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NUMA: move numa related code to new file numa.c 

Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: Andre Przywara <andre.przywara@amd.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>

MST: comment tweaks
This commit is contained in:
Wanlong Gao 2014-05-14 17:43:05 +08:00 committed by Michael S. Tsirkin
parent edd8db8705
commit 96d0e26c23
8 changed files with 192 additions and 156 deletions
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2
Makefile.target
View File

@ -119,7 +119,7 @@ endif #CONFIG_BSD_USER
#########################################################
# System emulator target
ifdef CONFIG_SOFTMMU
obj-y += arch_init.o cpus.o monitor.o gdbstub.o balloon.o ioport.o
obj-y += arch_init.o cpus.o monitor.o gdbstub.o balloon.o ioport.o numa.o
obj-y += qtest.o
obj-y += hw/
obj-$(CONFIG_FDT) += device_tree.o

14
cpus.c
View File

@ -1312,20 +1312,6 @@ static void tcg_exec_all(void)
exit_request = 0;
}
void set_numa_modes(void)
{
CPUState *cpu;
int i;
CPU_FOREACH(cpu) {
for (i = 0; i < nb_numa_nodes; i++) {
if (test_bit(cpu->cpu_index, node_cpumask[i])) {
cpu->numa_node = i;
}
}
}
}
void list_cpus(FILE *f, fprintf_function cpu_fprintf, const char *optarg)
{
/* XXX: implement xxx_cpu_list for targets that still miss it */

2
include/exec/cpu-all.h
View File

@ -297,8 +297,6 @@ CPUArchState *cpu_copy(CPUArchState *env);
/* memory API */
extern ram_addr_t ram_size;
/* RAM is pre-allocated and passed into qemu_ram_alloc_from_ptr */
#define RAM_PREALLOC_MASK (1 << 0)

2
include/exec/cpu-common.h
View File

@ -45,6 +45,8 @@ typedef uintptr_t ram_addr_t;
# define RAM_ADDR_FMT "%" PRIxPTR
#endif
extern ram_addr_t ram_size;
/* memory API */
typedef void CPUWriteMemoryFunc(void *opaque, hwaddr addr, uint32_t value);

1
include/sysemu/cpus.h
View File

@ -23,7 +23,6 @@ extern int smp_threads;
#define smp_threads 1
#endif
void set_numa_modes(void);
void list_cpus(FILE *f, fprintf_function cpu_fprintf, const char *optarg);
#endif

3
include/sysemu/sysemu.h
View File

@ -144,6 +144,9 @@ extern QEMUClockType rtc_clock;
extern int nb_numa_nodes;
extern uint64_t node_mem[MAX_NODES];
extern unsigned long *node_cpumask[MAX_NODES];
void numa_add(const char *optarg);
void set_numa_nodes(void);
void set_numa_modes(void);
#define MAX_OPTION_ROMS 16
typedef struct QEMUOptionRom {

