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![Ritesh Harjani (IBM)](/assets/img/avatar_default.png)
Add trace_iomap_dio_rw_begin, trace_iomap_dio_rw_queued and trace_iomap_dio_complete tracepoint. trace_iomap_dio_rw_queued is mostly only to know that the request was queued and -EIOCBQUEUED was returned. It is mostly trace_iomap_dio_rw_begin & trace_iomap_dio_complete which has all the details. <example output log> a.out-2073 [006] 134.225717: iomap_dio_rw_begin: dev 7:7 ino 0xe size 0x0 offset 0x0 length 0x1000 done_before 0x0 flags DIRECT|WRITE dio_flags DIO_FORCE_WAIT aio 1 a.out-2073 [006] 134.226234: iomap_dio_complete: dev 7:7 ino 0xe size 0x1000 offset 0x1000 flags DIRECT|WRITE aio 1 error 0 ret 4096 a.out-2074 [006] 136.225975: iomap_dio_rw_begin: dev 7:7 ino 0xe size 0x1000 offset 0x0 length 0x1000 done_before 0x0 flags DIRECT dio_flags aio 1 a.out-2074 [006] 136.226173: iomap_dio_rw_queued: dev 7:7 ino 0xe size 0x1000 offset 0x1000 length 0x0 ksoftirqd/3-31 [003] 136.226389: iomap_dio_complete: dev 7:7 ino 0xe size 0x1000 offset 0x1000 flags DIRECT aio 1 error 0 ret 4096 a.out-2075 [003] 141.674969: iomap_dio_rw_begin: dev 7:7 ino 0xe size 0x1000 offset 0x0 length 0x1000 done_before 0x0 flags DIRECT|WRITE dio_flags aio 1 a.out-2075 [003] 141.676085: iomap_dio_rw_queued: dev 7:7 ino 0xe size 0x1000 offset 0x1000 length 0x0 kworker/2:0-27 [002] 141.676432: iomap_dio_complete: dev 7:7 ino 0xe size 0x1000 offset 0x1000 flags DIRECT|WRITE aio 1 error 0 ret 4096 a.out-2077 [006] 143.443746: iomap_dio_rw_begin: dev 7:7 ino 0xe size 0x1000 offset 0x0 length 0x1000 done_before 0x0 flags DIRECT dio_flags aio 1 a.out-2077 [006] 143.443866: iomap_dio_rw_queued: dev 7:7 ino 0xe size 0x1000 offset 0x1000 length 0x0 ksoftirqd/5-41 [005] 143.444134: iomap_dio_complete: dev 7:7 ino 0xe size 0x1000 offset 0x1000 flags DIRECT aio 1 error 0 ret 4096 a.out-2078 [007] 146.716833: iomap_dio_rw_begin: dev 7:7 ino 0xe size 0x1000 offset 0x0 length 0x1000 done_before 0x0 flags DIRECT dio_flags aio 0 a.out-2078 [007] 146.717639: iomap_dio_complete: dev 7:7 ino 0xe size 0x1000 offset 0x1000 flags DIRECT aio 0 error 0 ret 4096 a.out-2079 [006] 148.972605: iomap_dio_rw_begin: dev 7:7 ino 0xe size 0x1000 offset 0x0 length 0x1000 done_before 0x0 flags DIRECT dio_flags aio 0 a.out-2079 [006] 148.973099: iomap_dio_complete: dev 7:7 ino 0xe size 0x1000 offset 0x1000 flags DIRECT aio 0 error 0 ret 4096 Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> [djwong: line up strings all prettylike] Signed-off-by: Darrick J. Wong <djwong@kernel.org>
269 lines
7.6 KiB
C
269 lines
7.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2009-2021 Christoph Hellwig
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*
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* NOTE: none of these tracepoints shall be considered a stable kernel ABI
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* as they can change at any time.
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*
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* Current conventions for printing numbers measuring specific units:
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*
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* offset: byte offset into a subcomponent of a file operation
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* pos: file offset, in bytes
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* length: length of a file operation, in bytes
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* ino: inode number
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*
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* Numbers describing space allocations should be formatted in hexadecimal.
