-----Original Message-----
From: dev <redacted> On Behalf Of Juraj Linkeš
Sent: Wednesday, December 23, 2020 5:17 PM
To: bruce.richardson@intel.com; Ruifeng.Wang@arm.com;
Honnappa.Nagarahalli@arm.com; Phil.Yang@arm.com;
vcchunga@amazon.com; Dharmik.Thakkar@arm.com;
jerinjacobk@gmail.com; hemant.agrawal@nxp.com;
ajit.khaparde@broadcom.com; ferruh.yigit@intel.com
Cc: dev@dpdk.org; Juraj Linkeš <redacted>
Subject: [dpdk-dev] [PATCH v14 00/12] Arm build options rework

The current way of specifying Arm configuration options is insufficient
since we can't identify the SoC we're building for from the MIDR
information. For example, we can't distinguish between N1SDP,
Graviton2
or Ampere Altra.

Add a way to specify the cpu count and numa node count for cross
builds
and aarch64 -> aarch64 (SoC) builds.

We also want to be able to disable which drivers (and possibly
libraries) are built without user input. This is useful when building:
1. on an SoC that is slow and we want to build only what is necessary
 without the user having to check which libraries they have installed
2. a cross build on a fast aarch64 machine but with target SoC which
 differs in capabilities or libraries.
This is achieved by specifying the drivers in SoC configuration.

Among libraries, only libnuma can be now disabled.

Also add an optional way to discover cpu count a numa node count. Fix
-Dmax_lcores and -Dmax_numa_nodes for arm builds.

The current implementation adds/supports the following:
* x86 -> aarch64 cross build with added config options/disabled
 drivers/libs
* aarch64 -> aarch64 builds for a different SoCs using meson -Darm_soc
 option or using a cross file
* max numa nodes and max lcore may be specified on the command
line to
 overwrite the values for any (native, SoC or cross) build

v2:
Major rework of the whole series.

v3:
Added numa and core count defaults for x86 default build.
Removed numa and core count defaults. Now requiring defaults to be
specified in a cross file or on the cmdline.
Added FreeBDS support for numa count discovery.

v4:
Make automatic numa and cpu counts discovery optional.

v5:
Split the refactor patch into smaller patches.
Simplify buildtools/get_numa_count.py.
Add more explanation to cover letter.

v6:
Apply cross file options arch agnostically, not just in Arm cross
builds.
Streamline Arm build setup and machine args: always use native args in
native builds, require implementer ID and part number for cross builds.

v7:
Arm config options are now organized in one dictionary.
Removed unsupported implementers and removed fallback to generic
implementer/part number for unknown implementer/part number.
Added meson config option arm_soc which can be used to specify
configuration to be used, useful for aarch64 -> aarch64 builds.

v8:
Rebase.

v9:
Split SoC and implementer dictionaries into smaller parts.
Fixed DPAA and ARMADA SoC configuration.
Added documentation about supported SoCs.

v10:
Added a commit that fixes Graviton2 clang build failures in native
build.

v11:
Rebase.

v12:
Fixed dpaa and armada cross builds in generic build commit.

v13:
Removed two commits which were not arm-specific:
1. build: alias default build as generic
2. build: optional NUMA and cpu counts detection
Also minor adjustments to commit messages in:
1. build: isolate configuration for Arm generic build
2. build: disable drivers in Arm builds

v14:
Resent for retesting (because of suspected false negative).

Series Acked-by: Jerin Jacob [off-list ref]
Series Tested-by: Jerin Jacob [off-list ref]
Series Tested-by: Dharmik Thakkar [off-list ref]
Series Tested-by: Vimal Chungath [off-list ref]

Series Tested-by: Pavan Nikhilesh [off-list ref]

Also, I believe we need to take a look at ARCH_SOC_ID support 
coming up in 5.9 kernel.

https://lore.kernel.org/linux-arm-kernel/20200506164411.3284-1-sudeep.holla@arm.com/ (local)

Juraj Linkeš (12):
 build: rename Arm build variables
 build: remove unused or superfluous variables
 build: reformat and move Arm config and comments
 build: simplify how Arm flags are processed
 build: organize Arm config into dict
 build: isolate configuration for Arm generic build
 build: use native machine args in Arm native build
 build: add core and NUMA counts to cross files
 build: disable drivers in Arm builds
 build: disable libnuma in cross builds
 build: add Arm SoC meson option
 config: fix Arm implementer and its SoCs

config/arm/arm64_armada_linux_gcc             |   2 +-
config/arm/arm64_armv8_linux_gcc              |  15 +-
config/arm/arm64_bluefield_linux_gcc          |   3 +-
config/arm/arm64_dpaa_linux_gcc               |   2 +-
config/arm/arm64_emag_linux_gcc               |   2 +-
config/arm/arm64_graviton2_linux_gcc          |   3 +-
config/arm/arm64_n1sdp_linux_gcc              |   3 +-
config/arm/arm64_octeontx2_linux_gcc          |   3 +-
config/arm/arm64_stingray_linux_gcc           |   3 +-
config/arm/arm64_thunderx2_linux_gcc          |   3 +-
..._linux_gcc => arm64_thunderxt88_linux_gcc} |   2 +-
config/arm/meson.build                        | 502 ++++++++++++------
config/meson.build                            |  34 +-
.../linux_gsg/cross_build_dpdk_for_arm64.rst  |  30 ++
drivers/meson.build                           |   6 +-
meson.build                                   |   1 +
meson_options.txt                             |   2 +
17 files changed, 413 insertions(+), 203 deletions(-)
rename config/arm/{arm64_thunderx_linux_gcc =>
arm64_thunderxt88_linux_gcc} (92%)

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2.20.1