New upstream version 0.7.2

[mirror_zfs-debian.git] / include / sys / trace_dbuf.h

diff --git a/include/sys/trace_dbuf.h b/include/sys/trace_dbuf.h
index 49e35e3dcbfe2bd32a54deea7480b135d9f9dba2..c3e70c371aa0f899bc1fdbf3a91535e591887c80 100644 (file)
--- a/include/sys/trace_dbuf.h
+++ b/include/sys/trace_dbuf.h
@@ -33,6 +33,10 @@
 #include <linux/tracepoint.h>
 #include <sys/types.h>
 
+#ifndef        TRACE_DBUF_MSG_MAX
+#define        TRACE_DBUF_MSG_MAX      512
+#endif
+
 /*
  * Generic support for two argument tracepoints of the form:
  *
@@ -42,7 +46,7 @@
  */
 
 #define        DBUF_TP_STRUCT_ENTRY                                    \
-       __field(const char *,   os_spa)                         \
+       __dynamic_array(char,   os_spa, TRACE_DBUF_MSG_MAX)     \
        __field(uint64_t,       ds_object)                      \
        __field(uint64_t,       db_object)                      \
        __field(uint64_t,       db_level)                       \
@@ -51,46 +55,85 @@
        __field(uint64_t,       db_size)                        \
        __field(uint64_t,       db_state)                       \
        __field(int64_t,        db_holds)                       \
+       __dynamic_array(char,   msg,    TRACE_DBUF_MSG_MAX)
 
-#define        DBUF_TP_FAST_ASSIGN                                     \
-       __entry->os_spa =                                       \
-           spa_name(DB_DNODE(db)->dn_objset->os_spa);          \
-                                                               \
-       __entry->ds_object = db->db_objset->os_dsl_dataset ?    \
-           db->db_objset->os_dsl_dataset->ds_object : 0;       \
-                                                               \
-       __entry->db_object = db->db.db_object;                  \
-       __entry->db_level  = db->db_level;                      \
-       __entry->db_blkid  = db->db_blkid;                      \
-       __entry->db_offset = db->db.db_offset;                  \
-       __entry->db_size   = db->db.db_size;                    \
-       __entry->db_state  = db->db_state;                      \
-       __entry->db_holds  = refcount_count(&db->db_holds);
+#define        DBUF_TP_FAST_ASSIGN                                             \
+       if (db != NULL) {                                               \
+               __assign_str(os_spa,                                    \
+               spa_name(DB_DNODE(db)->dn_objset->os_spa));             \
+                                                                       \
+               __entry->ds_object = db->db_objset->os_dsl_dataset ?    \
+               db->db_objset->os_dsl_dataset->ds_object : 0;           \
+                                                                       \
+               __entry->db_object = db->db.db_object;                  \
+               __entry->db_level  = db->db_level;                      \
+               __entry->db_blkid  = db->db_blkid;                      \
+               __entry->db_offset = db->db.db_offset;                  \
+               __entry->db_size   = db->db.db_size;                    \
+               __entry->db_state  = db->db_state;                      \
+               __entry->db_holds  = refcount_count(&db->db_holds);     \
+               snprintf(__get_str(msg), TRACE_DBUF_MSG_MAX,            \
+                   DBUF_TP_PRINTK_FMT, DBUF_TP_PRINTK_ARGS);           \
+       } else {                                                        \
+               __assign_str(os_spa, "NULL")                            \
+               __entry->ds_object = 0;                                 \
+               __entry->db_object = 0;                                 \
+               __entry->db_level  = 0;                                 \
+               __entry->db_blkid  = 0;                                 \
+               __entry->db_offset = 0;                                 \
+               __entry->db_size   = 0;                                 \
+               __entry->db_state  = 0;                                 \
+               __entry->db_holds  = 0;                                 \
+               snprintf(__get_str(msg), TRACE_DBUF_MSG_MAX,            \
+                   "dbuf { NULL }");                                   \
+       }
 
 #define        DBUF_TP_PRINTK_FMT                                              \
        "dbuf { spa \"%s\" objset %llu object %llu level %llu "         \
        "blkid %llu offset %llu size %llu state %llu holds %lld }"
 
 #define        DBUF_TP_PRINTK_ARGS                                     \
-       __entry->os_spa, __entry->ds_object,                    \
+       __get_str(os_spa), __entry->ds_object,                  \
        __entry->db_object, __entry->db_level,                  \
        __entry->db_blkid, __entry->db_offset,                  \
        __entry->db_size, __entry->db_state, __entry->db_holds
 
+/* BEGIN CSTYLED */
 DECLARE_EVENT_CLASS(zfs_dbuf_class,
        TP_PROTO(dmu_buf_impl_t *db, zio_t *zio),
        TP_ARGS(db, zio),
        TP_STRUCT__entry(DBUF_TP_STRUCT_ENTRY),
        TP_fast_assign(DBUF_TP_FAST_ASSIGN),
-       TP_printk(DBUF_TP_PRINTK_FMT, DBUF_TP_PRINTK_ARGS)
+       TP_printk("%s", __get_str(msg))
 );
+/* END CSTYLED */
 
+/* BEGIN CSTYLED */
 #define        DEFINE_DBUF_EVENT(name) \
 DEFINE_EVENT(zfs_dbuf_class, name, \
        TP_PROTO(dmu_buf_impl_t *db, zio_t *zio), \
        TP_ARGS(db, zio))
+/* END CSTYLED */
 DEFINE_DBUF_EVENT(zfs_blocked__read);
 
+/* BEGIN CSTYLED */
+DECLARE_EVENT_CLASS(zfs_dbuf_evict_one_class,
+       TP_PROTO(dmu_buf_impl_t *db, multilist_sublist_t *mls),
+       TP_ARGS(db, mls),
+       TP_STRUCT__entry(DBUF_TP_STRUCT_ENTRY),
+       TP_fast_assign(DBUF_TP_FAST_ASSIGN),
+       TP_printk("%s", __get_str(msg))
+);
+/* END CSTYLED */
+
+/* BEGIN CSTYLED */
+#define        DEFINE_DBUF_EVICT_ONE_EVENT(name) \
+DEFINE_EVENT(zfs_dbuf_evict_one_class, name, \
+       TP_PROTO(dmu_buf_impl_t *db, multilist_sublist_t *mls), \
+       TP_ARGS(db, mls))
+/* END CSTYLED */
+DEFINE_DBUF_EVICT_ONE_EVENT(zfs_dbuf__evict__one);
+
 #endif /* _TRACE_DBUF_H */
 
 #undef TRACE_INCLUDE_PATH