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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2025-12-03 16:54:54 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2025-12-03 16:54:54 -0800 |
| commit | 015e7b0b0e8e51f7321ec2aafc1d7fc0a8a5536f (patch) | |
| tree | 258f719e59946c733dd03198eba404e85f9d0945 /Documentation | |
| parent | b6d993310a65b994f37e3347419d9ed398ee37a3 (diff) | |
| parent | ff34657aa72a4dab9c2fd38e1b31a506951f4b1c (diff) | |
| download | net-015e7b0b0e8e51f7321ec2aafc1d7fc0a8a5536f.tar.gz | |
Merge tag 'bpf-next-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Pull bpf updates from Alexei Starovoitov:
- Convert selftests/bpf/test_tc_edt and test_tc_tunnel from .sh to
test_progs runner (Alexis Lothoré)
- Convert selftests/bpf/test_xsk to test_progs runner (Bastien
Curutchet)
- Replace bpf memory allocator with kmalloc_nolock() in
bpf_local_storage (Amery Hung), and in bpf streams and range tree
(Puranjay Mohan)
- Introduce support for indirect jumps in BPF verifier and x86 JIT
(Anton Protopopov) and arm64 JIT (Puranjay Mohan)
- Remove runqslower bpf tool (Hoyeon Lee)
- Fix corner cases in the verifier to close several syzbot reports
(Eduard Zingerman, KaFai Wan)
- Several improvements in deadlock detection in rqspinlock (Kumar
Kartikeya Dwivedi)
- Implement "jmp" mode for BPF trampoline and corresponding
DYNAMIC_FTRACE_WITH_JMP. It improves "fexit" program type performance
from 80 M/s to 136 M/s. With Steven's Ack. (Menglong Dong)
- Add ability to test non-linear skbs in BPF_PROG_TEST_RUN (Paul
Chaignon)
- Do not let BPF_PROG_TEST_RUN emit invalid GSO types to stack (Daniel
Borkmann)
- Generalize buildid reader into bpf_dynptr (Mykyta Yatsenko)
- Optimize bpf_map_update_elem() for map-in-map types (Ritesh
Oedayrajsingh Varma)
- Introduce overwrite mode for BPF ring buffer (Xu Kuohai)
* tag 'bpf-next-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (169 commits)
bpf: optimize bpf_map_update_elem() for map-in-map types
bpf: make kprobe_multi_link_prog_run always_inline
selftests/bpf: do not hardcode target rate in test_tc_edt BPF program
selftests/bpf: remove test_tc_edt.sh
selftests/bpf: integrate test_tc_edt into test_progs
selftests/bpf: rename test_tc_edt.bpf.c section to expose program type
selftests/bpf: Add success stats to rqspinlock stress test
rqspinlock: Precede non-head waiter queueing with AA check
rqspinlock: Disable spinning for trylock fallback
rqspinlock: Use trylock fallback when per-CPU rqnode is busy
rqspinlock: Perform AA checks immediately
rqspinlock: Enclose lock/unlock within lock entry acquisitions
bpf: Remove runqslower tool
selftests/bpf: Remove usage of lsm/file_alloc_security in selftest
bpf: Disable file_alloc_security hook
bpf: check for insn arrays in check_ptr_alignment
bpf: force BPF_F_RDONLY_PROG on insn array creation
bpf: Fix exclusive map memory leak
selftests/bpf: Make CS length configurable for rqspinlock stress test
selftests/bpf: Add lock wait time stats to rqspinlock stress test
...
