From: Bruce Richardson <bruce.richardson@intel.com>
To: David Marchand <david.marchand@redhat.com>
Cc: <dev@dpdk.org>, Thomas Monjalon <thomas@monjalon.net>,
Dodji Seketeli <dodji@redhat.com>
Subject: Re: [PATCH v4 0/3] Split logging functionality out of EAL
Date: Mon, 23 Jan 2023 14:24:30 +0000 [thread overview]
Message-ID: <Y86Yns5mJFu9018T@bricha3-MOBL.ger.corp.intel.com> (raw)
In-Reply-To: <CAJFAV8wB6cKsUvkRo2-qK+DNfuUSs7ei9Gta1DhQ7awfae3hNA@mail.gmail.com>
On Sun, Jan 22, 2023 at 03:56:12PM +0100, David Marchand wrote:
> Hi Bruce,
>
> On Fri, Jan 20, 2023 at 7:22 PM Bruce Richardson
> <bruce.richardson@intel.com> wrote:
> >
> > There is a general desire to reduce the size and scope of EAL. To this
> > end, this patchset makes a (very) small step in that direction by taking
> > the logging functionality out of EAL and putting it into its own library
> > that can be built and maintained separately.
> >
> > As with the first RFC for this, the main obstacle is the "fnmatch"
> > function which is needed by both EAL and the new log function when
> > building on windows. While the function cannot stay in EAL - or we would
> > have a circular dependency, moving it to a new library or just putting
> > it in the log library have the disadvantages that it then "leaks" into
> > the public namespace without an rte_prefix, which could cause issues.
> > Since only a single function is involved, subsequent versions take a
> > different approach to v1, and just moves the offending function to be a
> > static function in a header file. This allows use by multiple libs
> > without conflicting names or making it public.
> >
> > The other complication, as explained in v1 RFC was that of multiple
> > implementations for different OS's. This is solved here in the same
> > way as v1, by including the OS in the name and having meson pick the
> > correct file for each build. Since only one file is involved, there
> > seemed little need for replicating EAL's separate subdirectories
> > per-OS.
>
> There is another complication.
>
> The ABI check is not handling properly the case where symbols are
> moved to the new log library (even though the dependency to librte_log
> is explicit in librte_eal elf).
> For now, I don't have a good way to handle this.
>
> A workaround to pass the check is to suppress those symbols wrt the eal dump:
> [suppress_function]
> symbol_name_regexp = rte_log
> [suppress_function]
> symbol_name = rte_openlog_stream
> [suppress_function]
> symbol_name = rte_vlog
>
> But this is not a good solution because we would be losing checks on
> them for the rest of the v23 ABI life.
>
Right, I got error messages from the CI job for this too, but I also have
no idea how to work around this. Perhaps we only get to move content
between libraries when we do an ABI bump? Seems a bit restrictive, though.
/Bruce
next prev parent reply other threads:[~2023-01-23 14:24 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-29 15:18 [RFC PATCH 0/3] Split logging " Bruce Richardson
2022-08-29 15:18 ` [RFC PATCH 1/3] os: begin separating some OS compatibility from EAL Bruce Richardson
2022-08-29 18:57 ` Morten Brørup
2022-08-30 8:41 ` Bruce Richardson
2022-08-30 8:42 ` David Marchand
2022-08-30 9:59 ` Bruce Richardson
2022-08-29 15:19 ` [RFC PATCH 2/3] log: separate logging functions out of EAL Bruce Richardson
2022-08-29 15:19 ` [RFC PATCH 3/3] telemetry: use standard logging Bruce Richardson
