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Add function setup_numa_memblock() for setting up a memory layout with multiple NUMA nodes in a previously allocated dummy physical memory. This function can be used in place of setup_memblock() in tests that need to simulate a NUMA system. setup_numa_memblock(): - allows for setting up a memory layout by specifying the fraction of MEM_SIZE in each node Set CONFIG_NODES_SHIFT to 4 when building with NUMA=1 to allow for up to 16 NUMA nodes. Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Rebecca Mckeever <remckee0@gmail.com> Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Link: https://lore.kernel.org/r/4566d816a85f009268d4858d1ef06c7571a960f9.1663046060.git.remckee0@gmail.com
20 lines
460 B
Makefile
20 lines
460 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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# Definitions for user-provided arguments
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# Simulate CONFIG_NUMA=y
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ifeq ($(NUMA), 1)
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CFLAGS += -D CONFIG_NUMA -D CONFIG_NODES_SHIFT=4
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endif
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# Use 32 bit physical addresses.
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# Remember to install 32-bit version of dependencies.
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ifeq ($(32BIT_PHYS_ADDR_T), 1)
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CFLAGS += -m32 -U CONFIG_PHYS_ADDR_T_64BIT
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LDFLAGS += -m32
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endif
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# Enable memblock_dbg() messages
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ifeq ($(MEMBLOCK_DEBUG), 1)
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CFLAGS += -D MEMBLOCK_DEBUG
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endif
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