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Daniel Borkmann says:
====================
pull-request: bpf-next 2022-03-04
We've added 32 non-merge commits during the last 14 day(s) which contain
a total of 59 files changed, 1038 insertions(+), 473 deletions(-).
The main changes are:
1) Optimize BPF stackmap's build_id retrieval by caching last valid build_id,
as consecutive stack frames are likely to be in the same VMA and therefore
have the same build id, from Hao Luo.
2) Several improvements to arm64 BPF JIT, that is, support for JITing
the atomic[64]_fetch_add, atomic[64]_[fetch_]{and,or,xor} and lastly
atomic[64]_{xchg|cmpxchg}. Also fix the BTF line info dump for JITed
programs, from Hou Tao.
3) Optimize generic BPF map batch deletion by only enforcing synchronize_rcu()
barrier once upon return to user space, from Eric Dumazet.
4) For kernel build parse DWARF and generate BTF through pahole with enabled
multithreading, from Kui-Feng Lee.
5) BPF verifier usability improvements by making log info more concise and
replacing inv with scalar type name, from Mykola Lysenko.
6) Two follow-up fixes for BPF prog JIT pack allocator, from Song Liu.
7) Add a new Kconfig to allow for loading kernel modules with non-matching
BTF type info; their BTF info is then removed on load, from Connor O'Brien.
8) Remove reallocarray() usage from bpftool and switch to libbpf_reallocarray()
in order to fix compilation errors for older glibc, from Mauricio Vásquez.
9) Fix libbpf to error on conflicting name in BTF when type declaration
appears before the definition, from Xu Kuohai.
10) Fix issue in BPF preload for in-kernel light skeleton where loaded BPF
program fds prevent init process from setting up fd 0-2, from Yucong Sun.
11) Fix libbpf reuse of pinned perf RB map when max_entries is auto-determined
by libbpf, from Stijn Tintel.
12) Several cleanups for libbpf and a fix to enforce perf RB map #pages to be
non-zero, from Yuntao Wang.
* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (32 commits)
bpf: Small BPF verifier log improvements
libbpf: Add a check to ensure that page_cnt is non-zero
bpf, x86: Set header->size properly before freeing it
x86: Disable HAVE_ARCH_HUGE_VMALLOC on 32-bit x86
bpf, test_run: Fix overflow in XDP frags bpf_test_finish
selftests/bpf: Update btf_dump case for conflicting names
libbpf: Skip forward declaration when counting duplicated type names
bpf: Add some description about BPF_JIT_ALWAYS_ON in Kconfig
bpf, docs: Add a missing colon in verifier.rst
bpf: Cache the last valid build_id
libbpf: Fix BPF_MAP_TYPE_PERF_EVENT_ARRAY auto-pinning
bpf, selftests: Use raw_tp program for atomic test
bpf, arm64: Support more atomic operations
bpftool: Remove redundant slashes
bpf: Add config to allow loading modules with BTF mismatches
bpf, arm64: Feed byte-offset into bpf line info
bpf, arm64: Call build_prologue() first in first JIT pass
bpf: Fix issue with bpf preload module taking over stdout/stdin of kernel.
bpftool: Bpf skeletons assert type sizes
bpf: Cleanup comments
...
====================
Link: https://lore.kernel.org/r/20220304164313.31675-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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| include | ||
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| kernel | ||
| lib | ||
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| net | ||
| samples | ||
| scripts | ||
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| .clang-format | ||
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| COPYING | ||
| CREDITS | ||
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| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.