Revision 28c28973
b/Makefile.target | ||
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161 | 161 |
# System emulator target |
162 | 162 |
ifdef CONFIG_SOFTMMU |
163 | 163 |
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obj-y = arch_init.o cpus.o monitor.o machine.o gdbstub.o vl.o |
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164 |
obj-y = arch_init.o cpus.o monitor.o machine.o gdbstub.o vl.o balloon.o
|
|
165 | 165 |
# virtio has to be here due to weird dependency between PCI and virtio-net. |
166 | 166 |
# need to fix this properly |
167 | 167 |
obj-y += virtio-blk.o virtio-balloon.o virtio-net.o virtio-serial-bus.o |
b/balloon.c | ||
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1 |
/* |
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* QEMU System Emulator |
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* |
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* Copyright (c) 2003-2008 Fabrice Bellard |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this software and associated documentation files (the "Software"), to deal |
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* in the Software without restriction, including without limitation the rights |
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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* copies of the Software, and to permit persons to whom the Software is |
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* furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in |
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* all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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* THE SOFTWARE. |
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*/ |
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#include "sysemu.h" |
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#include "monitor.h" |
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#include "qjson.h" |
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#include "qint.h" |
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#include "cpu-common.h" |
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#include "kvm.h" |
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#include "balloon.h" |
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static QEMUBalloonEvent *qemu_balloon_event; |
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void *qemu_balloon_event_opaque; |
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void qemu_add_balloon_handler(QEMUBalloonEvent *func, void *opaque) |
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{ |
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qemu_balloon_event = func; |
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qemu_balloon_event_opaque = opaque; |
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} |
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|
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int qemu_balloon(ram_addr_t target, MonitorCompletion cb, void *opaque) |
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{ |
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if (qemu_balloon_event) { |
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qemu_balloon_event(qemu_balloon_event_opaque, target, cb, opaque); |
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return 1; |
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} else { |
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return 0; |
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} |
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} |
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int qemu_balloon_status(MonitorCompletion cb, void *opaque) |
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{ |
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if (qemu_balloon_event) { |
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qemu_balloon_event(qemu_balloon_event_opaque, 0, cb, opaque); |
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return 1; |
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} else { |
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return 0; |
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} |
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} |
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static void print_balloon_stat(const char *key, QObject *obj, void *opaque) |
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{ |
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Monitor *mon = opaque; |
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if (strcmp(key, "actual")) |
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monitor_printf(mon, ",%s=%" PRId64, key, |
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qint_get_int(qobject_to_qint(obj))); |
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} |
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void monitor_print_balloon(Monitor *mon, const QObject *data) |
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{ |
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QDict *qdict; |
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qdict = qobject_to_qdict(data); |
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if (!qdict_haskey(qdict, "actual")) |
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return; |
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monitor_printf(mon, "balloon: actual=%" PRId64, |
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qdict_get_int(qdict, "actual") >> 20); |
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qdict_iter(qdict, print_balloon_stat, mon); |
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monitor_printf(mon, "\n"); |
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} |
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/** |
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* do_info_balloon(): Balloon information |
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* |
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* Make an asynchronous request for balloon info. When the request completes |
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* a QDict will be returned according to the following specification: |
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* |
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* - "actual": current balloon value in bytes |
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* The following fields may or may not be present: |
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* - "mem_swapped_in": Amount of memory swapped in (bytes) |
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* - "mem_swapped_out": Amount of memory swapped out (bytes) |
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* - "major_page_faults": Number of major faults |
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* - "minor_page_faults": Number of minor faults |
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* - "free_mem": Total amount of free and unused memory (bytes) |
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* - "total_mem": Total amount of available memory (bytes) |
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* |
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* Example: |
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* |
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* { "actual": 1073741824, "mem_swapped_in": 0, "mem_swapped_out": 0, |
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* "major_page_faults": 142, "minor_page_faults": 239245, |
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* "free_mem": 1014185984, "total_mem": 1044668416 } |
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*/ |
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int do_info_balloon(Monitor *mon, MonitorCompletion cb, void *opaque) |
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{ |
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int ret; |
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if (kvm_enabled() && !kvm_has_sync_mmu()) { |
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qerror_report(QERR_KVM_MISSING_CAP, "synchronous MMU", "balloon"); |
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return -1; |
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} |
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ret = qemu_balloon_status(cb, opaque); |
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if (!ret) { |
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qerror_report(QERR_DEVICE_NOT_ACTIVE, "balloon"); |
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return -1; |
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} |
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return 0; |
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} |
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/** |
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* do_balloon(): Request VM to change its memory allocation |
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*/ |
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int do_balloon(Monitor *mon, const QDict *params, |
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MonitorCompletion cb, void *opaque) |
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{ |
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int ret; |
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if (kvm_enabled() && !kvm_has_sync_mmu()) { |
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qerror_report(QERR_KVM_MISSING_CAP, "synchronous MMU", "balloon"); |
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return -1; |
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} |
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ret = qemu_balloon(qdict_get_int(params, "value"), cb, opaque); |
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if (ret == 0) { |
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qerror_report(QERR_DEVICE_NOT_ACTIVE, "balloon"); |
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return -1; |
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} |
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cb(opaque, NULL); |
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return 0; |
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} |
b/balloon.h | ||
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14 | 14 |
