Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h
index 3043e5e..eaae275 100644
--- a/fs/xfs/xfs_trace.h
+++ b/fs/xfs/xfs_trace.h
@@ -23,6 +23,7 @@
 struct xlog_ticket;
 struct xlog_recover;
 struct xlog_recover_item;
+struct xlog_rec_header;
 struct xfs_buf_log_format;
 struct xfs_inode_log_format;
 struct xfs_bmbt_irec;
@@ -30,6 +31,10 @@
 struct xfs_refcount_irec;
 struct xfs_fsmap;
 struct xfs_rmap_irec;
+struct xfs_icreate_log;
+struct xfs_owner_info;
+struct xfs_trans_res;
+struct xfs_inobt_rec_incore;
 
 DECLARE_EVENT_CLASS(xfs_attr_list_class,
 	TP_PROTO(struct xfs_attr_list_context *ctx),
@@ -280,7 +285,10 @@
 	),
 	TP_fast_assign(
 		__entry->dev = bp->b_target->bt_dev;
-		__entry->bno = bp->b_bn;
+		if (bp->b_bn == XFS_BUF_DADDR_NULL)
+			__entry->bno = bp->b_maps[0].bm_bn;
+		else
+			__entry->bno = bp->b_bn;
 		__entry->nblks = bp->b_length;
 		__entry->hold = atomic_read(&bp->b_hold);
 		__entry->pincount = atomic_read(&bp->b_pin_count);
@@ -472,7 +480,7 @@
 DEFINE_BUF_ITEM_EVENT(xfs_buf_item_pin);
 DEFINE_BUF_ITEM_EVENT(xfs_buf_item_unpin);
 DEFINE_BUF_ITEM_EVENT(xfs_buf_item_unpin_stale);
-DEFINE_BUF_ITEM_EVENT(xfs_buf_item_unlock);
+DEFINE_BUF_ITEM_EVENT(xfs_buf_item_release);
 DEFINE_BUF_ITEM_EVENT(xfs_buf_item_committed);
 DEFINE_BUF_ITEM_EVENT(xfs_buf_item_push);
 DEFINE_BUF_ITEM_EVENT(xfs_trans_get_buf);
@@ -637,6 +645,16 @@
 DEFINE_INODE_EVENT(xfs_inode_clear_cowblocks_tag);
 DEFINE_INODE_EVENT(xfs_inode_free_cowblocks_invalid);
 
+/*
+ * ftrace's __print_symbolic requires that all enum values be wrapped in the
+ * TRACE_DEFINE_ENUM macro so that the enum value can be encoded in the ftrace
+ * ring buffer.  Somehow this was only worth mentioning in the ftrace sample
+ * code.
+ */
+TRACE_DEFINE_ENUM(PE_SIZE_PTE);
+TRACE_DEFINE_ENUM(PE_SIZE_PMD);
+TRACE_DEFINE_ENUM(PE_SIZE_PUD);
+
 TRACE_EVENT(xfs_filemap_fault,
 	TP_PROTO(struct xfs_inode *ip, enum page_entry_size pe_size,
 		 bool write_fault),
@@ -1207,15 +1225,15 @@
 
