Tao Chen ad954cbe08 bpftool: Display cookie for tracing link probe
Display cookie for tracing link probe, in plain mode:

 #bpftool link
5: tracing  prog 34
	prog_type tracing  attach_type trace_fentry
	target_obj_id 1  target_btf_id 60355
	cookie 4503599627370496
	pids test_progs(176)

And in json mode:

 #bpftool link -j | jq
{
    "id": 5,
    "type": "tracing",
    "prog_id": 34,
    "prog_type": "tracing",
    "attach_type": "trace_fentry",
    "target_obj_id": 1,
    "target_btf_id": 60355,
    "cookie": 4503599627370496,
    "pids": [
      {
        "pid": 176,
        "comm": "test_progs"
      }
    ]
 }

Signed-off-by: Tao Chen <chen.dylane@linux.dev>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20250606165818.3394397-3-chen.dylane@linux.dev
2025-06-09 16:45:17 -07:00

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 reStructuredText 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.
Description
Linux kernel source tree
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