Re: [bpf-next v7 1/3] bpftool: Add auto_attach for bpf prog load|loadall

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在 2022/10/1 4:55, Andrii Nakryiko 写道:
On Tue, Sep 27, 2022 at 4:00 AM Wang Yufen <wangyufen@xxxxxxxxxx> wrote:
Add auto_attach optional to support one-step load-attach-pin_link.

For example,
    $ bpftool prog loadall test.o /sys/fs/bpf/test autoattach

    $ bpftool link
    26: tracing  name test1  tag f0da7d0058c00236  gpl
         loaded_at 2022-09-09T21:39:49+0800  uid 0
         xlated 88B  jited 55B  memlock 4096B  map_ids 3
         btf_id 55
    28: kprobe  name test3  tag 002ef1bef0723833  gpl
         loaded_at 2022-09-09T21:39:49+0800  uid 0
         xlated 88B  jited 56B  memlock 4096B  map_ids 3
         btf_id 55
    57: tracepoint  name oncpu  tag 7aa55dfbdcb78941  gpl
         loaded_at 2022-09-09T21:41:32+0800  uid 0
         xlated 456B  jited 265B  memlock 4096B  map_ids 17,13,14,15
         btf_id 82

    $ bpftool link
    1: tracing  prog 26
         prog_type tracing  attach_type trace_fentry
    3: perf_event  prog 28
    10: perf_event  prog 57

The autoattach optional can support tracepoints, k(ret)probes,
u(ret)probes.

Signed-off-by: Wei Yongjun <weiyongjun1@xxxxxxxxxx>
Signed-off-by: Wang Yufen <wangyufen@xxxxxxxxxx>
---
For next revision, please also attach cover letter describing the
overall goal of the patch set (and that's where the version log
between revisions is put as well).

Thanks, will add a cover letter in v8.



v6 -> v7: add info msg print and update doc for the skip program
v5 -> v6: skip the programs not supporting auto-attach,
           and change optional name from "auto_attach" to "autoattach"
v4 -> v5: some formatting nits of doc
v3 -> v4: rename functions, update doc, bash and do_help()
v2 -> v3: switch to extend prog load command instead of extend perf
v2: https://patchwork.kernel.org/project/netdevbpf/patch/20220824033837.458197-1-weiyongjun1@xxxxxxxxxx/
v1: https://patchwork.kernel.org/project/netdevbpf/patch/20220816151725.153343-1-weiyongjun1@xxxxxxxxxx/
  tools/bpf/bpftool/prog.c | 81 ++++++++++++++++++++++++++++++++++++++++++++++--
  1 file changed, 79 insertions(+), 2 deletions(-)

[...]




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