Improve N-way mirror performance

[zfs.git] / include / sys / dmu_tx.h

diff --git a/include/sys/dmu_tx.h b/include/sys/dmu_tx.h
index c5ea50f..40c1ded 100644 (file)
--- a/include/sys/dmu_tx.h
+++ b/include/sys/dmu_tx.h
@@ -60,7 +60,7 @@ struct dmu_tx {
        list_t tx_callbacks; /* list of dmu_tx_callback_t on this dmu_tx */
        uint8_t tx_anyobj;
        int tx_err;
-#ifdef ZFS_DEBUG
+#ifdef DEBUG_DMU_TX
        uint64_t tx_space_towrite;
        uint64_t tx_space_tofree;
        uint64_t tx_space_tooverwrite;
@@ -91,7 +91,7 @@ typedef struct dmu_tx_hold {
        uint64_t txh_space_tounref;
        uint64_t txh_memory_tohold;
        uint64_t txh_fudge;
-#ifdef ZFS_DEBUG
+#ifdef DEBUG_DMU_TX
        enum dmu_tx_hold_type txh_type;
        uint64_t txh_arg1;
        uint64_t txh_arg2;
@@ -105,6 +105,31 @@ typedef struct dmu_tx_callback {
 } dmu_tx_callback_t;
 
 /*
+ * Used for dmu tx kstat.
+ */
+typedef struct dmu_tx_stats {
+       kstat_named_t dmu_tx_assigned;
+       kstat_named_t dmu_tx_delay;
+       kstat_named_t dmu_tx_error;
+       kstat_named_t dmu_tx_suspended;
+       kstat_named_t dmu_tx_group;
+       kstat_named_t dmu_tx_how;
+       kstat_named_t dmu_tx_memory_reserve;
+       kstat_named_t dmu_tx_memory_reclaim;
+       kstat_named_t dmu_tx_memory_inflight;
+       kstat_named_t dmu_tx_dirty_throttle;
+       kstat_named_t dmu_tx_write_limit;
+       kstat_named_t dmu_tx_quota;
+} dmu_tx_stats_t;
+
+extern dmu_tx_stats_t dmu_tx_stats;
+
+#define DMU_TX_STAT_INCR(stat, val) \
+    atomic_add_64(&dmu_tx_stats.stat.value.ui64, (val));
+#define DMU_TX_STAT_BUMP(stat) \
+    DMU_TX_STAT_INCR(stat, 1);
+
+/*
  * These routines are defined in dmu.h, and are called by the user.
  */
 dmu_tx_t *dmu_tx_create(objset_t *dd);
@@ -135,12 +160,15 @@ void dmu_tx_dirty_buf(dmu_tx_t *tx, struct dmu_buf_impl *db);
 int dmu_tx_holds(dmu_tx_t *tx, uint64_t object);
 void dmu_tx_hold_space(dmu_tx_t *tx, uint64_t space);
 
-#ifdef ZFS_DEBUG
+#ifdef DEBUG_DMU_TX
 #define        DMU_TX_DIRTY_BUF(tx, db)        dmu_tx_dirty_buf(tx, db)
 #else
 #define        DMU_TX_DIRTY_BUF(tx, db)
 #endif
 
+void dmu_tx_init(void);
+void dmu_tx_fini(void);
+
 #ifdef __cplusplus
 }
 #endif