 DECLARE_EVENT_CLASS(xfs_imap_class,
 	TP_PROTO(struct xfs_inode *ip, xfs_off_t offset, ssize_t count,
-		 int type, struct xfs_bmbt_irec *irec),
-	TP_ARGS(ip, offset, count, type, irec),
+		 int whichfork, struct xfs_bmbt_irec *irec),
+	TP_ARGS(ip, offset, count, whichfork, irec),
 	TP_STRUCT__entry(
 		__field(dev_t, dev)
 		__field(xfs_ino_t, ino)
 		__field(loff_t, size)
 		__field(loff_t, offset)
 		__field(size_t, count)
-		__field(int, type)
+		__field(int, whichfork)
 		__field(xfs_fileoff_t, startoff)
 		__field(xfs_fsblock_t, startblock)
 		__field(xfs_filblks_t, blockcount)
@@ -1226,33 +1244,33 @@
 		__entry->size = ip->i_d.di_size;
 		__entry->offset = offset;
 		__entry->count = count;
-		__entry->type = type;
+		__entry->whichfork = whichfork;
 		__entry->startoff = irec ? irec->br_startoff : 0;
 		__entry->startblock = irec ? irec->br_startblock : 0;
 		__entry->blockcount = irec ? irec->br_blockcount : 0;
 	),
 	TP_printk("dev %d:%d ino 0x%llx size 0x%llx offset 0x%llx count %zd "
-		  "type %s startoff 0x%llx startblock %lld blockcount 0x%llx",
+		  "fork %s startoff 0x%llx startblock %lld blockcount 0x%llx",
 		  MAJOR(__entry->dev), MINOR(__entry->dev),
 		  __entry->ino,
 		  __entry->size,
 		  __entry->offset,
 		  __entry->count,
-		  __print_symbolic(__entry->type, XFS_IO_TYPES),
+		  __entry->whichfork == XFS_COW_FORK ? "cow" : "data",
 		  __entry->startoff,
 		  (int64_t)__entry->startblock,
 		  __entry->blockcount)
 )
 
-#define DEFINE_IOMAP_EVENT(name)	\
+#define DEFINE_IMAP_EVENT(name)	\
 DEFINE_EVENT(xfs_imap_class, name,	\
 	TP_PROTO(struct xfs_inode *ip, xfs_off_t offset, ssize_t count,	\
-		 int type, struct xfs_bmbt_irec *irec),		\
-	TP_ARGS(ip, offset, count, type, irec))
-DEFINE_IOMAP_EVENT(xfs_map_blocks_found);
-DEFINE_IOMAP_EVENT(xfs_map_blocks_alloc);
-DEFINE_IOMAP_EVENT(xfs_iomap_alloc);
-DEFINE_IOMAP_EVENT(xfs_iomap_found);
+		 int whichfork, struct xfs_bmbt_irec *irec),		\
+	TP_ARGS(ip, offset, count, whichfork, irec))
+DEFINE_IMAP_EVENT(xfs_map_blocks_found);
+DEFINE_IMAP_EVENT(xfs_map_blocks_alloc);
+DEFINE_IMAP_EVENT(xfs_iomap_alloc);
+DEFINE_IMAP_EVENT(xfs_iomap_found);
 
 DECLARE_EVENT_CLASS(xfs_simple_io_class,
 	TP_PROTO(struct xfs_inode *ip, xfs_off_t offset, ssize_t count),
@@ -1882,11 +1900,11 @@
 	{ 0,	"target" }, \
 	{ 1,	"temp" }
 
-#define XFS_INODE_FORMAT_STR \
-	{ 0,	"invalid" }, \
-	{ 1,	"local" }, \
-	{ 2,	"extent" }, \
-	{ 3,	"btree" }
+TRACE_DEFINE_ENUM(XFS_DINODE_FMT_DEV);
+TRACE_DEFINE_ENUM(XFS_DINODE_FMT_LOCAL);
+TRACE_DEFINE_ENUM(XFS_DINODE_FMT_EXTENTS);
+TRACE_DEFINE_ENUM(XFS_DINODE_FMT_BTREE);
+TRACE_DEFINE_ENUM(XFS_DINODE_FMT_UUID);
 
 DECLARE_EVENT_CLASS(xfs_swap_extent_class,
 	TP_PROTO(struct xfs_inode *ip, int which),
@@ -2175,6 +2193,14 @@
 DEFINE_DISCARD_EVENT(xfs_discard_busy);
 
