bootstrap/) for
+the examples of building BPF applications with libbpf.
+[libbpf-tools](https://github.com/iovisor/bcc/tree/master/libbpf-tools) are also
+a good source of the real-world libbpf-based tracing tools.
 
 All general BPF questions, including kernel functionality, libbpf APIs and
 their application, should be sent to bpf@vger.kernel.org mailing list. You can
@@ -26,7 +20,7 @@ should be opened only for dealing with issues pertaining to specific way this
 libbpf mirror repo is set up and organized.
 
 Build
-[![Build Status](https://travis-ci.org/libbpf/libbpf.svg?branch=master)](https://travis-ci.org/libbpf/libbpf)
+[![Build Status](https://travis-ci.com/libbpf/libbpf.svg?branch=master)](https://travis-ci.com/github/libbpf/libbpf)
 [![Total alerts](https://img.shields.io/lgtm/alerts/g/libbpf/libbpf.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/libbpf/libbpf/alerts/)
 [![Coverity](https://img.shields.io/coverity/scan/18195.svg)](https://scan.coverity.com/projects/libbpf)
 =====
@@ -67,7 +61,10 @@ Distributions
 Distributions packaging libbpf from this mirror:
   - [Fedora](https://src.fedoraproject.org/rpms/libbpf)
   - [Gentoo](https://packages.gentoo.org/packages/dev-libs/libbpf)
-  - [Debian](https://packages.debian.org/sid/libbpf-dev)
+  - [Debian](https://packages.debian.org/source/sid/libbpf)
+  - [Arch](https://www.archlinux.org/packages/extra/x86_64/libbpf/)
+  - [Ubuntu](https://packages.ubuntu.com/source/groovy/libbpf)
+  - [Alpine](https://pkgs.alpinelinux.org/packages?name=libbpf)
 
 Benefits of packaging from the mirror over packaging from kernel sources:
   - Consistent versioning across distributions.
@@ -101,6 +98,8 @@ Some major Linux distributions come with kernel BTF already built in:
   - RHEL 8.2+
   - OpenSUSE Tumbleweed (in the next release, as of 2020-06-04)
   - Arch Linux (from kernel 5.7.1.arch1-1)
+  - Ubuntu 20.10
+  - Debian 11 (amd64/arm64)
 
 If your kernel doesn't come with BTF built-in, you'll need to build custom
 kernel. You'll need:
@@ -120,17 +119,34 @@ distributions have Clang/LLVM 10+ packaged by default:
   - Fedora 32+
   - Ubuntu 20.04+
   - Arch Linux
+  - Ubuntu 20.10 (LLVM 11)
+  - Debian 11 (LLVM 11)
+  - Alpine 3.13+
 
 Otherwise, please make sure to update it on your system.
 
 The following resources are useful to understand what BPF CO-RE is and how to
 use it:
-- [BPF Portability and CO-RE](https://facebookmicrosites.github.io/bpf/blog/2020/02/19/bpf-portability-and-co-re.html)
-- [HOWTO: BCC to libbpf conversion](https://facebookmicrosites.github.io/bpf/blog/2020/02/20/bcc-to-libbpf-howto-guide.html)
+- [BPF Portability and CO-RE](https://nakryiko.com/posts/bpf-portability-and-co-re/)
+- [HOWTO: BCC to libbpf conversion](https://nakryiko.com/posts/bcc-to-libbpf-howto-guide/)
 - [libbpf-tools in BCC repo](https://github.com/iovisor/bcc/tree/master/libbpf-tools)
   contain lots of real-world tools converted from BCC to BPF CO-RE. Consider
   converting some more to both contribute to the BPF community and gain some
   more experience with it.
+
+Details
+=======
+This is a mirror of [bpf-next Linux source
+tree](https://kernel.googlesource.com/pub/scm/linux/kernel/git/bpf/bpf-next)'s
+`tools/lib/bpf` directory plus its supporting header files.
+
+All the gory details of syncing can be found in `scripts/sync-kernel.sh`
+script.
+
+Some header files in this repo (`include/linux/*.h`) are reduced versions of
+their counterpart files at
+[bpf-next](https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git/)'s
+`tools/include/linux/*.h` to make compilation successful.
 
 License
 =======

include/linux/filter.h

@@ -5,6 +5,14 @@
 
 #include <linux/bpf.h>
 
+#define BPF_RAW_INSN(CODE, DST, SRC, OFF, IMM)			\
+	((struct bpf_insn) {					\
+		.code = CODE,					\
+		.dst_reg = DST,					\
+		.src_reg = SRC,					\
+		.off = OFF,					\
+		.imm = IMM })
+
 #define BPF_ALU64_IMM(OP, DST, IMM)				\
 	((struct bpf_insn) {					\
 		.code  = BPF_ALU64 | BPF_OP(OP) | BPF_K,	\

include/linux/list.h

@@ -72,11 +72,20 @@ static inline void list_del(struct list_head *entry)
         entry->prev = LIST_POISON2;
 }
 
+static inline int list_empty(const struct list_head *head)
+{
+	return head->next == head;
+}
+
 #define list_entry(ptr, type, member) \
         container_of(ptr, type, member)
 #define list_first_entry(ptr, type, member) \
         list_entry((ptr)->next, type, member)
 #define list_next_entry(pos, member) \
         list_entry((pos)->member.next, typeof(*(pos)), member)
+#define list_for_each_entry(pos, head, member) \
+	for (pos = list_first_entry(head, typeof(*pos), member); \
+	     &pos->member != (head); \
+	     pos = list_next_entry(pos, member))
 
 #endif