From: Alexei Starovoitov <ast@fb.com>
To: Andrii Nakryiko <andrii.nakryiko@gmail.com>, Yonghong Song <yhs@fb.com>
Cc: Andrii Nakryiko <andriin@fb.com>, bpf <bpf@vger.kernel.org>,
Martin KaFai Lau <kafai@fb.com>,
Networking <netdev@vger.kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Kernel Team <kernel-team@fb.com>
Subject: Re: [PATCH bpf-next v2 05/20] bpf: implement bpf_seq_read() for bpf iterator
Date: Tue, 5 May 2020 12:57:46 -0700 [thread overview]
Message-ID: <8900204f-c2db-10aa-7890-099db3b006b1@fb.com> (raw)
In-Reply-To: <CAEf4BzYKACiOB+cAC+g-LdJNJbnz9yrGyw7VsBoW1b2pHjUghw@mail.gmail.com>
On 5/5/20 12:56 PM, Andrii Nakryiko wrote:
>> + seq->buf = kmalloc(seq->size, GFP_KERNEL);
>> + if (!seq->buf)
>> + goto Enomem;
> Why not just mutex_unlock and exit with -ENOMEM? Less goto'ing, more
> straightforward.
>
no. please keep kernel coding style. goto is appropriate here.
next prev parent reply other threads:[~2020-05-05 19:58 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-04 6:25 [PATCH bpf-next v2 00/20] bpf: implement bpf iterator for kernel data Yonghong Song
2020-05-04 6:25 ` [PATCH bpf-next v2 01/20] bpf: implement an interface to register bpf_iter targets Yonghong Song
2020-05-05 21:19 ` Andrii Nakryiko
2020-05-04 6:25 ` [PATCH bpf-next v2 02/20] bpf: allow loading of a bpf_iter program Yonghong Song
2020-05-05 21:29 ` Andrii Nakryiko
2020-05-06 0:07 ` Yonghong Song
2020-05-04 6:25 ` [PATCH bpf-next v2 03/20] bpf: support bpf tracing/iter programs for BPF_LINK_CREATE Yonghong Song
2020-05-05 21:30 ` Andrii Nakryiko
2020-05-06 0:14 ` Yonghong Song
2020-05-06 0:54 ` Alexei Starovoitov
2020-05-06 3:09 ` Andrii Nakryiko
2020-05-06 18:08 ` Alexei Starovoitov
2020-05-04 6:25 ` [PATCH bpf-next v2 04/20] bpf: support bpf tracing/iter programs for BPF_LINK_UPDATE Yonghong Song
2020-05-05 21:32 ` Andrii Nakryiko
2020-05-04 6:25 ` [PATCH bpf-next v2 05/20] bpf: implement bpf_seq_read() for bpf iterator Yonghong Song
2020-05-05 19:56 ` Andrii Nakryiko
2020-05-05 19:57 ` Alexei Starovoitov [this message]
2020-05-05 20:25 ` Yonghong Song
2020-05-05 21:08 ` Andrii Nakryiko
2020-05-04 6:25 ` [PATCH bpf-next v2 06/20] bpf: create anonymous " Yonghong Song
2020-05-05 20:11 ` Andrii Nakryiko
2020-05-05 20:28 ` Yonghong Song
2020-05-04 6:25 ` [PATCH bpf-next v2 07/20] bpf: create file " Yonghong Song
2020-05-05 20:15 ` Andrii Nakryiko
2020-05-04 6:25 ` [PATCH bpf-next v2 08/20] bpf: implement common macros/helpers for target iterators Yonghong Song
2020-05-05 20:25 ` Andrii Nakryiko
2020-05-05 20:30 ` Yonghong Song
2020-05-05 21:10 ` Andrii Nakryiko
2020-05-04 6:25 ` [PATCH bpf-next v2 09/20] bpf: add bpf_map iterator Yonghong Song
2020-05-06 5:11 ` Andrii Nakryiko
2020-05-04 6:25 ` [PATCH bpf-next v2 10/20] net: bpf: add netlink and ipv6_route bpf_iter targets Yonghong Song
2020-05-06 5:21 ` Andrii Nakryiko
2020-05-06 17:32 ` Yonghong Song
2020-05-04 6:25 ` [PATCH bpf-next v2 11/20] bpf: add task and task/file iterator targets Yonghong Song
2020-05-06 7:30 ` Andrii Nakryiko
2020-05-06 18:24 ` Yonghong Song
2020-05-06 20:51 ` Andrii Nakryiko
2020-05-06 21:20 ` Yonghong Song
2020-05-04 6:26 ` [PATCH bpf-next v2 12/20] bpf: add PTR_TO_BTF_ID_OR_NULL support Yonghong Song
2020-05-05 20:27 ` Andrii Nakryiko
2020-05-04 6:26 ` [PATCH bpf-next v2 13/20] bpf: add bpf_seq_printf and bpf_seq_write helpers Yonghong Song
2020-05-06 17:37 ` Andrii Nakryiko
2020-05-06 21:42 ` Yonghong Song
2020-05-08 18:15 ` Andrii Nakryiko
2020-05-04 6:26 ` [PATCH bpf-next v2 14/20] bpf: handle spilled PTR_TO_BTF_ID properly when checking stack_boundary Yonghong Song
2020-05-06 17:38 ` Andrii Nakryiko
2020-05-06 21:47 ` Yonghong Song
2020-05-04 6:26 ` [PATCH bpf-next v2 15/20] bpf: support variable length array in tracing programs Yonghong Song
2020-05-06 17:40 ` Andrii Nakryiko
2020-05-04 6:26 ` [PATCH bpf-next v2 16/20] tools/libbpf: add bpf_iter support Yonghong Song
2020-05-06 5:44 ` Andrii Nakryiko
2020-05-04 6:26 ` [PATCH bpf-next v2 17/20] tools/bpftool: add bpf_iter support for bptool Yonghong Song
2020-05-04 6:26 ` [PATCH bpf-next v2 18/20] tools/bpf: selftests: add iterator programs for ipv6_route and netlink Yonghong Song
2020-05-06 6:01 ` Andrii Nakryiko
2020-05-07 1:09 ` Yonghong Song
2020-05-08 18:17 ` Andrii Nakryiko
2020-05-06 6:04 ` Andrii Nakryiko
2020-05-06 23:07 ` Yonghong Song
2020-05-04 6:26 ` [PATCH bpf-next v2 19/20] tools/bpf: selftests: add iter progs for bpf_map/task/task_file Yonghong Song
2020-05-06 6:14 ` Andrii Nakryiko
2020-05-04 6:26 ` [PATCH bpf-next v2 20/20] tools/bpf: selftests: add bpf_iter selftests Yonghong Song
2020-05-06 6:39 ` Andrii Nakryiko
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