 /* btree cursor events */
+TRACE_DEFINE_ENUM(XFS_BTNUM_BNOi);
+TRACE_DEFINE_ENUM(XFS_BTNUM_CNTi);
+TRACE_DEFINE_ENUM(XFS_BTNUM_BMAPi);
+TRACE_DEFINE_ENUM(XFS_BTNUM_INOi);
+TRACE_DEFINE_ENUM(XFS_BTNUM_FINOi);
+TRACE_DEFINE_ENUM(XFS_BTNUM_RMAPi);
+TRACE_DEFINE_ENUM(XFS_BTNUM_REFCi);
+
 DECLARE_EVENT_CLASS(xfs_btree_cur_class,
 	TP_PROTO(struct xfs_btree_cur *cur, int level, struct xfs_buf *bp),
 	TP_ARGS(cur, level, bp),
@@ -2194,9 +2220,9 @@
 		__entry->ptr = cur->bc_ptrs[level];
 		__entry->daddr = bp ? bp->b_bn : -1;
 	),
-	TP_printk("dev %d:%d btnum %d level %d/%d ptr %d daddr 0x%llx",
+	TP_printk("dev %d:%d btree %s level %d/%d ptr %d daddr 0x%llx",
 		  MAJOR(__entry->dev), MINOR(__entry->dev),
-		  __entry->btnum,
+		  __print_symbolic(__entry->btnum, XFS_BTNUM_STRINGS),
 		  __entry->level,
 		  __entry->nlevels,
 		  __entry->ptr,
@@ -2273,7 +2299,7 @@
 	),
 	TP_fast_assign(
 		__entry->dev = mp ? mp->m_super->s_dev : 0;
-		__entry->type = dfp->dfp_type->type;
+		__entry->type = dfp->dfp_type;
 		__entry->intent = dfp->dfp_intent;
 		__entry->committed = dfp->dfp_done != NULL;
 		__entry->nr = dfp->dfp_count;
@@ -2402,7 +2428,7 @@
 DECLARE_EVENT_CLASS(xfs_rmap_class,
 	TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno,
 		 xfs_agblock_t agbno, xfs_extlen_t len, bool unwritten,
-		 struct xfs_owner_info *oinfo),
+		 const struct xfs_owner_info *oinfo),
 	TP_ARGS(mp, agno, agbno, len, unwritten, oinfo),
 	TP_STRUCT__entry(
 		__field(dev_t, dev)
@@ -2437,7 +2463,7 @@
 DEFINE_EVENT(xfs_rmap_class, name, \
 	TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, \
 		 xfs_agblock_t agbno, xfs_extlen_t len, bool unwritten, \
-		 struct xfs_owner_info *oinfo), \
+		 const struct xfs_owner_info *oinfo), \
 	TP_ARGS(mp, agno, agbno, len, unwritten, oinfo))
 
 /* simple AG-based error/%ip tracepoint class */
@@ -2607,10 +2633,9 @@
 #define DEFINE_AG_EXTENT_EVENT(name) DEFINE_DISCARD_EVENT(name)
 
 /* ag btree lookup tracepoint class */
-#define XFS_AG_BTREE_CMP_FORMAT_STR \
-	{ XFS_LOOKUP_EQ,	"eq" }, \
-	{ XFS_LOOKUP_LE,	"le" }, \
-	{ XFS_LOOKUP_GE,	"ge" }
+TRACE_DEFINE_ENUM(XFS_LOOKUP_EQi);
+TRACE_DEFINE_ENUM(XFS_LOOKUP_LEi);
+TRACE_DEFINE_ENUM(XFS_LOOKUP_GEi);
 DECLARE_EVENT_CLASS(xfs_ag_btree_lookup_class,
 	TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno,
 		 xfs_agblock_t agbno, xfs_lookup_t dir),
@@ -3052,7 +3077,7 @@
 DEFINE_INODE_EVENT(xfs_reflink_set_inode_flag);
 DEFINE_INODE_EVENT(xfs_reflink_unset_inode_flag);
 DEFINE_ITRUNC_EVENT(xfs_reflink_update_inode_size);
-DEFINE_IOMAP_EVENT(xfs_reflink_remap_imap);
+DEFINE_IMAP_EVENT(xfs_reflink_remap_imap);
 TRACE_EVENT(xfs_reflink_remap_blocks_loop,
 	TP_PROTO(struct xfs_inode *src, xfs_fileoff_t soffset,
 		 xfs_filblks_t len, struct xfs_inode *dest,
@@ -3176,13 +3201,10 @@
 
