diff options
| author | Christoph Hellwig <hch@lst.de> | 2019-10-17 13:12:13 -0700 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2019-10-21 08:51:59 -0700 |
| commit | 9e91c5728cab3d0aa3197d009c3d63e147914e77 (patch) | |
| tree | eb960f8585e9332eeef0ebb9f94becbb08d07eb2 /fs/iomap/trace.h | |
| parent | 009d8d849d3ff59b1a23d2df2c55f2130b2ec7f2 (diff) | |
| download | lwn-9e91c5728cab3d0aa3197d009c3d63e147914e77.tar.gz lwn-9e91c5728cab3d0aa3197d009c3d63e147914e77.zip | |
iomap: lift common tracing code from xfs to iomap
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>
Diffstat (limited to 'fs/iomap/trace.h')
| -rw-r--r-- | fs/iomap/trace.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/fs/iomap/trace.h b/fs/iomap/trace.h new file mode 100644 index 000000000000..63a98ad01b0f --- /dev/null +++ b/fs/iomap/trace.h @@ -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> |