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authorBlue Swirl <blauwirbel@gmail.com>2011-09-11 20:22:05 +0000
committerAvi Kivity <avi@redhat.com>2011-10-02 16:27:13 +0200
commit314e298735903035ba2b7b0f3cf39981f4171546 (patch)
tree51a57705a5d1eaab97529863de5f5d40b9483294 /memory.c
parent3917149d96cfa5f619de770af6059f37b6e1df77 (diff)
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memory: simple memory tree printer
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>
Diffstat (limited to 'memory.c')
-rw-r--r--memory.c91
1 files changed, 91 insertions, 0 deletions
diff --git a/memory.c b/memory.c
index 71e769e..a85d118 100644
--- a/memory.c
+++ b/memory.c
@@ -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);
+}