Skip to content
Navigation Menu
Toggle navigation
Sign in
In this repository
All GitHub Enterprise
↵
Jump to
↵
No suggested jump to results
In this repository
All GitHub Enterprise
↵
Jump to
↵
In this organization
All GitHub Enterprise
↵
Jump to
↵
In this repository
All GitHub Enterprise
↵
Jump to
↵
Sign in
Reseting focus
You signed in with another tab or window.
Reload
to refresh your session.
You signed out in another tab or window.
Reload
to refresh your session.
You switched accounts on another tab or window.
Reload
to refresh your session.
Dismiss alert
{{ message }}
mariux64
/
linux
Public
Notifications
You must be signed in to change notification settings
Fork
0
Star
0
Code
Issues
2
Pull requests
0
Actions
Projects
0
Wiki
Security
Insights
Additional navigation options
Code
Issues
Pull requests
Actions
Projects
Wiki
Security
Insights
Files
c1ff843
Documentation
arch
alpha
arc
arm
arm64
avr32
blackfin
c6x
cris
frv
hexagon
ia64
m32r
m68k
metag
microblaze
mips
mn10300
openrisc
parisc
powerpc
s390
score
sh
sparc
tile
um
unicore32
x86
boot
configs
crypto
ia32
include
kernel
kvm
lguest
lib
math-emu
mm
kmemcheck
Makefile
amdtopology.c
dump_pagetables.c
extable.c
fault.c
gup.c
highmem_32.c
hugetlbpage.c
init.c
init_32.c
init_64.c
iomap_32.c
ioremap.c
kmmio.c
memtest.c
mm_internal.h
mmap.c
mmio-mod.c
numa.c
numa_32.c
numa_64.c
numa_emulation.c
numa_internal.h
pageattr-test.c
pageattr.c
pat.c
pat_internal.h
pat_rbtree.c
pf_in.c
pf_in.h
pgtable.c
pgtable_32.c
physaddr.c
physaddr.h
setup_nx.c
srat.c
testmmiotrace.c
tlb.c
net
oprofile
pci
platform
power
realmode
syscalls
tools
um
vdso
video
xen
.gitignore
Kbuild
Kconfig
Kconfig.cpu
Kconfig.debug
Makefile
Makefile.um
Makefile_32.cpu
xtensa
.gitignore
Kconfig
block
crypto
drivers
firmware
fs
include
init
ipc
kernel
lib
mm
net
samples
scripts
security
sound
tools
usr
virt
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile
README
REPORTING-BUGS
Breadcrumbs
linux
/
arch
/
x86
/
mm
/
srat.c
Copy path
Blame
Blame
Latest commit
History
History
216 lines (188 loc) · 5.22 KB
Breadcrumbs
linux
/
arch
/
x86
/
mm
/
srat.c
Top
File metadata and controls
Code
Blame
216 lines (188 loc) · 5.22 KB
Raw
/* * ACPI 3.0 based NUMA setup * Copyright 2004 Andi Kleen, SuSE Labs. * * Reads the ACPI SRAT table to figure out what memory belongs to which CPUs. * * Called from acpi_numa_init while reading the SRAT and SLIT tables. * Assumes all memory regions belonging to a single proximity domain * are in one chunk. Holes between them will be included in the node. */ #include <linux/kernel.h> #include <linux/acpi.h> #include <linux/mmzone.h> #include <linux/bitmap.h> #include <linux/module.h> #include <linux/topology.h> #include <linux/bootmem.h> #include <linux/memblock.h> #include <linux/mm.h> #include <asm/proto.h> #include <asm/numa.h> #include <asm/e820.h> #include <asm/apic.h> #include <asm/uv/uv.h> int acpi_numa __initdata; static __init int setup_node(int pxm) { return acpi_map_pxm_to_node(pxm); } static __init void bad_srat(void) { printk(KERN_ERR "SRAT: SRAT not used.\n"); acpi_numa = -1; } static __init inline int srat_disabled(void) { return acpi_numa < 0; } /* * Callback for SLIT parsing. pxm_to_node() returns NUMA_NO_NODE for * I/O localities since SRAT does not list them. I/O localities are * not supported at this point. */ void __init acpi_numa_slit_init(struct acpi_table_slit *slit) { int i, j; for (i = 0; i < slit->locality_count; i++) { if (pxm_to_node(i) == NUMA_NO_NODE) continue; for (j = 0; j < slit->locality_count; j++) { if (pxm_to_node(j) == NUMA_NO_NODE) continue; numa_set_distance(pxm_to_node(i), pxm_to_node(j), slit->entry[slit->locality_count * i + j]); } } } /* Callback