 /* copy on write */
 DEFINE_INODE_IREC_EVENT(xfs_reflink_trim_around_shared);
-DEFINE_INODE_IREC_EVENT(xfs_reflink_cow_alloc);
 DEFINE_INODE_IREC_EVENT(xfs_reflink_cow_found);
 DEFINE_INODE_IREC_EVENT(xfs_reflink_cow_enospc);
 DEFINE_INODE_IREC_EVENT(xfs_reflink_convert_cow);
 
-DEFINE_RW_EVENT(xfs_reflink_reserve_cow);
-
 DEFINE_SIMPLE_IO_EVENT(xfs_reflink_bounce_dio_write);
 
 DEFINE_SIMPLE_IO_EVENT(xfs_reflink_cancel_cow_range);
@@ -3343,8 +3365,250 @@
 DEFINE_TRANS_EVENT(xfs_trans_free);
 DEFINE_TRANS_EVENT(xfs_trans_roll);
 DEFINE_TRANS_EVENT(xfs_trans_add_item);
+DEFINE_TRANS_EVENT(xfs_trans_commit_items);
 DEFINE_TRANS_EVENT(xfs_trans_free_items);
 
+TRACE_EVENT(xfs_iunlink_update_bucket,
+	TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, unsigned int bucket,
+		 xfs_agino_t old_ptr, xfs_agino_t new_ptr),
+	TP_ARGS(mp, agno, bucket, old_ptr, new_ptr),
+	TP_STRUCT__entry(
+		__field(dev_t, dev)
+		__field(xfs_agnumber_t, agno)
+		__field(unsigned int, bucket)
+		__field(xfs_agino_t, old_ptr)
+		__field(xfs_agino_t, new_ptr)
+	),
+	TP_fast_assign(
+		__entry->dev = mp->m_super->s_dev;
+		__entry->agno = agno;
+		__entry->bucket = bucket;
+		__entry->old_ptr = old_ptr;
+		__entry->new_ptr = new_ptr;
+	),
+	TP_printk("dev %d:%d agno %u bucket %u old 0x%x new 0x%x",
+		  MAJOR(__entry->dev), MINOR(__entry->dev),
+		  __entry->agno,
+		  __entry->bucket,
+		  __entry->old_ptr,
+		  __entry->new_ptr)
+);
+
+TRACE_EVENT(xfs_iunlink_update_dinode,
+	TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, xfs_agino_t agino,
+		 xfs_agino_t old_ptr, xfs_agino_t new_ptr),
+	TP_ARGS(mp, agno, agino, old_ptr, new_ptr),
+	TP_STRUCT__entry(
+		__field(dev_t, dev)
+		__field(xfs_agnumber_t, agno)
+		__field(xfs_agino_t, agino)
+		__field(xfs_agino_t, old_ptr)
+		__field(xfs_agino_t, new_ptr)
+	),
+	TP_fast_assign(
+		__entry->dev = mp->m_super->s_dev;
+		__entry->agno = agno;
+		__entry->agino = agino;
+		__entry->old_ptr = old_ptr;
+		__entry->new_ptr = new_ptr;
+	),
+	TP_printk("dev %d:%d agno %u agino 0x%x old 0x%x new 0x%x",
+		  MAJOR(__entry->dev), MINOR(__entry->dev),
+		  __entry->agno,
+		  __entry->agino,
+		  __entry->old_ptr,
+		  __entry->new_ptr)
+);
+
+DECLARE_EVENT_CLASS(xfs_ag_inode_class,
+	TP_PROTO(struct xfs_inode *ip),
+	TP_ARGS(ip),
+	TP_STRUCT__entry(
+		__field(dev_t, dev)
+		__field(xfs_agnumber_t, agno)
+		__field(xfs_agino_t, agino)
+	),
+	TP_fast_assign(
+		__entry->dev = VFS_I(ip)->i_sb->s_dev;
+		__entry->agno = XFS_INO_TO_AGNO(ip->i_mount, ip->i_ino);
+		__entry->agino = XFS_INO_TO_AGINO(ip->i_mount, ip->i_ino);
+	),
+	TP_printk("dev %d:%d agno %u agino %u",
+		  MAJOR(__entry->dev), MINOR(__entry->dev),