185
numa.c Normal file
View File

@ -0,0 +1,185 @@
/*
* NUMA parameter parsing routines
*
* Copyright (c) 2014 Fujitsu Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "sysemu/sysemu.h"
#include "exec/cpu-common.h"
#include "qemu/bitmap.h"
#include "qom/cpu.h"
static void numa_node_parse_cpus(int nodenr, const char *cpus)
{
char *endptr;
unsigned long long value, endvalue;
/* Empty CPU range strings will be considered valid, they will simply
* not set any bit in the CPU bitmap.
*/
if (!*cpus) {
return;
}
if (parse_uint(cpus, &value, &endptr, 10) < 0) {
goto error;
}
if (*endptr == '-') {
if (parse_uint_full(endptr + 1, &endvalue, 10) < 0) {
goto error;
}
} else if (*endptr == '\0') {
endvalue = value;
} else {
goto error;
}
if (endvalue >= MAX_CPUMASK_BITS) {
endvalue = MAX_CPUMASK_BITS - 1;
fprintf(stderr,
"qemu: NUMA: A max of %d VCPUs are supported\n",
MAX_CPUMASK_BITS);
}
if (endvalue < value) {
goto error;
}
bitmap_set(node_cpumask[nodenr], value, endvalue-value+1);
return;
error:
fprintf(stderr, "qemu: Invalid NUMA CPU range: %s\n", cpus);
exit(1);
}
void numa_add(const char *optarg)
{
char option[128];
char *endptr;
unsigned long long nodenr;
optarg = get_opt_name(option, 128, optarg, ',');
if (*optarg == ',') {
optarg++;
}
if (!strcmp(option, "node")) {
if (nb_numa_nodes >= MAX_NODES) {
fprintf(stderr, "qemu: too many NUMA nodes\n");
exit(1);
}
if (get_param_value(option, 128, "nodeid", optarg) == 0) {
nodenr = nb_numa_nodes;
} else {
if (parse_uint_full(option, &nodenr, 10) < 0) {
fprintf(stderr, "qemu: Invalid NUMA nodeid: %s\n", option);
exit(1);
}
}
if (nodenr >= MAX_NODES) {
fprintf(stderr, "qemu: invalid NUMA nodeid: %llu\n", nodenr);
exit(1);
}
if (get_param_value(option, 128, "mem", optarg) == 0) {
node_mem[nodenr] = 0;
} else {
int64_t sval;
sval = strtosz(option, &endptr);
if (sval < 0 || *endptr) {
fprintf(stderr, "qemu: invalid numa mem size: %s\n", optarg);
exit(1);
}
node_mem[nodenr] = sval;
}
if (get_param_value(option, 128, "cpus", optarg) != 0) {
numa_node_parse_cpus(nodenr, option);
}
nb_numa_nodes++;
} else {
fprintf(stderr, "Invalid -numa option: %s\n", option);
exit(1);
}
}
void set_numa_nodes(void)
{
if (nb_numa_nodes > 0) {
int i;
if (nb_numa_nodes > MAX_NODES) {
nb_numa_nodes = MAX_NODES;
}
/* If no memory size if given for any node, assume the default case
* and distribute the available memory equally across all nodes
*/
for (i = 0; i < nb_numa_nodes; i++) {
if (node_mem[i] != 0) {
break;
}
}
if (i == nb_numa_nodes) {
uint64_t usedmem = 0;
/* On Linux, the each node's border has to be 8MB aligned,
* the final node gets the rest.
*/
for (i = 0; i < nb_numa_nodes - 1; i++) {
node_mem[i] = (ram_size / nb_numa_nodes) & ~((1 << 23UL) - 1);
usedmem += node_mem[i];
}
node_mem[i] = ram_size - usedmem;
}
for (i = 0; i < nb_numa_nodes; i++) {
if (!bitmap_empty(node_cpumask[i], MAX_CPUMASK_BITS)) {
break;
}
}
/* assigning the VCPUs round-robin is easier to implement, guest OSes
* must cope with this anyway, because there are BIOSes out there in
* real machines which also use this scheme.
*/
if (i == nb_numa_nodes) {
for (i = 0; i < max_cpus; i++) {
set_bit(i, node_cpumask[i % nb_numa_nodes]);
}
}
}
}
void set_numa_modes(void)
{
CPUState *cpu;
int i;
CPU_FOREACH(cpu) {
for (i = 0; i < nb_numa_nodes; i++) {
if (test_bit(cpu->cpu_index, node_cpumask[i])) {
cpu->numa_node = i;
}
}
}
}