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*/
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM iomap
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#if !defined(_IOMAP_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _IOMAP_TRACE_H
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#include <linux/tracepoint.h>
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struct inode;
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DECLARE_EVENT_CLASS(iomap_readpage_class,
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TP_PROTO(struct inode *inode, int nr_pages),
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TP_ARGS(inode, nr_pages),
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TP_STRUCT__entry(
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__field(dev_t, dev)
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__field(u64, ino)
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__field(int, nr_pages)
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),
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TP_fast_assign(
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__entry->dev = inode->i_sb->s_dev;
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__entry->ino = inode->i_ino;
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__entry->nr_pages = nr_pages;
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),
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TP_printk("dev %d:%d ino 0x%llx nr_pages %d",
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MAJOR(__entry->dev), MINOR(__entry->dev),
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__entry->ino,
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__entry->nr_pages)
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)
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#define DEFINE_READPAGE_EVENT(name) \
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DEFINE_EVENT(iomap_readpage_class, name, \
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TP_PROTO(struct inode *inode, int nr_pages), \
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TP_ARGS(inode, nr_pages))
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DEFINE_READPAGE_EVENT(iomap_readpage);
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DEFINE_READPAGE_EVENT(iomap_readahead);
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DECLARE_EVENT_CLASS(iomap_range_class,
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TP_PROTO(struct inode *inode, loff_t off, u64 len),
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TP_ARGS(inode, off, len),
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TP_STRUCT__entry(
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__field(dev_t, dev)
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__field(u64, ino)
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__field(loff_t, size)
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__field(loff_t, offset)
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__field(u64, length)
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),
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TP_fast_assign(
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__entry->dev = inode->i_sb->s_dev;
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__entry->ino = inode->i_ino;
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__entry->size = i_size_read(inode);
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__entry->offset = off;
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__entry->length = len;
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),
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TP_printk("dev %d:%d ino 0x%llx size 0x%llx offset 0x%llx length 0x%llx",
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MAJOR(__entry->dev), MINOR(__entry->dev),
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__entry->ino,
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__entry->size,
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__entry->offset,
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__entry->length)
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)
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#define DEFINE_RANGE_EVENT(name) \
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DEFINE_EVENT(iomap_range_class, name, \
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TP_PROTO(struct inode *inode, loff_t off, u64 len),\
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TP_ARGS(inode, off, len))
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DEFINE_RANGE_EVENT(iomap_writepage);
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DEFINE_RANGE_EVENT(iomap_release_folio);
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DEFINE_RANGE_EVENT(iomap_invalidate_folio);
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DEFINE_RANGE_EVENT(iomap_dio_invalidate_fail);
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DEFINE_RANGE_EVENT(iomap_dio_rw_queued);
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#define IOMAP_TYPE_STRINGS \
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{ IOMAP_HOLE, "HOLE" }, \
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{ IOMAP_DELALLOC, "DELALLOC" }, \
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{ IOMAP_MAPPED, "MAPPED" }, \
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{ IOMAP_UNWRITTEN, "UNWRITTEN" }, \
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{ IOMAP_INLINE, "INLINE" }
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#define IOMAP_FLAGS_STRINGS \
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{ IOMAP_WRITE, "WRITE" }, \
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{ IOMAP_ZERO, "ZERO" }, \
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{ IOMAP_REPORT, "REPORT" }, \
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{ IOMAP_FAULT, "FAULT" }, \
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{ IOMAP_DIRECT, "DIRECT" }, \
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{ IOMAP_NOWAIT, "NOWAIT" }
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#define IOMAP_F_FLAGS_STRINGS \
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{ IOMAP_F_NEW, "NEW" }, \
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{ IOMAP_F_DIRTY, "DIRTY" }, \
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{ IOMAP_F_SHARED, "SHARED" }, \
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{ IOMAP_F_MERGED, "MERGED" }, \
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{ IOMAP_F_BUFFER_HEAD, "BH" }, \
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{ IOMAP_F_SIZE_CHANGED, "SIZE_CHANGED" }
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#define IOMAP_DIO_STRINGS \
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{IOMAP_DIO_FORCE_WAIT, "DIO_FORCE_WAIT" }, \
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{IOMAP_DIO_OVERWRITE_ONLY, "DIO_OVERWRITE_ONLY" }, \
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{IOMAP_DIO_PARTIAL, "DIO_PARTIAL" }
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DECLARE_EVENT_CLASS(iomap_class,
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TP_PROTO(struct inode *inode, struct iomap *iomap),
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TP_ARGS(inode, iomap),
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TP_STRUCT__entry(
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__field(dev_t, dev)
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__field(u64, ino)
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__field(u64, addr)
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__field(loff_t, offset)
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__field(u64, length)
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__field(u16, type)
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__field(u16, flags)
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__field(dev_t, bdev)
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),
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TP_fast_assign(
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__entry->dev = inode->i_sb->s_dev;
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__entry->ino = inode->i_ino;
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__entry->addr = iomap->addr;
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__entry->offset = iomap->offset;
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__entry->length = iomap->length;
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__entry->type = iomap->type;
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__entry->flags = iomap->flags;
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__entry->bdev = iomap->bdev ? iomap->bdev->bd_dev : 0;
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),
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TP_printk("dev %d:%d ino 0x%llx bdev %d:%d addr 0x%llx offset 0x%llx "
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"length 0x%llx type %s flags %s",
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MAJOR(__entry->dev), MINOR(__entry->dev),
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__entry->ino,
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MAJOR(__entry->bdev), MINOR(__entry->bdev),
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__entry->addr,
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__entry->offset,
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__entry->length,
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__print_symbolic(__entry->type, IOMAP_TYPE_STRINGS),
