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memory: simple memory tree printer

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Add a monitor command 'info mtree' to show the memory hierarchy
much like /proc/iomem in Linux.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Blue Swirl 2011-09-11 20:22:05 +00:00 • committed by Avi Kivity
parent 3917149d96
commit 314e298735
3 changed files with 106 additions and 0 deletions
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91
memory.c
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@ -1271,3 +1271,94 @@ void set_system_io_map(MemoryRegion *mr)
address_space_io.root = mr;
memory_region_update_topology();
}
typedef struct MemoryRegionList MemoryRegionList;
struct MemoryRegionList {
const MemoryRegion *mr;
bool printed;
QTAILQ_ENTRY(MemoryRegionList) queue;
};
typedef QTAILQ_HEAD(queue, MemoryRegionList) MemoryRegionListHead;
static void mtree_print_mr(fprintf_function mon_printf, void *f,
const MemoryRegion *mr, unsigned int level,
target_phys_addr_t base,
MemoryRegionListHead *print_queue)
{
const MemoryRegion *submr;
unsigned int i;
if (!mr) {
return;
}
for (i = 0; i < level; i++) {
mon_printf(f, " ");
}
if (mr->alias) {
MemoryRegionList *ml;
bool found = false;
/* check if the alias is already in the queue */
QTAILQ_FOREACH(ml, print_queue, queue) {
if (ml->mr == mr->alias && !ml->printed) {
found = true;
}
}
if (!found) {
ml = g_new(MemoryRegionList, 1);
ml->mr = mr->alias;
ml->printed = false;
QTAILQ_INSERT_TAIL(print_queue, ml, queue);
}
mon_printf(f, TARGET_FMT_plx "-" TARGET_FMT_plx " : alias %s @%s "
TARGET_FMT_plx "-" TARGET_FMT_plx "\n",
base + mr->addr,
base + mr->addr + (target_phys_addr_t)mr->size - 1,
mr->name,
mr->alias->name,
mr->alias_offset,
mr->alias_offset + (target_phys_addr_t)mr->size - 1);
} else {
mon_printf(f, TARGET_FMT_plx "-" TARGET_FMT_plx " : %s\n",
base + mr->addr,
base + mr->addr + (target_phys_addr_t)mr->size - 1,
mr->name);
}
QTAILQ_FOREACH(submr, &mr->subregions, subregions_link) {
mtree_print_mr(mon_printf, f, submr, level + 1, base + mr->addr,
print_queue);
}
}
void mtree_info(fprintf_function mon_printf, void *f)
{
MemoryRegionListHead ml_head;
MemoryRegionList *ml, *ml2;
QTAILQ_INIT(&ml_head);
mon_printf(f, "memory\n");
mtree_print_mr(mon_printf, f, address_space_memory.root, 0, 0, &ml_head);
/* print aliased regions */
QTAILQ_FOREACH(ml, &ml_head, queue) {
if (!ml->printed) {
mon_printf(f, "%s\n", ml->mr->name);
mtree_print_mr(mon_printf, f, ml->mr, 0, 0, &ml_head);
}
}
QTAILQ_FOREACH_SAFE(ml, &ml_head, queue, ml2) {
g_free(ml2);
}
QTAILQ_INIT(&ml_head);
mon_printf(f, "I/O\n");
mtree_print_mr(mon_printf, f, address_space_io.root, 0, 0, &ml_head);
}