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bpf: Show target_{obj,btf}_id for tracing link #5078

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bpf: Show target_{obj,btf}_id for tracing link #5078

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Pull request for series with
subject: bpf: Show target_{obj,btf}_id for tracing link
version: 1
url: https://patchwork.kernel.org/project/netdevbpf/list/?series=747977

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Upstream branch: 108598c
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=747977
version: 1

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Upstream branch: 108598c
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=747977
version: 1

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Upstream branch: 108598c
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=747977
version: 1

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Upstream branch: 3879122
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=747977
version: 1

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Upstream branch: de58ef4
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=747977
version: 1

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Upstream branch: 0697e43
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=747977
version: 1

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Upstream branch: cff3639
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=747977
version: 1

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Upstream branch: cff3639
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=748370
version: 2

@kernel-patches-daemon-bpf kernel-patches-daemon-bpf bot added V2 and removed V1 labels May 17, 2023
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Upstream branch: 2a36c26
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=748370
version: 2

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Upstream branch: 8819495
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=748370
version: 2

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Upstream branch: effcf62
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=748370
version: 2

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Upstream branch: effcf62
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=748370
version: 2

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Upstream branch: effcf62
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=748370
version: 2

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Upstream branch: effcf62
series: https://patchwork.kernel.org/project/netdevbpf/list/?series=748370
version: 2

laoar added 2 commits May 17, 2023 17:17
@laoar
bpf: Show target_{obj,btf}_id in tracing link fdinfo
8698077 
The target_btf_id can help us understand which kernel function is
linked by a tracing prog. The target_btf_id and target_obj_id have
already been exposed to userspace, so we just need to show them.

The result as follows,

$ cat /proc/10673/fdinfo/10
pos:    0
flags:  02000000
mnt_id: 15
ino:    2094
link_type:      tracing
link_id:        2
prog_tag:       a04f5eef06a7f555
prog_id:        13
attach_type:    24
target_obj_id:  1
target_btf_id:  13964

Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Acked-by: Song Liu <song@kernel.org>
@laoar
bpftool: Show target_{obj,btf}_id in tracing link info
c986c8a 
The target_btf_id can help us understand which kernel function is
linked by a tracing prog. The target_btf_id and target_obj_id have
already been exposed to userspace, so we just need to show them.

The result as follows,

$ tools/bpf/bpftool/bpftool link show
2: tracing  prog 13
        prog_type tracing  attach_type trace_fentry
        target_obj_id 1  target_btf_id 13964
        pids trace(10673)

$ tools/bpf/bpftool/bpftool link show -j
[{"id":2,"type":"tracing","prog_id":13,"prog_type":"tracing","attach_type":"trace_fentry","target_obj_id":1,"target_btf_id":13964,"pids":[{"pid":10673,"comm":"trace"}]}]

Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Acked-by: Song Liu <song@kernel.org>
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At least one diff in series https://patchwork.kernel.org/project/netdevbpf/list/?series=748370 irrelevant now. Closing PR.

@kernel-patches-daemon-bpf kernel-patches-daemon-bpf bot deleted the series/747977=>bpf-next branch May 19, 2023 17:13
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