From: "Morten Brørup" <mb@smartsharesystems.com>
To: "David Marchand" <david.marchand@redhat.com>, <dev@dpdk.org>
Cc: <thomas@monjalon.net>, <ferruh.yigit@amd.com>,
<bruce.richardson@intel.com>, <stephen@networkplumber.org>
Subject: RE: [RFC 0/3] Detect superfluous newline in logs
Date: Fri, 17 Nov 2023 14:47:25 +0100 [thread overview]
Message-ID: <98CBD80474FA8B44BF855DF32C47DC35E9F03C@smartserver.smartshare.dk> (raw)
In-Reply-To: <20231117131824.1977792-1-david.marchand@redhat.com>
> From: David Marchand [mailto:david.marchand@redhat.com]
> Sent: Friday, 17 November 2023 14.18
>
> Getting readable and consistent logs is important when running a DPDK
> application, especially when troubleshooting.
> A common issue with logs is when a DPDK change do not add (or on the
> contrary add too many \n) in the format string.
>
> This issue would only get noticed when actually hitting this log (which
> may be something difficult to do).
>
> This series proposes to introduce a new RTE_LOG helper that is
> responsible for logging a one line message and spews a build error
> (with gcc) if any \n is part of the format string.
>
The new helper's name is RTE_LOG_LINE, not RTE_LOG.
As far as I can see, RTE_LOG continues working as before - allowing one line of log message to span multiple lines of RTE_LOG() calls with \n in the last of them. Which is good.
Anyway, I like the concept. And it solves a real problem.
If you want other names, e.g. RTE_LOG for a complete line (appending \n in the macro itself), and RTE_LOG_PART (or similar) for an incomplete line, I wouldn't object. But that would probably break the API.
>
> Note:
> - the first patch is intentionnally sent as a single block: splitting
> it
> into per library commits with correct Fixes: tags is a tedious work.
> I would split it for a non RFC series. For now, it is enough to show
> case the idea.
> - the last patch shows how an existing log macro is converted,
next prev parent reply other threads:[~2023-11-17 13:47 UTC|newest]
Thread overview: 122+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-17 13:18 David Marchand
2023-11-17 13:18 ` [RFC 1/3] lib: remove redundant newline from logs David Marchand
2023-11-17 13:18 ` [RFC 2/3] log: add a per line log helper David Marchand
2023-11-17 13:18 ` [RFC 3/3] lib: use per line logging David Marchand
2023-11-17 13:27 ` [RFC 0/3] Detect superfluous newline in logs Bruce Richardson
2023-11-17 13:48 ` David Marchand
2023-11-17 14:11 ` Bruce Richardson
2023-11-17 14:21 ` David Marchand
2023-11-17 13:47 ` Morten Brørup [this message]
2023-11-17 14:09 ` David Marchand
2023-11-17 14:17 ` Morten Brørup
2023-12-08 14:59 ` [RFC v2 00/14] " David Marchand
2023-12-08 14:59 ` [RFC v2 01/14] hash: remove some dead code David Marchand
2023-12-08 16:53 ` Stephen Hemminger
2023-12-08 20:46 ` Tyler Retzlaff
2023-12-08 14:59 ` [RFC v2 02/14] regexdev: fix logtype register David Marchand
2023-12-08 16:58 ` Stephen Hemminger
2023-12-08 20:46 ` Tyler Retzlaff
2023-12-14 10:11 ` Ori Kam
2023-12-08 14:59 ` [RFC v2 03/14] lib: use dedicated logtypes David Marchand
2023-12-08 17:00 ` Stephen Hemminger
2023-12-08 20:49 ` Tyler Retzlaff
2023-12-16 9:47 ` Andrew Rybchenko
