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authorPeter Xu <peterx@redhat.com>2016-02-18 13:16:53 +0800
committerPaolo Bonzini <pbonzini@redhat.com>2016-02-22 18:40:28 +0100
commit2264c2c96e0a1f0913412da73e9bcaf9f8fa4427 (patch)
treef0cf19bf89e0eb79998f1036d5cc25fc18461852
parent1fbeff72c2ba17aedfbf0d57caf8945862725c54 (diff)
DumpState: adding total_size and written_size fields
Here, total_size is the size in bytes to be dumped (raw data, which means before compression), while written_size are bytes handled (raw size too). Signed-off-by: Peter Xu <peterx@redhat.com> Message-Id: <1455772616-8668-9-git-send-email-peterx@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
-rw-r--r--dump.c32
-rw-r--r--include/sysemu/dump.h9
2 files changed, 41 insertions, 0 deletions
diff --git a/dump.c b/dump.c
index 9210a72d61..cd4ae5e9e6 100644
--- a/dump.c
+++ b/dump.c
@@ -331,6 +331,8 @@ static void write_data(DumpState *s, void *buf, int length, Error **errp)
ret = fd_write_vmcore(buf, length, s);
if (ret < 0) {
error_setg(errp, "dump: failed to save memory");
+ } else {
+ s->written_size += length;
}
}
@@ -1324,6 +1326,7 @@ static void write_dump_pages(DumpState *s, Error **errp)
goto out;
}
}
+ s->written_size += s->dump_info.page_size;
}
ret = write_cache(&page_desc, NULL, 0, true);
@@ -1456,6 +1459,30 @@ bool dump_in_progress(void)
return (state->status == DUMP_STATUS_ACTIVE);
}
+/* calculate total size of memory to be dumped (taking filter into
+ * acoount.) */
+static int64_t dump_calculate_size(DumpState *s)
+{
+ GuestPhysBlock *block;
+ int64_t size = 0, total = 0, left = 0, right = 0;
+
+ QTAILQ_FOREACH(block, &s->guest_phys_blocks.head, next) {
+ if (s->has_filter) {
+ /* calculate the overlapped region. */
+ left = MAX(s->begin, block->target_start);
+ right = MIN(s->begin + s->length, block->target_end);
+ size = right - left;
+ size = size > 0 ? size : 0;
+ } else {
+ /* count the whole region in */
+ size = (block->target_end - block->target_start);
+ }
+ total += size;
+ }
+
+ return total;
+}
+
static void dump_init(DumpState *s, int fd, bool has_format,
DumpGuestMemoryFormat format, bool paging, bool has_filter,
int64_t begin, int64_t length, Error **errp)
@@ -1467,6 +1494,7 @@ static void dump_init(DumpState *s, int fd, bool has_format,
s->has_format = has_format;
s->format = format;
+ s->written_size = 0;
/* kdump-compressed is conflict with paging and filter */
if (has_format && format != DUMP_GUEST_MEMORY_FORMAT_ELF) {
@@ -1498,6 +1526,10 @@ static void dump_init(DumpState *s, int fd, bool has_format,
guest_phys_blocks_init(&s->guest_phys_blocks);
guest_phys_blocks_append(&s->guest_phys_blocks);
+ s->total_size = dump_calculate_size(s);
+#ifdef DEBUG_DUMP_GUEST_MEMORY
+ fprintf(stderr, "DUMP: total memory to dump: %lu\n", s->total_size);
+#endif
s->start = get_start_block(s);
if (s->start == -1) {
diff --git a/include/sysemu/dump.h b/include/sysemu/dump.h
index 06393c3f8f..ef931be469 100644
--- a/include/sysemu/dump.h
+++ b/include/sysemu/dump.h
@@ -182,6 +182,15 @@ typedef struct DumpState {
bool has_format; /* whether format is provided */
DumpGuestMemoryFormat format; /* valid only if has_format == true */
QemuThread dump_thread; /* thread for detached dump */
+
+ int64_t total_size; /* total memory size (in bytes) to
+ * be dumped. When filter is
+ * enabled, this will only count
+ * those to be written. */
+ int64_t written_size; /* written memory size (in bytes),
+ * this could be used to calculate
+ * how much work we have
+ * finished. */
} DumpState;
uint16_t cpu_to_dump16(DumpState *s, uint16_t val);