#ifndef _QEMU_BALLOON_H |
15 | 15 |
#define _QEMU_BALLOON_H |
16 | 16 |
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#include "monitor.h" |
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typedef void (QEMUBalloonEvent)(void *opaque, ram_addr_t target, |
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MonitorCompletion cb, void *cb_data); |
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|
... | ... | |
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24 | 26 |
int qemu_balloon_status(MonitorCompletion cb, void *opaque); |
25 | 27 |
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void monitor_print_balloon(Monitor *mon, const QObject *data); |
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int do_info_balloon(Monitor *mon, MonitorCompletion cb, void *opaque); |
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int do_balloon(Monitor *mon, const QDict *params, |
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MonitorCompletion cb, void *opaque); |
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#endif |
b/monitor.c | ||
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2266 | 2266 |
vm_running, singlestep); |
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} |
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static void print_balloon_stat(const char *key, QObject *obj, void *opaque) |
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{ |
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Monitor *mon = opaque; |
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if (strcmp(key, "actual")) |
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monitor_printf(mon, ",%s=%" PRId64, key, |
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qint_get_int(qobject_to_qint(obj))); |
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} |
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static void monitor_print_balloon(Monitor *mon, const QObject *data) |
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{ |
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QDict *qdict; |
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qdict = qobject_to_qdict(data); |
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if (!qdict_haskey(qdict, "actual")) |
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return; |
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monitor_printf(mon, "balloon: actual=%" PRId64, |
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qdict_get_int(qdict, "actual") >> 20); |
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qdict_iter(qdict, print_balloon_stat, mon); |
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monitor_printf(mon, "\n"); |
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} |
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/** |
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* do_info_balloon(): Balloon information |
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* |
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* Make an asynchronous request for balloon info. When the request completes |
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* a QDict will be returned according to the following specification: |
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* |
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* - "actual": current balloon value in bytes |
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* The following fields may or may not be present: |
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* - "mem_swapped_in": Amount of memory swapped in (bytes) |
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* - "mem_swapped_out": Amount of memory swapped out (bytes) |
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* - "major_page_faults": Number of major faults |
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* - "minor_page_faults": Number of minor faults |
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* - "free_mem": Total amount of free and unused memory (bytes) |
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* - "total_mem": Total amount of available memory (bytes) |
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* |
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* Example: |
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* |
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* { "actual": 1073741824, "mem_swapped_in": 0, "mem_swapped_out": 0, |
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* "major_page_faults": 142, "minor_page_faults": 239245, |
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* "free_mem": 1014185984, "total_mem": 1044668416 } |
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*/ |
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static int do_info_balloon(Monitor *mon, MonitorCompletion cb, void *opaque) |
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{ |
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int ret; |
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if (kvm_enabled() && !kvm_has_sync_mmu()) { |
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qerror_report(QERR_KVM_MISSING_CAP, "synchronous MMU", "balloon"); |
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return -1; |
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} |
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ret = qemu_balloon_status(cb, opaque); |
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if (!ret) { |
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qerror_report(QERR_DEVICE_NOT_ACTIVE, "balloon"); |
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return -1; |
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} |
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return 0; |
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} |
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/** |
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* do_balloon(): Request VM to change its memory allocation |
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*/ |
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static int do_balloon(Monitor *mon, const QDict *params, |
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MonitorCompletion cb, void *opaque) |
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{ |
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int ret; |
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if (kvm_enabled() && !kvm_has_sync_mmu()) { |
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qerror_report(QERR_KVM_MISSING_CAP, "synchronous MMU", "balloon"); |
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return -1; |
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} |
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ret = qemu_balloon(qdict_get_int(params, "value"), cb, opaque); |
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if (ret == 0) { |
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qerror_report(QERR_DEVICE_NOT_ACTIVE, "balloon"); |
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return -1; |
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} |
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cb(opaque, NULL); |
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return 0; |
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} |
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2354 | 2269 |
static qemu_acl *find_acl(Monitor *mon, const char *name) |
2355 | 2270 |
{ |
2356 | 2271 |
qemu_acl *acl = qemu_acl_find(name); |
b/vl.c | ||
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146 | 146 |
#include "audio/audio.h" |
147 | 147 |
#include "migration.h" |
148 | 148 |
#include "kvm.h" |
149 |
#include "balloon.h" |
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150 | 149 |
#include "qemu-option.h" |
151 | 150 |
#include "qemu-config.h" |
152 | 151 |
#include "qemu-objects.h" |
... | ... | |
307 | 306 |
#endif |
308 | 307 |
} |
309 | 308 |
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/***************/ |
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/* ballooning */ |
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static QEMUBalloonEvent *qemu_balloon_event; |
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void *qemu_balloon_event_opaque; |
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315 |
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void qemu_add_balloon_handler(QEMUBalloonEvent *func, void *opaque) |
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{ |
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qemu_balloon_event = func; |
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qemu_balloon_event_opaque = opaque; |
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} |
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int qemu_balloon(ram_addr_t target, MonitorCompletion cb, void *opaque) |
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{ |
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if (qemu_balloon_event) { |
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qemu_balloon_event(qemu_balloon_event_opaque, target, cb, opaque); |
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return 1; |
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} else { |
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return 0; |
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} |
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} |
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int qemu_balloon_status(MonitorCompletion cb, void *opaque) |
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{ |
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if (qemu_balloon_event) { |
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qemu_balloon_event(qemu_balloon_event_opaque, 0, cb, opaque); |
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return 1; |
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} else { |
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return 0; |
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} |
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} |
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342 |
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343 | 309 |
/***********************************************************/ |
344 | 310 |
/* real time host monotonic timer */ |
345 | 311 |
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