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| author | David Ahern <dsahern@gmail.com> | 2018-11-08 13:00:07 -0800 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2018-11-09 10:03:59 +0100 |
| commit | bf598a8f0f771302d4ecb0ef0003c54732221597 (patch) | |
| tree | 39da7a18141381033f339f182a7255814a161497 /tools/perf/scripts/python/exported-sql-viewer.py | |
| parent | selftests/bpf: add a test case for sock_ops perf-event notification (diff) | |
| download | linux-bf598a8f0f771302d4ecb0ef0003c54732221597.tar.gz linux-bf598a8f0f771302d4ecb0ef0003c54732221597.zip | |
bpftool: Improve handling of ENOENT on map dumps
bpftool output is not user friendly when dumping a map with only a few
populated entries:
$ bpftool map
1: devmap name tx_devmap flags 0x0
key 4B value 4B max_entries 64 memlock 4096B
2: array name tx_idxmap flags 0x0
key 4B value 4B max_entries 64 memlock 4096B
$ bpftool map dump id 1
key:
00 00 00 00
value:
No such file or directory
key:
01 00 00 00
value:
No such file or directory
key:
02 00 00 00
value:
No such file or directory
key: 03 00 00 00 value: 03 00 00 00
Handle ENOENT by keeping the line format sane and dumping
"<no entry>" for the value
$ bpftool map dump id 1
key: 00 00 00 00 value: <no entry>
key: 01 00 00 00 value: <no entry>
key: 02 00 00 00 value: <no entry>
key: 03 00 00 00 value: 03 00 00 00
...
Signed-off-by: David Ahern <dsahern@gmail.com>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'tools/perf/scripts/python/exported-sql-viewer.py')
0 files changed, 0 insertions, 0 deletions