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__print_flags(__entry->flags, "|", IOMAP_F_FLAGS_STRINGS))
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)
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#define DEFINE_IOMAP_EVENT(name) \
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DEFINE_EVENT(iomap_class, name, \
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TP_PROTO(struct inode *inode, struct iomap *iomap), \
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TP_ARGS(inode, iomap))
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DEFINE_IOMAP_EVENT(iomap_iter_dstmap);
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DEFINE_IOMAP_EVENT(iomap_iter_srcmap);
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DEFINE_IOMAP_EVENT(iomap_writepage_map);
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TRACE_EVENT(iomap_iter,
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TP_PROTO(struct iomap_iter *iter, const void *ops,
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unsigned long caller),
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TP_ARGS(iter, ops, caller),
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TP_STRUCT__entry(
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__field(dev_t, dev)
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__field(u64, ino)
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__field(loff_t, pos)
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__field(u64, length)
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__field(unsigned int, flags)
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__field(const void *, ops)
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__field(unsigned long, caller)
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),
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TP_fast_assign(
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__entry->dev = iter->inode->i_sb->s_dev;
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__entry->ino = iter->inode->i_ino;
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__entry->pos = iter->pos;
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__entry->length = iomap_length(iter);
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__entry->flags = iter->flags;
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__entry->ops = ops;
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__entry->caller = caller;
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),
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TP_printk("dev %d:%d ino 0x%llx pos 0x%llx length 0x%llx flags %s (0x%x) ops %ps caller %pS",
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MAJOR(__entry->dev), MINOR(__entry->dev),
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__entry->ino,
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__entry->pos,
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__entry->length,
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__print_flags(__entry->flags, "|", IOMAP_FLAGS_STRINGS),
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__entry->flags,
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__entry->ops,
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(void *)__entry->caller)
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);
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TRACE_EVENT(iomap_dio_rw_begin,
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TP_PROTO(struct kiocb *iocb, struct iov_iter *iter,
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unsigned int dio_flags, size_t done_before),
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TP_ARGS(iocb, iter, dio_flags, done_before),
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TP_STRUCT__entry(
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__field(dev_t, dev)
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__field(ino_t, ino)
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__field(loff_t, isize)
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__field(loff_t, pos)
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__field(size_t, count)
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__field(size_t, done_before)
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__field(int, ki_flags)
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__field(unsigned int, dio_flags)
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__field(bool, aio)
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),
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TP_fast_assign(
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__entry->dev = file_inode(iocb->ki_filp)->i_sb->s_dev;
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__entry->ino = file_inode(iocb->ki_filp)->i_ino;
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__entry->isize = file_inode(iocb->ki_filp)->i_size;
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__entry->pos = iocb->ki_pos;
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__entry->count = iov_iter_count(iter);
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__entry->done_before = done_before;
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__entry->ki_flags = iocb->ki_flags;
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__entry->dio_flags = dio_flags;
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__entry->aio = !is_sync_kiocb(iocb);
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),
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TP_printk("dev %d:%d ino 0x%lx size 0x%llx offset 0x%llx length 0x%zx done_before 0x%zx flags %s dio_flags %s aio %d",
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MAJOR(__entry->dev), MINOR(__entry->dev),
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__entry->ino,
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__entry->isize,
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__entry->pos,
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__entry->count,
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__entry->done_before,
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__print_flags(__entry->ki_flags, "|", TRACE_IOCB_STRINGS),
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__print_flags(__entry->dio_flags, "|", IOMAP_DIO_STRINGS),
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__entry->aio)
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);
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TRACE_EVENT(iomap_dio_complete,
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TP_PROTO(struct kiocb *iocb, int error, ssize_t ret),
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TP_ARGS(iocb, error, ret),
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TP_STRUCT__entry(
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__field(dev_t, dev)
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__field(ino_t, ino)
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__field(loff_t, isize)
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__field(loff_t, pos)
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__field(int, ki_flags)
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__field(bool, aio)
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__field(int, error)
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__field(ssize_t, ret)
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),
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TP_fast_assign(
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__entry->dev = file_inode(iocb->ki_filp)->i_sb->s_dev;
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__entry->ino = file_inode(iocb->ki_filp)->i_ino;
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__entry->isize = file_inode(iocb->ki_filp)->i_size;
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__entry->pos = iocb->ki_pos;
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__entry->ki_flags = iocb->ki_flags;
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__entry->aio = !is_sync_kiocb(iocb);
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__entry->error = error;
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__entry->ret = ret;
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),
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TP_printk("dev %d:%d ino 0x%lx size 0x%llx offset 0x%llx flags %s aio %d error %d ret %zd",
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MAJOR(__entry->dev), MINOR(__entry->dev),
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__entry->ino,
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__entry->isize,
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__entry->pos,
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__print_flags(__entry->ki_flags, "|", TRACE_IOCB_STRINGS),
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__entry->aio,
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__entry->error,
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__entry->ret)
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);
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#endif /* _IOMAP_TRACE_H */
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#undef TRACE_INCLUDE_PATH
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#define TRACE_INCLUDE_PATH .
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#define TRACE_INCLUDE_FILE trace
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#include <trace/define_trace.h>
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