示例#1
0
文件: qapi.c 项目: GamerSource/qemu
static void bdrv_query_bds_stats(BlockStats *s, const BlockDriverState *bs,
                                 bool query_backing)
{
    if (bdrv_get_node_name(bs)[0]) {
        s->has_node_name = true;
        s->node_name = g_strdup(bdrv_get_node_name(bs));
    }

    s->stats->wr_highest_offset = bs->wr_highest_offset;

    if (bs->file) {
        s->has_parent = true;
        s->parent = bdrv_query_stats(NULL, bs->file->bs, query_backing);
    }

    if (query_backing && bs->backing) {
        s->has_backing = true;
        s->backing = bdrv_query_stats(NULL, bs->backing->bs, query_backing);
    }

}
示例#2
0
static char *print_drive(void *ptr)
{
    const char *name;

    name = blk_name(ptr);
    if (!*name) {
        BlockDriverState *bs = blk_bs(ptr);
        if (bs) {
            name = bdrv_get_node_name(bs);
        }
    }
    return g_strdup(name);
}
示例#3
0
static BlockStats *bdrv_query_bds_stats(BlockDriverState *bs,
                                        bool blk_level)
{
    BlockStats *s = NULL;

    s = g_malloc0(sizeof(*s));
    s->stats = g_malloc0(sizeof(*s->stats));

    if (!bs) {
        return s;
    }

    /* Skip automatically inserted nodes that the user isn't aware of in
     * a BlockBackend-level command. Stay at the exact node for a node-level
     * command. */
    while (blk_level && bs->drv && bs->implicit) {
        bs = backing_bs(bs);
        assert(bs);
    }

    if (bdrv_get_node_name(bs)[0]) {
        s->has_node_name = true;
        s->node_name = g_strdup(bdrv_get_node_name(bs));
    }

    s->stats->wr_highest_offset = stat64_get(&bs->wr_highest_offset);

    if (bs->file) {
        s->has_parent = true;
        s->parent = bdrv_query_bds_stats(bs->file->bs, blk_level);
    }

    if (blk_level && bs->backing) {
        s->has_backing = true;
        s->backing = bdrv_query_bds_stats(bs->backing->bs, blk_level);
    }

    return s;
}
示例#4
0
void qdev_prop_set_drive(DeviceState *dev, const char *name,
                         BlockBackend *value, Error **errp)
{
    const char *ref = "";

    if (value) {
        ref = blk_name(value);
        if (!*ref) {
            BlockDriverState *bs = blk_bs(value);
            if (bs) {
                ref = bdrv_get_node_name(bs);
            }
        }
    }

    object_property_set_str(OBJECT(dev), ref, name, errp);
}
示例#5
0
static BlockStats *bdrv_query_stats(const BlockDriverState *bs,
                                    bool query_backing)
{
    BlockStats *s;

    s = g_malloc0(sizeof(*s));

    if (bdrv_get_device_name(bs)[0]) {
        s->has_device = true;
        s->device = g_strdup(bdrv_get_device_name(bs));
    }

    if (bdrv_get_node_name(bs)[0]) {
        s->has_node_name = true;
        s->node_name = g_strdup(bdrv_get_node_name(bs));
    }

    s->stats = g_malloc0(sizeof(*s->stats));
    if (bs->blk) {
        BlockAcctStats *stats = blk_get_stats(bs->blk);
        BlockAcctTimedStats *ts = NULL;

        s->stats->rd_bytes = stats->nr_bytes[BLOCK_ACCT_READ];
        s->stats->wr_bytes = stats->nr_bytes[BLOCK_ACCT_WRITE];
        s->stats->rd_operations = stats->nr_ops[BLOCK_ACCT_READ];
        s->stats->wr_operations = stats->nr_ops[BLOCK_ACCT_WRITE];

        s->stats->failed_rd_operations = stats->failed_ops[BLOCK_ACCT_READ];
        s->stats->failed_wr_operations = stats->failed_ops[BLOCK_ACCT_WRITE];
        s->stats->failed_flush_operations = stats->failed_ops[BLOCK_ACCT_FLUSH];

        s->stats->invalid_rd_operations = stats->invalid_ops[BLOCK_ACCT_READ];
        s->stats->invalid_wr_operations = stats->invalid_ops[BLOCK_ACCT_WRITE];
        s->stats->invalid_flush_operations =
            stats->invalid_ops[BLOCK_ACCT_FLUSH];

        s->stats->rd_merged = stats->merged[BLOCK_ACCT_READ];
        s->stats->wr_merged = stats->merged[BLOCK_ACCT_WRITE];
        s->stats->flush_operations = stats->nr_ops[BLOCK_ACCT_FLUSH];
        s->stats->wr_total_time_ns = stats->total_time_ns[BLOCK_ACCT_WRITE];
        s->stats->rd_total_time_ns = stats->total_time_ns[BLOCK_ACCT_READ];
        s->stats->flush_total_time_ns = stats->total_time_ns[BLOCK_ACCT_FLUSH];

        s->stats->has_idle_time_ns = stats->last_access_time_ns > 0;
        if (s->stats->has_idle_time_ns) {
            s->stats->idle_time_ns = block_acct_idle_time_ns(stats);
        }

        s->stats->account_invalid = stats->account_invalid;
        s->stats->account_failed = stats->account_failed;

        while ((ts = block_acct_interval_next(stats, ts))) {
            BlockDeviceTimedStatsList *timed_stats =
                g_malloc0(sizeof(*timed_stats));
            BlockDeviceTimedStats *dev_stats = g_malloc0(sizeof(*dev_stats));
            timed_stats->next = s->stats->timed_stats;
            timed_stats->value = dev_stats;
            s->stats->timed_stats = timed_stats;

            TimedAverage *rd = &ts->latency[BLOCK_ACCT_READ];
            TimedAverage *wr = &ts->latency[BLOCK_ACCT_WRITE];
            TimedAverage *fl = &ts->latency[BLOCK_ACCT_FLUSH];

            dev_stats->interval_length = ts->interval_length;

            dev_stats->min_rd_latency_ns = timed_average_min(rd);
            dev_stats->max_rd_latency_ns = timed_average_max(rd);
            dev_stats->avg_rd_latency_ns = timed_average_avg(rd);

            dev_stats->min_wr_latency_ns = timed_average_min(wr);
            dev_stats->max_wr_latency_ns = timed_average_max(wr);
            dev_stats->avg_wr_latency_ns = timed_average_avg(wr);

            dev_stats->min_flush_latency_ns = timed_average_min(fl);
            dev_stats->max_flush_latency_ns = timed_average_max(fl);
            dev_stats->avg_flush_latency_ns = timed_average_avg(fl);

            dev_stats->avg_rd_queue_depth =
                block_acct_queue_depth(ts, BLOCK_ACCT_READ);
            dev_stats->avg_wr_queue_depth =
                block_acct_queue_depth(ts, BLOCK_ACCT_WRITE);
        }
    }

    s->stats->wr_highest_offset = bs->wr_highest_offset;

    if (bs->file) {
        s->has_parent = true;
        s->parent = bdrv_query_stats(bs->file->bs, query_backing);
    }

    if (query_backing && bs->backing) {
        s->has_backing = true;
        s->backing = bdrv_query_stats(bs->backing->bs, query_backing);
    }

    return s;
}