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iomap: lift common tracing code from xfs to iomap

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Lift the xfs code for tracing address space operations to the iomap
layer.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Christoph Hellwig
2019-10-17 13:12:13 -07:00
committed by Darrick J. Wong
parent 009d8d849d
commit 9e91c5728c
6 changed files with 120 additions and 57 deletions
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87
fs/iomap/trace.h Normal file
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@@ -0,0 +1,87 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2009-2019 Christoph Hellwig
*
* NOTE: none of these tracepoints shall be consider a stable kernel ABI
* as they can change at any time.
*/
#undef TRACE_SYSTEM
#define TRACE_SYSTEM iomap
#if !defined(_IOMAP_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
#define _IOMAP_TRACE_H
#include <linux/tracepoint.h>
struct inode;
DECLARE_EVENT_CLASS(iomap_readpage_class,
TP_PROTO(struct inode *inode, int nr_pages),
TP_ARGS(inode, nr_pages),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(u64, ino)
__field(int, nr_pages)
),
TP_fast_assign(
__entry->dev = inode->i_sb->s_dev;
__entry->ino = inode->i_ino;
__entry->nr_pages = nr_pages;
),
TP_printk("dev %d:%d ino 0x%llx nr_pages %d",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->ino,
__entry->nr_pages)
)
#define DEFINE_READPAGE_EVENT(name) \
DEFINE_EVENT(iomap_readpage_class, name, \
TP_PROTO(struct inode *inode, int nr_pages), \
TP_ARGS(inode, nr_pages))
DEFINE_READPAGE_EVENT(iomap_readpage);
DEFINE_READPAGE_EVENT(iomap_readpages);
DECLARE_EVENT_CLASS(iomap_page_class,
TP_PROTO(struct inode *inode, struct page *page, unsigned long off,
unsigned int len),
TP_ARGS(inode, page, off, len),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(u64, ino)
__field(pgoff_t, pgoff)
__field(loff_t, size)
__field(unsigned long, offset)
__field(unsigned int, length)
),
TP_fast_assign(
__entry->dev = inode->i_sb->s_dev;
__entry->ino = inode->i_ino;
__entry->pgoff = page_offset(page);
__entry->size = i_size_read(inode);
__entry->offset = off;
__entry->length = len;
),
TP_printk("dev %d:%d ino 0x%llx pgoff 0x%lx size 0x%llx offset %lx "
"length %x",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->ino,
__entry->pgoff,
__entry->size,
__entry->offset,
__entry->length)
)
#define DEFINE_PAGE_EVENT(name) \
DEFINE_EVENT(iomap_page_class, name, \
TP_PROTO(struct inode *inode, struct page *page, unsigned long off, \
unsigned int len), \
TP_ARGS(inode, page, off, len))
DEFINE_PAGE_EVENT(iomap_releasepage);
DEFINE_PAGE_EVENT(iomap_invalidatepage);
#endif /* _IOMAP_TRACE_H */
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
#define TRACE_INCLUDE_FILE trace
#include <trace/define_trace.h>