uint32_t dbuf_flags;
int err;
zio_t *zio;
- hrtime_t start;
+ hrtime_t start = 0;
ASSERT(length <= DMU_MAX_ACCESS);
*/
kstat_t *xuio_ksp = NULL;
+typedef struct xuio_stats {
+ /* loaned yet not returned arc_buf */
+ kstat_named_t xuiostat_onloan_rbuf;
+ kstat_named_t xuiostat_onloan_wbuf;
+ /* whether a copy is made when loaning out a read buffer */
+ kstat_named_t xuiostat_rbuf_copied;
+ kstat_named_t xuiostat_rbuf_nocopy;
+ /* whether a copy is made when assigning a write buffer */
+ kstat_named_t xuiostat_wbuf_copied;
+ kstat_named_t xuiostat_wbuf_nocopy;
+} xuio_stats_t;
+
+static xuio_stats_t xuio_stats = {
+ { "onloan_read_buf", KSTAT_DATA_UINT64 },
+ { "onloan_write_buf", KSTAT_DATA_UINT64 },
+ { "read_buf_copied", KSTAT_DATA_UINT64 },
+ { "read_buf_nocopy", KSTAT_DATA_UINT64 },
+ { "write_buf_copied", KSTAT_DATA_UINT64 },
+ { "write_buf_nocopy", KSTAT_DATA_UINT64 }
+};
+
+#define XUIOSTAT_INCR(stat, val) \
+ atomic_add_64(&xuio_stats.stat.value.ui64, (val))
+#define XUIOSTAT_BUMP(stat) XUIOSTAT_INCR(stat, 1)
+
int
dmu_xuio_init(xuio_t *xuio, int nblk)
{
dmu_object_info_from_dnode(dnode_t *dn, dmu_object_info_t *doi)
{
dnode_phys_t *dnp;
+ int i;
rw_enter(&dn->dn_struct_rwlock, RW_READER);
mutex_enter(&dn->dn_mtx);
doi->doi_physical_blocks_512 = (DN_USED_BYTES(dnp) + 256) >> 9;
doi->doi_max_offset = (dnp->dn_maxblkid + 1) * dn->dn_datablksz;
doi->doi_fill_count = 0;
- for (int i = 0; i < dnp->dn_nblkptr; i++)
+ for (i = 0; i < dnp->dn_nblkptr; i++)
doi->doi_fill_count += dnp->dn_blkptr[i].blk_fill;
mutex_exit(&dn->dn_mtx);