2023-12-08 14:59 ` [RFC v2 04/14] lib: add newline in logs David Marchand
2023-12-08 17:01 ` Stephen Hemminger
2023-12-11 12:38 ` David Marchand
2023-12-08 20:50 ` Tyler Retzlaff
2023-12-16 9:43 ` Andrew Rybchenko
2023-12-08 14:59 ` [RFC v2 05/14] lib: remove redundant newline from logs David Marchand
2023-12-08 17:02 ` Stephen Hemminger
2023-12-09 7:15 ` fengchengwen
2023-12-11 8:48 ` Mattias Rönnblom
2023-12-08 14:59 ` [RFC v2 06/14] eal/linux: remove log paraphrasing the doc David Marchand
2023-12-08 17:03 ` Stephen Hemminger
2023-12-08 20:54 ` Tyler Retzlaff
2023-12-08 14:59 ` [RFC v2 07/14] bpf: remove log level in internal helper David Marchand
2023-12-08 17:04 ` Stephen Hemminger
2023-12-08 21:02 ` Tyler Retzlaff
2023-12-08 14:59 ` [RFC v2 08/14] lib: simplify multilines log messages David Marchand
2023-12-08 17:05 ` Stephen Hemminger
2023-12-16 9:26 ` Andrew Rybchenko
2023-12-08 21:03 ` Tyler Retzlaff
2023-12-08 14:59 ` [RFC v2 09/14] rcu: introduce a logging helper David Marchand
2023-12-08 17:08 ` Stephen Hemminger
2023-12-08 18:26 ` Honnappa Nagarahalli
2023-12-08 21:27 ` Tyler Retzlaff
2023-12-12 15:00 ` David Marchand
2023-12-12 19:11 ` Tyler Retzlaff
2023-12-18 9:37 ` David Marchand
2023-12-18 19:52 ` Tyler Retzlaff
2023-12-08 14:59 ` [RFC v2 10/14] vhost: improve log for memory dumping configuration David Marchand
2023-12-08 17:14 ` Stephen Hemminger
2023-12-08 14:59 ` [RFC v2 11/14] log: add a per line log helper David Marchand
2023-12-08 17:15 ` Stephen Hemminger
2023-12-09 7:21 ` fengchengwen
2023-12-08 14:59 ` [RFC v2 12/14] lib: convert to per line logging David Marchand
2023-12-08 17:16 ` Stephen Hemminger
2023-12-11 12:34 ` David Marchand
2023-12-16 9:30 ` Andrew Rybchenko
2023-12-08 14:59 ` [RFC v2 13/14] lib: replace logging helpers David Marchand
2023-12-08 17:18 ` Stephen Hemminger
2023-12-11 12:36 ` David Marchand
2023-12-16 9:42 ` Andrew Rybchenko
2023-12-08 14:59 ` [RFC v2 14/14] lib: use per line logging in helpers David Marchand
2023-12-09 7:19 ` fengchengwen
2023-12-16 9:41 ` Andrew Rybchenko
2023-12-18 9:27 ` [PATCH v3 00/14] Detect superfluous newline in logs David Marchand
2023-12-18 9:27 ` [PATCH v3 01/14] hash: remove some dead code David Marchand
2023-12-18 9:27 ` [PATCH v3 02/14] regexdev: fix logtype register David Marchand
2023-12-18 9:27 ` [PATCH v3 03/14] lib: use dedicated logtypes and macros David Marchand
2023-12-18 9:27 ` [PATCH v3 04/14] lib: add newline in logs David Marchand
2023-12-18 9:27 ` [PATCH v3 05/14] lib: remove redundant newline from logs David Marchand
2023-12-18 9:27 ` [PATCH v3 06/14] eal/linux: remove log paraphrasing the doc David Marchand
2023-12-18 9:27 ` [PATCH v3 07/14] bpf: remove log level in internal helper David Marchand
2023-12-18 9:27 ` [PATCH v3 08/14] lib: simplify multilines log messages David Marchand
2023-12-18 10:05 ` Andrew Rybchenko
2023-12-18 9:27 ` [PATCH v3 09/14] rcu: introduce a logging helper David Marchand
2023-12-18 9:27 ` [PATCH v3 10/14] vhost: improve log for memory dumping configuration David Marchand
2023-12-18 9:27 ` [PATCH v3 11/14] log: add a per line log helper David Marchand
2023-12-18 9:27 ` [PATCH v3 12/14] lib: convert to per line logging David Marchand
