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[Qemu-devel] [PATCH v3 09/12] DumpState: adding total_size and written_s
From: |
Peter Xu |
Subject: |
[Qemu-devel] [PATCH v3 09/12] DumpState: adding total_size and written_size fields |
Date: |
Mon, 30 Nov 2015 19:32:17 +0800 |
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 <address@hidden>
---
dump.c | 32 ++++++++++++++++++++++++++++++++
include/sysemu/dump.h | 9 +++++++++
2 files changed, 41 insertions(+)
diff --git a/dump.c b/dump.c
index 43f565d..56a2d7e 100644
--- a/dump.c
+++ b/dump.c
@@ -333,6 +333,8 @@ static void write_data(DumpState *s, void *buf, int length,
Error **errp)
if (ret < 0) {
error_setg(errp, "dump: failed to save memory");
}
+
+ s->written_size += length;
}
/* write the memory to vmcore. 1 page per I/O. */
@@ -1301,6 +1303,7 @@ static void write_dump_pages(DumpState *s, Error **errp)
goto out;
}
}
+ s->written_size += TARGET_PAGE_SIZE;
}
ret = write_cache(&page_desc, NULL, 0, true);
@@ -1443,6 +1446,30 @@ bool dump_in_progress(void)
return (state->status == DUMP_STATUS_ACTIVE);
}
+/* calculate total size of memory to be dumped (taking filter into
+ * acoount.) */
+static size_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)
@@ -1454,6 +1481,7 @@ 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) {
@@ -1485,6 +1513,10 @@ 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 31930c6..9c5a46b 100644
--- a/include/sysemu/dump.h
+++ b/include/sysemu/dump.h
@@ -189,6 +189,15 @@ 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 */
+
+ size_t total_size; /* total memory size (in bytes) to
+ * be dumped. When filter is
+ * enabled, this will only count
+ * those to be written. */
+ size_t written_size; /* written memory size (in bytes),
+ * this could be used to calculate
+ * how many work we have
+ * finished. */
} DumpState;
uint16_t cpu_to_dump16(DumpState *s, uint16_t val);
--
2.4.3
- Re: [Qemu-devel] [PATCH v3 03/12] dump-guest-memory: using static DumpState, add DumpStatus, (continued)
- [Qemu-devel] [PATCH v3 04/12] dump-guest-memory: add dump_in_progress() helper function, Peter Xu, 2015/11/30
- [Qemu-devel] [PATCH v3 05/12] dump-guest-memory: introduce dump_process() helper function., Peter Xu, 2015/11/30
- [Qemu-devel] [PATCH v3 06/12] dump-guest-memory: disable dump when in INMIGRATE state, Peter Xu, 2015/11/30
- [Qemu-devel] [PATCH v3 07/12] dump-guest-memory: add "detach" support, Peter Xu, 2015/11/30
- [Qemu-devel] [PATCH v3 08/12] dump-guest-memory: add qmp event DUMP_COMPLETED, Peter Xu, 2015/11/30
- [Qemu-devel] [PATCH v3 09/12] DumpState: adding total_size and written_size fields,
Peter Xu <=
- [Qemu-devel] [PATCH v3 10/12] Dump: add qmp command "query-dump", Peter Xu, 2015/11/30
- [Qemu-devel] [PATCH v3 11/12] Dump: add hmp command "info dump", Peter Xu, 2015/11/30
- [Qemu-devel] [PATCH v3 12/12] Dump: enhance the documentations., Peter Xu, 2015/11/30