for Proximity Domain -> x2APIC mapping */ void __init acpi_numa_x2apic_affinity_init(struct acpi_srat_x2apic_cpu_affinity *pa) { int pxm, node; int apic_id; if (srat_disabled()) return; if (pa->header.length < sizeof(struct acpi_srat_x2apic_cpu_affinity)) { bad_srat(); return; } if ((pa->flags & ACPI_SRAT_CPU_ENABLED) == 0) return; pxm = pa->proximity_domain; apic_id = pa->apic_id; if (!apic->apic_id_valid(apic_id)) { printk(KERN_INFO "SRAT: PXM %u -> X2APIC 0x%04x ignored\n", pxm, apic_id); return; } node = setup_node(pxm); if (node < 0) { printk(KERN_ERR "SRAT: Too many proximity domains %x\n", pxm); bad_srat(); return; } if (apic_id >= MAX_LOCAL_APIC) { printk(KERN_INFO "SRAT: PXM %u -> APIC 0x%04x -> Node %u skipped apicid that is too big\n", pxm, apic_id, node); return; } set_apicid_to_node(apic_id, node); node_set(node, numa_nodes_parsed); acpi_numa = 1; printk(KERN_INFO "SRAT: PXM %u -> APIC 0x%04x -> Node %u\n", pxm, apic_id, node); } /* Callback for Proximity Domain -> LAPIC mapping */ void __init acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa) { int pxm, node; int apic_id; if (srat_disabled()) return; if (pa->header.length != sizeof(struct acpi_srat_cpu_affinity)) { bad_srat(); return; } if ((pa->flags & ACPI_SRAT_CPU_ENABLED) == 0) return; pxm = pa->proximity_domain_lo; if (acpi_srat_revision >= 2) pxm |= *((unsigned int*)pa->proximity_domain_hi) << 8; node = setup_node(pxm); if (node < 0) { printk(KERN_ERR "SRAT: Too many proximity domains %x\n", pxm); bad_srat(); return; } if (get_uv_system_type() >= UV_X2APIC) apic_id = (pa->apic_id << 8) | pa->local_sapic_eid; else apic_id = pa->apic_id; if (apic_id >= MAX_LOCAL_APIC) { printk(KERN_INFO "SRAT: PXM %u -> APIC 0x%02x -> Node %u skipped apicid that is too big\n", pxm, apic_id, node); return; } set_apicid_to_node(apic_id, node); node_set(node, numa_nodes_parsed); acpi_numa = 1; printk(KERN_INFO "SRAT: PXM %u -> APIC 0x%02x -> Node %u\n", pxm, apic_id, node); } #ifdef CONFIG_MEMORY_HOTPLUG static inline int save_add_info(void) {return 1;} #else static inline int save_add_info(void) {return 0;} #endif /* Callback for parsing of the Proximity Domain <-> Memory Area mappings */ int __init acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma) { u64 start, end; u32 hotpluggable; int node, pxm; if (srat_disabled()) goto out_err; if (ma->header.length != sizeof(struct acpi_srat_mem_affinity)) goto out_err_bad_srat; if ((ma->flags & ACPI_SRAT_MEM_ENABLED) == 0) goto out_err; hotpluggable = ma->flags & ACPI_SRAT_MEM_HOT_PLUGGABLE; if (hotpluggable && !save_add_info()) goto out_err; start = ma->base_address; end = start + ma->length; pxm = ma->proximity_domain; if (acpi_srat_revision <= 1) pxm &= 0xff; node = setup_node(pxm); if (node < 0) { printk(KERN_ERR "SRAT: Too many proximity domains.\n"); goto out_err_bad_srat; } if (numa_add_memblk(node, start, end) < 0) goto out_err_bad_srat; node_set(node, numa_nodes_parsed); pr_info("SRAT: Node %u PXM %u [mem %#010Lx-%#010Lx]%s\n", node, pxm, (unsigned long long) start, (unsigned long long) end - 1, hotpluggable ? " hotplug" : ""); /* Mark hotplug range in memblock. */ if (hotpluggable && memblock_mark_hotplug(start, ma->length)) pr_warn("SRAT: Failed to mark hotplug range [mem %#010Lx-%#010Lx] in memblock\n", (unsigned long long)start, (unsigned long long)end - 1); return 0; out_err_bad_srat: bad_srat(); out_err: return -1; } void __init acpi_numa_arch_fixup(void) {} int __init x86_acpi_numa_init(void) { int ret; ret = acpi_numa_init(); if (ret < 0) return ret; return srat_disabled() ? -EINVAL : 0; }
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
You can’t perform that action at this time.