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| author | Alexander Gordeev <agordeev@linux.ibm.com> | 2020-08-04 21:35:50 +0300 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2020-08-11 19:16:55 +0300 |
| commit | b450eeb0c973ed4125ea91e35613f029337fd28b (patch) | |
| tree | 24f6b714e8f7e1f51dd7ac51347a24d2c8ee43c3 /arch/s390/kernel | |
| parent | 12bbf0962afa903321f28c454d7b667199ae55da (diff) | |
| download | linux-b450eeb0c973ed4125ea91e35613f029337fd28b.tar.xz | |
s390/numa: move code to arch/s390/kernel
Move all code from arch/s390/numa/ to arch/s390/kernel/
since numa.c is the only source file and all others were
deleted with the fake NUMA support removal.
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390/kernel')
| -rw-r--r-- | arch/s390/kernel/Makefile | 1 | ||||
| -rw-r--r-- | arch/s390/kernel/numa.c | 42 |
2 files changed, 43 insertions, 0 deletions
diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile index a8f136943deb..efca70970761 100644 --- a/arch/s390/kernel/Makefile +++ b/arch/s390/kernel/Makefile @@ -49,6 +49,7 @@ CFLAGS_REMOVE_nospec-branch.o += $(CC_FLAGS_EXPOLINE) obj-$(CONFIG_MODULES) += module.o obj-$(CONFIG_SCHED_TOPOLOGY) += topology.o +obj-$(CONFIG_NUMA) += numa.o obj-$(CONFIG_AUDIT) += audit.o compat-obj-$(CONFIG_AUDIT) += compat_audit.o obj-$(CONFIG_COMPAT) += compat_linux.o compat_signal.o diff --git a/arch/s390/kernel/numa.c b/arch/s390/kernel/numa.c new file mode 100644 index 000000000000..51c5a9f6e525 --- /dev/null +++ b/arch/s390/kernel/numa.c @@ -0,0 +1,42 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * NUMA support for s390 + * + * Implement NUMA core code. + * + * Copyright IBM Corp. 2015 + */ + +#include <linux/kernel.h> +#include <linux/mmzone.h> +#include <linux/cpumask.h> +#include <linux/memblock.h> +#include <linux/node.h> +#include <asm/numa.h> + +struct pglist_data *node_data[MAX_NUMNODES]; +EXPORT_SYMBOL(node_data); + +void __init numa_setup(void) +{ + int nid; + + nodes_clear(node_possible_map); + node_set(0, node_possible_map); + node_set_online(0); + for (nid = 0; nid < MAX_NUMNODES; nid++) { + NODE_DATA(nid) = memblock_alloc(sizeof(pg_data_t), 8); + if (!NODE_DATA(nid)) + panic("%s: Failed to allocate %zu bytes align=0x%x\n", + __func__, sizeof(pg_data_t), 8); + } + NODE_DATA(0)->node_spanned_pages = memblock_end_of_DRAM() >> PAGE_SHIFT; + NODE_DATA(0)->node_id = 0; +} + +static int __init numa_init_late(void) +{ + register_one_node(0); + return 0; +} +arch_initcall(numa_init_late); |