bf66003b51
The current meson option 'machine' should only specify the ISA, which is not sufficient for Arm, where setting ISA implies other settings as well (and is used in Arm configuration as such). Use the existing 'platform' meson option to differentiate the type of the build (native/generic) and set ISA accordingly, unless the user chooses to override it with a new option, 'cpu_instruction_set'. The 'machine' option set the ISA in x86 builds and set native/default 'build type' in aarch64 builds. These two new variables, 'platform' and 'cpu_instruction_set', now properly set both ISA and build type for all architectures in a uniform manner. The 'machine' option also doesn't describe very well what it sets. The new option, 'cpu_instruction_set', is much more descriptive. Keep 'machine' for backwards compatibility. Signed-off-by: Juraj Linkeš <juraj.linkes@pantheon.tech> Acked-by: Bruce Richardson <bruce.richardson@intel.com>
35 lines
1.5 KiB
Meson
35 lines
1.5 KiB
Meson
# SPDX-License-Identifier: BSD-3-Clause
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# Copyright(c) 2018 Luca Boccassi <bluca@debian.org>
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if not dpdk_conf.get('RTE_ARCH_64')
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error('Only 64-bit compiles are supported for this platform type')
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endif
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dpdk_conf.set('RTE_ARCH', 'ppc_64')
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dpdk_conf.set('RTE_ARCH_PPC_64', 1)
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# RHEL 7.x uses gcc 4.8.X which doesn't generate code for Power 9 CPUs,
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# though it will detect a Power 9 CPU when the "-mcpu=native" argument
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# is used, resulting in a build failure.
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power9_supported = cc.has_argument('-mcpu=power9')
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if not power9_supported
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cpu_instruction_set = 'power8'
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machine_args = ['-mcpu=power8', '-mtune=power8']
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dpdk_conf.set('RTE_MACHINE','power8')
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endif
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# Certain POWER9 systems can scale as high as 1536 LCORES, but setting such a
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# high value can waste memory, cause timeouts in time limited autotests, and is
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# unlikely to be used in many production situations. Similarly, keeping the
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# default 64 LCORES seems too small as most POWER9 dual socket systems will have
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# at least 128 LCORES available. Set RTE_MAX_LCORE to 128 for POWER systems as
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# a compromise.
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dpdk_conf.set('RTE_MAX_LCORE', 128)
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# POWER systems do not allocate NUMA nodes sequentially. A dual socket system
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# will have CPUs associated with NUMA nodes 0 & 8, so ensure that the second
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# NUMA node will be supported by setting RTE_MAX_NUMA_NODES to 16. High end
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# systems can scale even higher with as many as 32 NUMA nodes.
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dpdk_conf.set('RTE_MAX_NUMA_NODES', 16)
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dpdk_conf.set('RTE_CACHE_LINE_SIZE', 128)
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