From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8F7331103 for ; Thu, 7 Sep 2023 07:14:09 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BB512C43391; Thu, 7 Sep 2023 07:14:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1694070849; bh=f9VNCmW1WWQYXdcHFtIiN0r638jkUiUI9ykSjimIqjQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JeVuchSfW3WWaeFLZdO0Y/qSupqqDYBHW0D+AlMrutnmR1BRiDp5Uk1zP101BucCt oIFnPwKnqsxI0T8OFv2jgauqdMjHX2i114gUSjVctf48VmQCYHLP5d21YyXLL4KzcX k3r7483NWTOGXyWgl5m7NMHwRXdvtTHRUXq1HuxVFpZoDPV1FTBM3EY4mDDAx1p9oD dYX+pN35hgB7IdAUkGT8qlPGp/Rk7N0PN6Mf3aiRsGZnBOZobIVWvwvaG99zGH0dL2 6qzfvgSS6MeDW/Pg608xz/H1KpyoJrKjTG59KciQejZGI50vDRMuwA2RDVUlTlZPSd HN9CluVz8itww== From: Jiri Olsa To: Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko Cc: Quentin Monnet , bpf@vger.kernel.org, Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Hou Tao , Daniel Xu Subject: [PATCHv2 bpf-next 5/9] bpftool: Display missed count for kprobe_multi link Date: Thu, 7 Sep 2023 09:13:07 +0200 Message-ID: <20230907071311.254313-6-jolsa@kernel.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230907071311.254313-1-jolsa@kernel.org> References: <20230907071311.254313-1-jolsa@kernel.org> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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" } ] } ] Reviewed-by: Quentin Monnet Signed-off-by: Jiri Olsa --- tools/bpf/bpftool/link.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tools/bpf/bpftool/link.c b/tools/bpf/bpftool/link.c index 2e5c231e08ac..d15d74cd1bed 100644 --- a/tools/bpf/bpftool/link.c +++ b/tools/bpf/bpftool/link.c @@ -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); -- 2.41.0