diff options
Diffstat (limited to 'Documentation/bpf')
| -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 218b020a2f81..3b837522834b 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 f2f51a53e8ae..fa56ff75190c 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 |