2023-12-18 9:27 ` [PATCH v3 13/14] lib: replace logging helpers David Marchand
2023-12-18 9:27 ` [PATCH v3 14/14] lib: use per line logging in helpers David Marchand
2023-12-18 14:37 ` [PATCH v4 00/14] Detect superfluous newline in logs David Marchand
2023-12-18 14:37 ` [PATCH v4 01/14] hash: remove some dead code David Marchand
2023-12-18 14:37 ` [PATCH v4 02/14] regexdev: fix logtype register David Marchand
2023-12-18 16:46 ` Stephen Hemminger
2023-12-18 14:37 ` [PATCH v4 03/14] lib: use dedicated logtypes and macros David Marchand
2023-12-18 14:37 ` [PATCH v4 04/14] lib: add newline in logs David Marchand
2023-12-18 14:37 ` [PATCH v4 05/14] lib: remove redundant newline from logs David Marchand
2023-12-18 14:37 ` [PATCH v4 06/14] eal/linux: remove log paraphrasing the doc David Marchand
2023-12-18 14:37 ` [PATCH v4 07/14] bpf: remove log level in internal helper David Marchand
2023-12-18 14:37 ` [PATCH v4 08/14] lib: simplify multilines log messages David Marchand
2023-12-18 14:37 ` [PATCH v4 09/14] rcu: introduce a logging helper David Marchand
2023-12-18 14:37 ` [PATCH v4 10/14] vhost: improve log for memory dumping configuration David Marchand
2023-12-18 14:38 ` [PATCH v4 11/14] log: add a per line log helper David Marchand
2023-12-19 15:45 ` Thomas Monjalon
2023-12-19 17:16 ` Stephen Hemminger
2023-12-20 8:26 ` David Marchand
2023-12-18 14:38 ` [PATCH v4 12/14] lib: convert to per line logging David Marchand
2023-12-20 13:46 ` Thomas Monjalon
2023-12-20 14:00 ` David Marchand
2023-12-18 14:38 ` [PATCH v4 13/14] lib: replace logging helpers David Marchand
2023-12-18 14:38 ` [PATCH v4 14/14] lib: use per line logging in helpers David Marchand
2023-12-20 15:35 ` [PATCH v5 00/13] Detect superfluous newline in logs David Marchand
2023-12-20 15:35 ` [PATCH v5 01/13] hash: remove some dead code David Marchand
2023-12-21 5:58 ` Ruifeng Wang
2023-12-21 6:26 ` Ruifeng Wang
2023-12-20 15:35 ` [PATCH v5 02/13] regexdev: fix logtype register David Marchand
2023-12-20 15:35 ` [PATCH v5 03/13] lib: use dedicated logtypes and macros David Marchand
2023-12-20 15:35 ` [PATCH v5 04/13] lib: add newline in logs David Marchand
2023-12-20 15:35 ` [PATCH v5 05/13] lib: remove redundant newline from logs David Marchand
2023-12-20 15:35 ` [PATCH v5 06/13] eal/linux: remove log paraphrasing the doc David Marchand
2023-12-20 15:36 ` [PATCH v5 07/13] bpf: remove log level in internal helper David Marchand
2023-12-20 15:36 ` [PATCH v5 08/13] lib: simplify multilines log messages David Marchand
2023-12-20 15:36 ` [PATCH v5 09/13] lib: add more logging helpers David Marchand
2023-12-20 15:36 ` [PATCH v5 10/13] vhost: improve log for memory dumping configuration David Marchand
2023-12-20 15:36 ` [PATCH v5 11/13] log: add a per line log helper David Marchand
2023-12-20 15:42 ` David Marchand
2023-12-20 15:36 ` [PATCH v5 12/13] lib: replace logging helpers David Marchand
2023-12-20 15:36 ` [PATCH v5 13/13] lib: use per line logging in helpers David Marchand
2023-12-21 9:31 ` [PATCH v5 00/13] Detect superfluous newline in logs David Marchand
2023-12-21 16:32 ` Stephen Hemminger
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