diff options
| author | Jiri Olsa <jolsa@kernel.org> | 2023-09-20 23:31:41 +0200 |
|---|---|---|
| committer | Quentin Monnet <qmonnet+github@qoba.lt> | 2023-10-02 22:38:39 +0200 |
| commit | aa4f5fbcaaf8a41bce44a97ef4e2a05c8170eb95 (patch) | |
| tree | 635e6dd11194c1428c303d3528884dc226349efe | |
| parent | 754163130f369fbb8391894c94a19b1f027b451e (diff) | |
| download | bpftool-aa4f5fbcaaf8a41bce44a97ef4e2a05c8170eb95.tar.gz | |
bpftool: Display missed count for kprobe_multi link
Adding 'missed' field to display missed counts for kprobes
attached by kprobe multi link, like:
# bpftool link
5: kprobe_multi prog 76
kprobe.multi func_cnt 1 missed 1
addr func [module]
ffffffffa039c030 fp3_test [fprobe_test]
# bpftool link -jp
[{
"id": 5,
"type": "kprobe_multi",
"prog_id": 76,
"retprobe": false,
"func_cnt": 1,
"missed": 1,
"funcs": [{
"addr": 18446744072102723632,
"func": "fp3_test",
"module": "fprobe_test"
}
]
}
]
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/bpf/20230920213145.1941596-6-jolsa@kernel.org
| -rw-r--r-- | src/link.c | 3 |
1 files changed, 3 insertions, 0 deletions
@@ -265,6 +265,7 @@ show_kprobe_multi_json(struct bpf_link_info *info, json_writer_t *wtr) jsonw_bool_field(json_wtr, "retprobe", info->kprobe_multi.flags & BPF_F_KPROBE_MULTI_RETURN); jsonw_uint_field(json_wtr, "func_cnt", info->kprobe_multi.count); + jsonw_uint_field(json_wtr, "missed", info->kprobe_multi.missed); jsonw_name(json_wtr, "funcs"); jsonw_start_array(json_wtr); addrs = u64_to_ptr(info->kprobe_multi.addrs); @@ -641,6 +642,8 @@ static void show_kprobe_multi_plain(struct bpf_link_info *info) else printf("\n\tkprobe.multi "); printf("func_cnt %u ", info->kprobe_multi.count); + if (info->kprobe_multi.missed) + printf("missed %llu ", info->kprobe_multi.missed); addrs = (__u64 *)u64_to_ptr(info->kprobe_multi.addrs); qsort(addrs, info->kprobe_multi.count, sizeof(__u64), cmp_u64); |