139
vl.c
View File

@ -1275,102 +1275,6 @@ char *get_boot_devices_list(size_t *size, bool ignore_suffixes)
return list;
}
static void numa_node_parse_cpus(int nodenr, const char *cpus)
{
char *endptr;
unsigned long long value, endvalue;
/* Empty CPU range strings will be considered valid, they will simply
* not set any bit in the CPU bitmap.
*/
if (!*cpus) {
return;
}
if (parse_uint(cpus, &value, &endptr, 10) < 0) {
goto error;
}
if (*endptr == '-') {
if (parse_uint_full(endptr + 1, &endvalue, 10) < 0) {
goto error;
}
} else if (*endptr == '\0') {
endvalue = value;
} else {
goto error;
}
if (endvalue >= MAX_CPUMASK_BITS) {
endvalue = MAX_CPUMASK_BITS - 1;
fprintf(stderr,
"qemu: NUMA: A max of %d VCPUs are supported\n",
MAX_CPUMASK_BITS);
}
if (endvalue < value) {
goto error;
}
bitmap_set(node_cpumask[nodenr], value, endvalue-value+1);
return;
error:
fprintf(stderr, "qemu: Invalid NUMA CPU range: %s\n", cpus);
exit(1);
}
static void numa_add(const char *optarg)
{
char option[128];
char *endptr;
unsigned long long nodenr;
optarg = get_opt_name(option, 128, optarg, ',');
if (*optarg == ',') {
optarg++;
}
if (!strcmp(option, "node")) {
if (nb_numa_nodes >= MAX_NODES) {
fprintf(stderr, "qemu: too many NUMA nodes\n");
exit(1);
}
if (get_param_value(option, 128, "nodeid", optarg) == 0) {
nodenr = nb_numa_nodes;
} else {
if (parse_uint_full(option, &nodenr, 10) < 0) {
fprintf(stderr, "qemu: Invalid NUMA nodeid: %s\n", option);
exit(1);
}
}
if (nodenr >= MAX_NODES) {
fprintf(stderr, "qemu: invalid NUMA nodeid: %llu\n", nodenr);
exit(1);
}
if (get_param_value(option, 128, "mem", optarg) == 0) {
node_mem[nodenr] = 0;
} else {
int64_t sval;
sval = strtosz(option, &endptr);
if (sval < 0 || *endptr) {
fprintf(stderr, "qemu: invalid numa mem size: %s\n", optarg);
exit(1);
}
node_mem[nodenr] = sval;
}
if (get_param_value(option, 128, "cpus", optarg) != 0) {
numa_node_parse_cpus(nodenr, option);
}
nb_numa_nodes++;
} else {
fprintf(stderr, "Invalid -numa option: %s\n", option);
exit(1);
}
}
static QemuOptsList qemu_smp_opts = {
.name = "smp-opts",
.implied_opt_name = "cpus",
@ -4400,48 +4304,7 @@ int main(int argc, char **argv, char **envp)
default_drive(default_floppy, snapshot, IF_FLOPPY, 0, FD_OPTS);
default_drive(default_sdcard, snapshot, IF_SD, 0, SD_OPTS);
if (nb_numa_nodes > 0) {
int i;
if (nb_numa_nodes > MAX_NODES) {
nb_numa_nodes = MAX_NODES;
}
/* If no memory size if given for any node, assume the default case
* and distribute the available memory equally across all nodes
*/
for (i = 0; i < nb_numa_nodes; i++) {
if (node_mem[i] != 0)
break;
}
if (i == nb_numa_nodes) {
uint64_t usedmem = 0;
/* On Linux, the each node's border has to be 8MB aligned,
* the final node gets the rest.
*/
for (i = 0; i < nb_numa_nodes - 1; i++) {
node_mem[i] = (ram_size / nb_numa_nodes) & ~((1 << 23UL) - 1);
usedmem += node_mem[i];
}
node_mem[i] = ram_size - usedmem;
}
for (i = 0; i < nb_numa_nodes; i++) {
if (!bitmap_empty(node_cpumask[i], MAX_CPUMASK_BITS)) {
break;
}
}
/* assigning the VCPUs round-robin is easier to implement, guest OSes
* must cope with this anyway, because there are BIOSes out there in
* real machines which also use this scheme.
*/
if (i == nb_numa_nodes) {
for (i = 0; i < max_cpus; i++) {
set_bit(i, node_cpumask[i % nb_numa_nodes]);
}
}
}
set_numa_nodes();
if (qemu_opts_foreach(qemu_find_opts("mon"), mon_init_func, NULL, 1) != 0) {
exit(1);