+		  __entry->agno, __entry->agino)
+)
+
+#define DEFINE_AGINODE_EVENT(name) \
+DEFINE_EVENT(xfs_ag_inode_class, name, \
+	TP_PROTO(struct xfs_inode *ip), \
+	TP_ARGS(ip))
+DEFINE_AGINODE_EVENT(xfs_iunlink);
+DEFINE_AGINODE_EVENT(xfs_iunlink_remove);
+DEFINE_AG_EVENT(xfs_iunlink_map_prev_fallback);
+
+DECLARE_EVENT_CLASS(xfs_fs_corrupt_class,
+	TP_PROTO(struct xfs_mount *mp, unsigned int flags),
+	TP_ARGS(mp, flags),
+	TP_STRUCT__entry(
+		__field(dev_t, dev)
+		__field(unsigned int, flags)
+	),
+	TP_fast_assign(
+		__entry->dev = mp->m_super->s_dev;
+		__entry->flags = flags;
+	),
+	TP_printk("dev %d:%d flags 0x%x",
+		  MAJOR(__entry->dev), MINOR(__entry->dev),
+		  __entry->flags)
+);
+#define DEFINE_FS_CORRUPT_EVENT(name)	\
+DEFINE_EVENT(xfs_fs_corrupt_class, name,	\
+	TP_PROTO(struct xfs_mount *mp, unsigned int flags), \
+	TP_ARGS(mp, flags))
+DEFINE_FS_CORRUPT_EVENT(xfs_fs_mark_sick);
+DEFINE_FS_CORRUPT_EVENT(xfs_fs_mark_healthy);
+DEFINE_FS_CORRUPT_EVENT(xfs_fs_unfixed_corruption);
+DEFINE_FS_CORRUPT_EVENT(xfs_rt_mark_sick);
+DEFINE_FS_CORRUPT_EVENT(xfs_rt_mark_healthy);
+DEFINE_FS_CORRUPT_EVENT(xfs_rt_unfixed_corruption);
+
+DECLARE_EVENT_CLASS(xfs_ag_corrupt_class,
+	TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, unsigned int flags),
+	TP_ARGS(mp, agno, flags),
+	TP_STRUCT__entry(
+		__field(dev_t, dev)
+		__field(xfs_agnumber_t, agno)
+		__field(unsigned int, flags)
+	),
+	TP_fast_assign(
+		__entry->dev = mp->m_super->s_dev;
+		__entry->agno = agno;
+		__entry->flags = flags;
+	),
+	TP_printk("dev %d:%d agno %u flags 0x%x",
+		  MAJOR(__entry->dev), MINOR(__entry->dev),
+		  __entry->agno, __entry->flags)
+);
+#define DEFINE_AG_CORRUPT_EVENT(name)	\
+DEFINE_EVENT(xfs_ag_corrupt_class, name,	\
+	TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, \
+		 unsigned int flags), \
+	TP_ARGS(mp, agno, flags))
+DEFINE_AG_CORRUPT_EVENT(xfs_ag_mark_sick);
+DEFINE_AG_CORRUPT_EVENT(xfs_ag_mark_healthy);
+DEFINE_AG_CORRUPT_EVENT(xfs_ag_unfixed_corruption);
+
+DECLARE_EVENT_CLASS(xfs_inode_corrupt_class,
+	TP_PROTO(struct xfs_inode *ip, unsigned int flags),
+	TP_ARGS(ip, flags),
+	TP_STRUCT__entry(
+		__field(dev_t, dev)
+		__field(xfs_ino_t, ino)
+		__field(unsigned int, flags)
+	),
+	TP_fast_assign(
+		__entry->dev = ip->i_mount->m_super->s_dev;
+		__entry->ino = ip->i_ino;
+		__entry->flags = flags;
+	),
+	TP_printk("dev %d:%d ino 0x%llx flags 0x%x",
+		  MAJOR(__entry->dev), MINOR(__entry->dev),
+		  __entry->ino, __entry->flags)
+);
+#define DEFINE_INODE_CORRUPT_EVENT(name)	\
+DEFINE_EVENT(xfs_inode_corrupt_class, name,	\
+	TP_PROTO(struct xfs_inode *ip, unsigned int flags), \
