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ramblock: add new hmp command "info ramblock"

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To dump information about ramblocks. It looks like:

(qemu) info ramblock
              Block Name    PSize              Offset               Used              Total
            /objects/mem    2 MiB  0x0000000000000000 0x0000000080000000 0x0000000080000000
                vga.vram    4 KiB  0x0000000080060000 0x0000000001000000 0x0000000001000000
    /rom@etc/acpi/tables    4 KiB  0x00000000810b0000 0x0000000000020000 0x0000000000200000
                 pc.bios    4 KiB  0x0000000080000000 0x0000000000040000 0x0000000000040000
  0000:00:03.0/e1000.rom    4 KiB  0x0000000081070000 0x0000000000040000 0x0000000000040000
                  pc.rom    4 KiB  0x0000000080040000 0x0000000000020000 0x0000000000020000
    0000:00:02.0/vga.rom    4 KiB  0x0000000081060000 0x0000000000010000 0x0000000000010000
   /rom@etc/table-loader    4 KiB  0x00000000812b0000 0x0000000000001000 0x0000000000001000
      /rom@etc/acpi/rsdp    4 KiB  0x00000000812b1000 0x0000000000001000 0x0000000000001000

Ramblock is something hidden internally in QEMU implementation, and this
command should only be used by mostly QEMU developers on RAM stuff. It
is not a command suitable for QMP interface. So only HMP interface is
provided for it.

Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <1494562661-9063-4-git-send-email-peterx@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This commit is contained in:
Peter Xu 2017-05-12 12:17:41 +08:00 committed by Dr. David Alan Gilbert
parent 22951aaaeb
commit be9b23c4a5
5 changed files with 44 additions and 0 deletions
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22
exec.c
View file

@ -71,6 +71,8 @@
#include "qemu/mmap-alloc.h"
#endif
#include "monitor/monitor.h"
//#define DEBUG_SUBPAGE
#if !defined(CONFIG_USER_ONLY)
@ -1333,6 +1335,26 @@ void qemu_mutex_unlock_ramlist(void)
qemu_mutex_unlock(&ram_list.mutex);
}
void ram_block_dump(Monitor *mon)
{
RAMBlock *block;
char *psize;
rcu_read_lock();
monitor_printf(mon, "%24s %8s %18s %18s %18s\n",
"Block Name", "PSize", "Offset", "Used", "Total");
RAMBLOCK_FOREACH(block) {
psize = size_to_str(block->page_size);
monitor_printf(mon, "%24s %8s 0x%016" PRIx64 " 0x%016" PRIx64
" 0x%016" PRIx64 "\n", block->idstr, psize,
(uint64_t)block->offset,
(uint64_t)block->used_length,
(uint64_t)block->max_length);
g_free(psize);
}
rcu_read_unlock();
}
#ifdef __linux__
/*
* FIXME TOCTTOU: this iterates over memory backends' mem-path, which

14
hmp-commands-info.hx
View file

@ -785,6 +785,20 @@ STEXI
@item info dump
@findex dump
Display the latest dump status.
ETEXI
{
.name = "ramblock",
.args_type = "",
.params = "",
.help = "Display system ramblock information",
.cmd = hmp_info_ramblock,
},
STEXI
@item info ramblock
@findex ramblock
Dump all the ramblocks of the system.
ETEXI
{

6
hmp.c
View file

@ -39,6 +39,7 @@
#include "qemu-io.h"
#include "qemu/cutils.h"
#include "qemu/error-report.h"
#include "exec/ramlist.h"
#include "hw/intc/intc.h"
#ifdef CONFIG_SPICE
@ -2738,6 +2739,11 @@ void hmp_info_dump(Monitor *mon, const QDict *qdict)
qapi_free_DumpQueryResult(result);
}
void hmp_info_ramblock(Monitor *mon, const QDict *qdict)
{
ram_block_dump(mon);
}
void hmp_hotpluggable_cpus(Monitor *mon, const QDict *qdict)
{
Error *err = NULL;

1
hmp.h
View file

@ -140,6 +140,7 @@ void hmp_rocker_ports(Monitor *mon, const QDict *qdict);
void hmp_rocker_of_dpa_flows(Monitor *mon, const QDict *qdict);
void hmp_rocker_of_dpa_groups(Monitor *mon, const QDict *qdict);
void hmp_info_dump(Monitor *mon, const QDict *qdict);
void hmp_info_ramblock(Monitor *mon, const QDict *qdict);
void hmp_hotpluggable_cpus(Monitor *mon, const QDict *qdict);
void hmp_info_vm_generation_id(Monitor *mon, const QDict *qdict);

1
include/exec/ramlist.h
View file

@ -73,5 +73,6 @@ void ram_block_notifier_remove(RAMBlockNotifier *n);
void ram_block_notify_add(void *host, size_t size);
void ram_block_notify_remove(void *host, size_t size);
void ram_block_dump(Monitor *mon);
#endif /* RAMLIST_H */