On Saturday, 2020-08-29 at 10:52:57 +08, Chuan Zheng wrote:
> Add trace_calls to make it easier to debug
>
> Signed-off-by: Chuan Zheng <zhengch...@huawei.com>
> Reviewed-by: Dr. David Alan Gilbert <dgilb...@redhat.com>
Reviewed-by: David Edmondson <david.edmond...@oracle.com>
> ---
> migration/dirtyrate.c | 9 +++++++++
> migration/trace-events | 8 ++++++++
> 2 files changed, 17 insertions(+)
>
> diff --git a/migration/dirtyrate.c b/migration/dirtyrate.c
> index fa1a12d..2a8f4ff 100644
> --- a/migration/dirtyrate.c
> +++ b/migration/dirtyrate.c
> @@ -22,6 +22,7 @@
> #include "qapi/qapi-commands-migration.h"
> #include "migration.h"
> #include "ram.h"
> +#include "trace.h"
> #include "dirtyrate.h"
>
> static int CalculatingState = DIRTY_RATE_STATUS_UNSTARTED;
> @@ -54,6 +55,7 @@ static bool get_sample_page_period(int64_t sec)
> static int dirtyrate_set_state(int *state, int old_state, int new_state)
> {
> assert(new_state < DIRTY_RATE_STATUS__MAX);
> + trace_dirtyrate_set_state(DirtyRateStatus_str(new_state));
> if (atomic_cmpxchg(state, old_state, new_state) == old_state) {
> return 0;
> } else {
> @@ -76,6 +78,8 @@ static struct DirtyRateInfo *query_dirty_rate_info(void)
> info->start_time = DirtyStat.start_time;
> info->calc_time = DirtyStat.calc_time;
>
> + trace_query_dirty_rate_info(DirtyRateStatus_str(CalculatingState));
> +
> return info;
> }
>
> @@ -123,6 +127,7 @@ static uint32_t get_ramblock_vfn_hash(struct
> RamblockDirtyInfo *info,
> crc = crc32(0, (info->ramblock_addr +
> vfn * TARGET_PAGE_SIZE), TARGET_PAGE_SIZE);
>
> + trace_get_ramblock_vfn_hash(info->idstr, vfn, crc);
> return crc;
> }
>
> @@ -228,6 +233,8 @@ static bool skip_sample_ramblock(RAMBlock *block)
> * want to sample.
> */
> if (qemu_ram_get_used_length(block) < (MIN_RAMBLOCK_SIZE << 10)) {
> + trace_skip_sample_ramblock(block->idstr,
> + qemu_ram_get_used_length(block));
> return true;
> }
>
> @@ -274,6 +281,7 @@ static void calc_page_dirty_rate(struct RamblockDirtyInfo
> *info)
> for (i = 0; i < info->sample_pages_count; i++) {
> crc = get_ramblock_vfn_hash(info, info->sample_page_vfn[i]);
> if (crc != info->hash_result[i]) {
> + trace_calc_page_dirty_rate(info->idstr, crc,
> info->hash_result[i]);
> info->sample_dirty_count++;
> }
> }
> @@ -299,6 +307,7 @@ find_page_matched(RAMBlock *block, int count,
> if (infos[i].ramblock_addr != qemu_ram_get_host_addr(block) ||
> infos[i].ramblock_pages !=
> (qemu_ram_get_used_length(block) >> TARGET_PAGE_BITS)) {
> + trace_find_page_matched(block->idstr);
> return NULL;
> }
>
> diff --git a/migration/trace-events b/migration/trace-events
> index 4ab0a50..8c2b58f 100644
> --- a/migration/trace-events
> +++ b/migration/trace-events
> @@ -312,3 +312,11 @@ dirty_bitmap_load_bits_zeroes(void) ""
> dirty_bitmap_load_header(uint32_t flags) "flags 0x%x"
> dirty_bitmap_load_enter(void) ""
> dirty_bitmap_load_success(void) ""
> +
> +# dirtyrate.c
> +dirtyrate_set_state(const char *new_state) "new state %s"
> +query_dirty_rate_info(const char *new_state) "current state %s"
> +get_ramblock_vfn_hash(const char *idstr, uint64_t vfn, uint32_t crc)
> "ramblock name: %s, vfn: %"PRIu64 ", crc: %" PRIu32
> +calc_page_dirty_rate(const char *idstr, uint32_t new_crc, uint32_t old_crc)
> "ramblock name: %s, new crc: %" PRIu32 ", old crc: %" PRIu32
> +skip_sample_ramblock(const char *idstr, uint64_t ramblock_size) "ramblock
> name: %s, ramblock size: %" PRIu64
> +find_page_matched(const char *idstr) "ramblock %s addr or size changed"
> --
> 1.8.3.1
dme.
--
All of us, we're going out tonight. We're gonna walk all over your cars.