+	TP_ARGS(ip, flags))
+DEFINE_INODE_CORRUPT_EVENT(xfs_inode_mark_sick);
+DEFINE_INODE_CORRUPT_EVENT(xfs_inode_mark_healthy);
+
+TRACE_EVENT(xfs_iwalk_ag,
+	TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno,
+		 xfs_agino_t startino),
+	TP_ARGS(mp, agno, startino),
+	TP_STRUCT__entry(
+		__field(dev_t, dev)
+		__field(xfs_agnumber_t, agno)
+		__field(xfs_agino_t, startino)
+	),
+	TP_fast_assign(
+		__entry->dev = mp->m_super->s_dev;
+		__entry->agno = agno;
+		__entry->startino = startino;
+	),
+	TP_printk("dev %d:%d agno %d startino %u",
+		  MAJOR(__entry->dev), MINOR(__entry->dev), __entry->agno,
+		  __entry->startino)
+)
+
+TRACE_EVENT(xfs_iwalk_ag_rec,
+	TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno,
+		 struct xfs_inobt_rec_incore *irec),
+	TP_ARGS(mp, agno, irec),
+	TP_STRUCT__entry(
+		__field(dev_t, dev)
+		__field(xfs_agnumber_t, agno)
+		__field(xfs_agino_t, startino)
+		__field(uint64_t, freemask)
+	),
+	TP_fast_assign(
+		__entry->dev = mp->m_super->s_dev;
+		__entry->agno = agno;
+		__entry->startino = irec->ir_startino;
+		__entry->freemask = irec->ir_free;
+	),
+	TP_printk("dev %d:%d agno %d startino %u freemask 0x%llx",
+		  MAJOR(__entry->dev), MINOR(__entry->dev), __entry->agno,
+		  __entry->startino, __entry->freemask)
+)
+
+TRACE_EVENT(xfs_pwork_init,
+	TP_PROTO(struct xfs_mount *mp, unsigned int nr_threads, pid_t pid),
+	TP_ARGS(mp, nr_threads, pid),
+	TP_STRUCT__entry(
+		__field(dev_t, dev)
+		__field(unsigned int, nr_threads)
+		__field(pid_t, pid)
+	),
+	TP_fast_assign(
+		__entry->dev = mp->m_super->s_dev;
+		__entry->nr_threads = nr_threads;
+		__entry->pid = pid;
+	),
+	TP_printk("dev %d:%d nr_threads %u pid %u",
+		  MAJOR(__entry->dev), MINOR(__entry->dev),
+		  __entry->nr_threads, __entry->pid)
+)
+
+DECLARE_EVENT_CLASS(xfs_kmem_class,
+	TP_PROTO(ssize_t size, int flags, unsigned long caller_ip),
+	TP_ARGS(size, flags, caller_ip),
+	TP_STRUCT__entry(
+		__field(ssize_t, size)
+		__field(int, flags)
+		__field(unsigned long, caller_ip)
+	),
+	TP_fast_assign(
+		__entry->size = size;
+		__entry->flags = flags;
+		__entry->caller_ip = caller_ip;
+	),
+	TP_printk("size %zd flags 0x%x caller %pS",
+		  __entry->size,
+		  __entry->flags,
+		  (char *)__entry->caller_ip)
+)
+
+#define DEFINE_KMEM_EVENT(name) \
+DEFINE_EVENT(xfs_kmem_class, name, \
+	TP_PROTO(ssize_t size, int flags, unsigned long caller_ip), \
+	TP_ARGS(size, flags, caller_ip))
+DEFINE_KMEM_EVENT(kmem_alloc);
+DEFINE_KMEM_EVENT(kmem_alloc_io);
+DEFINE_KMEM_EVENT(kmem_alloc_large);
+DEFINE_KMEM_EVENT(kmem_realloc);
+DEFINE_KMEM_EVENT(kmem_zone_alloc);
+
 #endif /* _TRACE_XFS_H */
 
 #undef TRACE_INCLUDE_PATH