[RFC PATCH 0/3] Split logging out of EAL

[Bruce Richardson <bruce.richardson@intel.com>]

Following recent discussion on-list about EAL needing to be broken down
a bit, here is an RFC where logging functionality is split out of EAL
into a separate library. Most parts of this work is fairly straight
forward - there are only two complications:

1. The logging functions use "fnmatch", which is not available on
   windows, and so has a compatibility fallback in EAL.

2. There are individual logging files for each supported OS.

For #1, there were really two options to avoid the circular dependency -
either move fnmatch into the log library, or to create a new lower-level
library for such back function fallbacks. For this RFC I've taken the
second option as a better solution. Ideally, more of EAL compat
functions should be moved to such a library if we create one, but for
now, it's only the one function that was needed to be moved.

For #2, this was fixed using standard naming and the build system to
only build the appropriately named file for each OS. The alternative of
creating a subdir per-OS seems overkill for the single-file situation.

NOTE: this is an early RFC based on work I did some time back, and is
intended just to inspire further discussion and work about splitting
EAL, more than necessarily being a patchset for future merging.

Bruce Richardson (3):
  os: begin separating some OS compatibility from EAL
  log: separate logging functions out of EAL
  telemetry: use standard logging

 lib/eal/common/eal_private.h                  |  7 ----
 lib/eal/common/meson.build                    |  1 -
 lib/eal/freebsd/eal.c                         |  6 +--
 lib/eal/include/meson.build                   |  1 -
 lib/eal/linux/eal.c                           |  6 +--
 lib/eal/linux/meson.build                     |  1 -
 lib/eal/meson.build                           |  2 +-
 lib/eal/version.map                           | 17 --------
 lib/eal/windows/meson.build                   |  2 -
 lib/kvargs/meson.build                        |  3 +-
 lib/{eal/common => log}/eal_common_log.c      |  1 -
 lib/{eal/common => log}/eal_log.h             | 11 ++++++
 .../linux/eal_log.c => log/eal_log_linux.c}   |  0
 .../eal_log.c => log/eal_log_windows.c}       |  0
 lib/log/meson.build                           |  8 ++++
 lib/{eal/include => log}/rte_log.h            |  0
 lib/log/version.map                           | 39 +++++++++++++++++++
 lib/meson.build                               | 12 +++---
 lib/os/freebsd/fnmatch.c                      |  3 ++
 lib/os/linux/fnmatch.c                        |  3 ++
 lib/os/meson.build                            |  8 ++++
 lib/os/os.c                                   |  3 ++
 lib/os/version.map                            |  7 ++++
 lib/{eal => os}/windows/fnmatch.c             |  0
 .../windows/include => os/windows}/fnmatch.h  |  0
 lib/telemetry/meson.build                     |  3 +-
 lib/telemetry/telemetry.c                     | 12 +++---
 lib/telemetry/telemetry_internal.h            |  3 +-
 28 files changed, 100 insertions(+), 59 deletions(-)
 rename lib/{eal/common => log}/eal_common_log.c (99%)
 rename lib/{eal/common => log}/eal_log.h (80%)
 rename lib/{eal/linux/eal_log.c => log/eal_log_linux.c} (100%)
 rename lib/{eal/windows/eal_log.c => log/eal_log_windows.c} (100%)
 create mode 100644 lib/log/meson.build
 rename lib/{eal/include => log}/rte_log.h (100%)
 create mode 100644 lib/log/version.map
 create mode 100644 lib/os/freebsd/fnmatch.c
 create mode 100644 lib/os/linux/fnmatch.c
 create mode 100644 lib/os/meson.build
 create mode 100644 lib/os/os.c
 create mode 100644 lib/os/version.map
 rename lib/{eal => os}/windows/fnmatch.c (100%)
 rename lib/{eal/windows/include => os/windows}/fnmatch.h (100%)

--
2.34.1