BlockStatsList *qmp_query_blockstats(bool has_query_nodes, bool query_nodes, Error **errp) { BlockStatsList *head = NULL, **p_next = &head; BlockBackend *blk; BlockDriverState *bs; /* Just to be safe if query_nodes is not always initialized */ if (has_query_nodes && query_nodes) { for (bs = bdrv_next_node(NULL); bs; bs = bdrv_next_node(bs)) { BlockStatsList *info = g_malloc0(sizeof(*info)); AioContext *ctx = bdrv_get_aio_context(bs); aio_context_acquire(ctx); info->value = bdrv_query_bds_stats(bs, false); aio_context_release(ctx); *p_next = info; p_next = &info->next; } } else { for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { BlockStatsList *info = g_malloc0(sizeof(*info)); AioContext *ctx = blk_get_aio_context(blk); BlockStats *s; aio_context_acquire(ctx); s = bdrv_query_bds_stats(blk_bs(blk), true); s->has_device = true; s->device = g_strdup(blk_name(blk)); bdrv_query_blk_stats(s->stats, blk); aio_context_release(ctx); info->value = s; *p_next = info; p_next = &info->next; } } return head; }
static bool next_query_bds(BlockBackend **blk, BlockDriverState **bs, bool query_nodes) { if (query_nodes) { *bs = bdrv_next_node(*bs); return !!*bs; } *blk = blk_next(*blk); *bs = *blk ? blk_bs(*blk) : NULL; return !!*blk; }
BlockStatsList *qmp_query_blockstats(bool has_query_nodes, bool query_nodes, Error **errp) { BlockStatsList *head = NULL, **p_next = &head; BlockDriverState *bs = NULL; /* Just to be safe if query_nodes is not always initialized */ query_nodes = has_query_nodes && query_nodes; while ((bs = query_nodes ? bdrv_next_node(bs) : bdrv_next(bs))) { BlockStatsList *info = g_malloc0(sizeof(*info)); AioContext *ctx = bdrv_get_aio_context(bs); aio_context_acquire(ctx); info->value = bdrv_query_stats(bs, !query_nodes); aio_context_release(ctx); *p_next = info; p_next = &info->next; } return head; }