2023-01-13 16:19 ` [RFC PATCH v2 0/3] Split logging functionality out of EAL Bruce Richardson
2023-01-13 16:19 ` [RFC PATCH v2 1/3] eal/windows: move fnmatch function to header file Bruce Richardson
2023-01-13 16:41 ` Morten Brørup
2023-01-13 17:01 ` Bruce Richardson
2023-01-13 17:31 ` Tyler Retzlaff
2023-01-13 17:37 ` Bruce Richardson
2023-01-13 16:20 ` [RFC PATCH v2 2/3] log: separate logging functions out of EAL Bruce Richardson
2023-01-13 16:20 ` [RFC PATCH v2 3/3] telemetry: use standard logging Bruce Richardson
2023-01-13 20:36 ` [PATCH v3 0/3] Split logging functionality out of EAL Bruce Richardson
2023-01-13 20:36 ` [PATCH v3 1/3] eal/windows: move fnmatch function to header file Bruce Richardson
2023-01-13 20:36 ` [PATCH v3 2/3] log: separate logging functions out of EAL Bruce Richardson
2023-01-13 20:36 ` [PATCH v3 3/3] telemetry: use standard logging Bruce Richardson
2023-01-20 18:21 ` [PATCH v4 0/3] Split logging functionality out of EAL Bruce Richardson
2023-01-20 18:21 ` [PATCH v4 1/3] eal/windows: move fnmatch function to header file Bruce Richardson
2023-01-20 18:21 ` [PATCH v4 2/3] log: separate logging functions out of EAL Bruce Richardson
2023-01-20 18:21 ` [PATCH v4 3/3] telemetry: use standard logging Bruce Richardson
2023-01-22 14:56 ` [PATCH v4 0/3] Split logging functionality out of EAL David Marchand
2023-01-23 14:24 ` Bruce Richardson [this message]
2023-01-23 14:31 ` David Marchand
2023-01-23 14:36 ` Bruce Richardson
2023-01-23 14:42 ` David Marchand
2023-05-18 12:49 ` [PATCH v5 " Bruce Richardson
2023-05-18 12:49 ` [PATCH v5 1/3] eal/windows: move fnmatch function to header file Bruce Richardson
2023-05-18 12:49 ` [PATCH v5 2/3] log: separate logging functions out of EAL Bruce Richardson
2023-05-18 12:49 ` [PATCH v5 3/3] telemetry: use standard logging Bruce Richardson
2023-07-31 10:17 ` [PATCH v6 0/3] Split logging functionality out of EAL Bruce Richardson
2023-07-31 10:17 ` [PATCH v6 1/3] eal/windows: move fnmatch function to header file Bruce Richardson
2023-07-31 10:17 ` [PATCH v6 2/3] log: separate logging functions out of EAL Bruce Richardson
2023-07-31 10:17 ` [PATCH v6 3/3] telemetry: use standard logging Bruce Richardson
2023-07-31 15:38 ` [PATCH v7 0/3] Split logging functionality out of EAL Bruce Richardson
2023-07-31 15:39 ` [PATCH v7 1/3] eal/windows: move fnmatch function to header file Bruce Richardson
2023-08-09 11:18 ` David Marchand
2023-08-09 12:35 ` Bruce Richardson
2023-07-31 15:39 ` [PATCH v7 2/3] log: separate logging functions out of EAL Bruce Richardson
2023-07-31 16:22 ` David Marchand
2023-07-31 16:29 ` Bruce Richardson
2023-08-09 10:00 ` Bruce Richardson
2023-08-09 11:58 ` David Marchand
2023-08-09 12:24 ` David Marchand
2023-08-09 12:32 ` Bruce Richardson
2023-07-31 15:39 ` [PATCH v7 3/3] telemetry: use standard logging Bruce Richardson
2023-08-09 13:35 ` [PATCH v8 0/3] Split logging functionality out of EAL Bruce Richardson
2023-08-09 13:35 ` [PATCH v8 1/3] eal/windows: move fnmatch function to header file Bruce Richardson
2023-08-09 13:35 ` [PATCH v8 2/3] log: separate logging functions out of EAL Bruce Richardson
2023-08-09 13:35 ` [PATCH v8 3/3] telemetry: use standard logging Bruce Richardson
2023-08-11 12:46 ` [PATCH v8 0/3] Split logging functionality out of EAL David Marchand
2023-08-11 12:59 ` Bruce Richardson
2023-09-01 11:25 ` Thomas Monjalon
2023-09-01 12:26 ` Morten Brørup
2023-10-23 7:37 ` David Marchand
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