contrib/bpf_inspect.py: show used maps and subprogs for bpf prog #408
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Unlike `bpftool p` to show bpf map ids, `drgn contrib/bpf_inspect.py p --show-details` is able to show more bpf map info, which is useful to identify the used `.rodata` map. Signed-off-by: Leon Hwang <hffilwlqm@gmail.com>
Show subprog list when `--show-details`. It's useful to inspect subprog function name. Signed-off-by: Leon Hwang <hffilwlqm@gmail.com>
Asphaltt
force-pushed
the
feature/bpf_inspect/bpf-prog-used-maps
branch
from
373db9c
to
7ff4906
Compare
|
LGTM, thanks. |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Show used maps and subprogs for bpf prog.
$ sudo drgn ./contrib/bpf_inspect.py p --show-details 2: BPF_PROG_TYPE_TRACING hid_tail_call used map: 2: BPF_MAP_TYPE_PROG_ARRAY hid_jmp_table 2295: BPF_PROG_TYPE_EXT entry tail_call_reachable used map: 4208: BPF_MAP_TYPE_ARRAY tailcall.bss used map: 4207: BPF_MAP_TYPE_PROG_ARRAY jmp_table func[ 0]: 0: BPF_PROG_TYPE_EXT entry tail_call_reachable func[ 1]: 0: BPF_PROG_TYPE_EXT subprog_tail 2400: BPF_PROG_TYPE_EXT entry tail_call_reachable used map: 4248: BPF_MAP_TYPE_ARRAY tailcall.bss used map: 4247: BPF_MAP_TYPE_PROG_ARRAY jmp_table func[ 0]: 0: BPF_PROG_TYPE_EXT entry tail_call_reachable func[ 1]: 0: BPF_PROG_TYPE_EXT subprog_tail 4235: BPF_PROG_TYPE_SCHED_CLS entry1 used map: 5092: BPF_MAP_TYPE_ARRAY .rodata func[ 0]: 0: BPF_PROG_TYPE_SCHED_CLS entry1 func[ 1]: 0: BPF_PROG_TYPE_SCHED_CLS subprog1 func[ 2]: 0: BPF_PROG_TYPE_SCHED_CLS subprog2Signed-off-by: Leon Hwang hffilwlqm@gmail.com