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/bpf/libbpf/program_types.rst | 18 | ||||
| -rw-r--r-- | Documentation/bpf/map_array.rst | 5 |
2 files changed, 21 insertions, 2 deletions
diff --git a/Documentation/bpf/libbpf/program_types.rst b/Documentation/bpf/libbpf/program_types.rst index 218b020a2f81ff..3b837522834bf9 100644 --- a/Documentation/bpf/libbpf/program_types.rst +++ b/Documentation/bpf/libbpf/program_types.rst @@ -100,10 +100,26 @@ described in more detail in the footnotes. | | | ``uretprobe.s+`` [#uprobe]_ | Yes | + + +----------------------------------+-----------+ | | | ``usdt+`` [#usdt]_ | | ++ + +----------------------------------+-----------+ +| | | ``usdt.s+`` [#usdt]_ | Yes | + +----------------------------------------+----------------------------------+-----------+ | | ``BPF_TRACE_KPROBE_MULTI`` | ``kprobe.multi+`` [#kpmulti]_ | | + + +----------------------------------+-----------+ | | | ``kretprobe.multi+`` [#kpmulti]_ | | ++ +----------------------------------------+----------------------------------+-----------+ +| | ``BPF_TRACE_KPROBE_SESSION`` | ``kprobe.session+`` [#kpmulti]_ | | ++ +----------------------------------------+----------------------------------+-----------+ +| | ``BPF_TRACE_UPROBE_MULTI`` | ``uprobe.multi+`` [#upmul]_ | | ++ + +----------------------------------+-----------+ +| | | ``uprobe.multi.s+`` [#upmul]_ | Yes | ++ + +----------------------------------+-----------+ +| | | ``uretprobe.multi+`` [#upmul]_ | | ++ + +----------------------------------+-----------+ +| | | ``uretprobe.multi.s+`` [#upmul]_ | Yes | ++ +----------------------------------------+----------------------------------+-----------+ +| | ``BPF_TRACE_UPROBE_SESSION`` | ``uprobe.session+`` [#upmul]_ | | ++ + +----------------------------------+-----------+ +| | | ``uprobe.session.s+`` [#upmul]_ | Yes | +-------------------------------------------+----------------------------------------+----------------------------------+-----------+ | ``BPF_PROG_TYPE_LIRC_MODE2`` | ``BPF_LIRC_MODE2`` | ``lirc_mode2`` | | +-------------------------------------------+----------------------------------------+----------------------------------+-----------+ @@ -219,6 +235,8 @@ described in more detail in the footnotes. non-negative integer. .. [#ksyscall] The ``ksyscall`` attach format is ``ksyscall/<syscall>``. .. [#uprobe] The ``uprobe`` attach format is ``uprobe[.s]/<path>:<function>[+<offset>]``. +.. [#upmul] The ``uprobe.multi`` attach format is ``uprobe.multi[.s]/<path>:<function-pattern>`` + where ``function-pattern`` supports ``*`` and ``?`` wildcards. .. [#usdt] The ``usdt`` attach format is ``usdt/<path>:<provider>:<name>``. .. [#kpmulti] The ``kprobe.multi`` attach format is ``kprobe.multi/<pattern>`` where ``pattern`` supports ``*`` and ``?`` wildcards. Valid characters for pattern are diff --git a/Documentation/bpf/map_array.rst b/Documentation/bpf/map_array.rst index f2f51a53e8aed5..fa56ff75190c8f 100644 --- a/Documentation/bpf/map_array.rst +++ b/Documentation/bpf/map_array.rst @@ -15,8 +15,9 @@ of constant size. The size of the array is defined in ``max_entries`` at creation time. All array elements are pre-allocated and zero initialized when created. ``BPF_MAP_TYPE_PERCPU_ARRAY`` uses a different memory region for each CPU whereas ``BPF_MAP_TYPE_ARRAY`` uses the same memory region. The value -stored can be of any size, however, all array elements are aligned to 8 -bytes. +stored can be of any size for ``BPF_MAP_TYPE_ARRAY`` and not more than +``PCPU_MIN_UNIT_SIZE`` (32 kB) for ``BPF_MAP_TYPE_PERCPU_ARRAY``. All +array elements are aligned to 8 bytes. Since kernel 5.5, memory mapping may be enabled for ``BPF_MAP_TYPE_ARRAY`` by setting the flag ``BPF_F_MMAPABLE``. The map definition is page-aligned and |