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zonefs: add tracepoints for file operations
Add tracepoints for file I/O operations to aid in debugging of I/O errors with zonefs. The added tracepoints are in: - zonefs_zone_mgmt() for tracing zone management operations - zonefs_iomap_begin() for tracing regular file I/O - zonefs_file_dio_append() for tracing zone-append operations Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
This commit is contained in:
Johannes Thumshirn
Damien Le Moal
parent
6ee1d745b7
commit
62ab1aadcc
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@ -1,4 +1,6 @@
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# SPDX-License-Identifier: GPL-2.0
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ccflags-y += -I$(src)
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obj-$(CONFIG_ZONEFS_FS) += zonefs.o
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zonefs-y := super.o
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@ -24,6 +24,9 @@
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#include "zonefs.h"
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#define CREATE_TRACE_POINTS
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#include "trace.h"
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static inline int zonefs_zone_mgmt(struct inode *inode,
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enum req_opf op)
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{
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@ -32,6 +35,7 @@ static inline int zonefs_zone_mgmt(struct inode *inode,
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lockdep_assert_held(&zi->i_truncate_mutex);
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trace_zonefs_zone_mgmt(inode, op);
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ret = blkdev_zone_mgmt(inode->i_sb->s_bdev, op, zi->i_zsector,
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zi->i_zone_size >> SECTOR_SHIFT, GFP_NOFS);
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if (ret) {
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@ -100,6 +104,8 @@ static int zonefs_iomap_begin(struct inode *inode, loff_t offset, loff_t length,
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iomap->bdev = inode->i_sb->s_bdev;
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iomap->addr = (zi->i_zsector << SECTOR_SHIFT) + iomap->offset;
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trace_zonefs_iomap_begin(inode, iomap);
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return 0;
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}
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@ -703,6 +709,7 @@ static ssize_t zonefs_file_dio_append(struct kiocb *iocb, struct iov_iter *from)
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ret = submit_bio_wait(bio);
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zonefs_file_write_dio_end_io(iocb, size, ret, 0);
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trace_zonefs_file_dio_append(inode, size, ret);
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out_release:
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bio_release_pages(bio, false);
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@ -0,0 +1,104 @@
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* zonefs filesystem driver tracepoints.
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*
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* Copyright (C) 2021 Western Digital Corporation or its affiliates.
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*/
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM zonefs
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#if !defined(_TRACE_ZONEFS_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_ZONEFS_H
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#include <linux/tracepoint.h>
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#include <linux/trace_seq.h>
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#include <linux/blkdev.h>
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#include "zonefs.h"
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#define show_dev(dev) MAJOR(dev), MINOR(dev)
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TRACE_EVENT(zonefs_zone_mgmt,
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TP_PROTO(struct inode *inode, enum req_opf op),
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TP_ARGS(inode, op),
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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(int, op)
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__field(sector_t, sector)
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__field(sector_t, nr_sectors)
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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->op = op;
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__entry->sector = ZONEFS_I(inode)->i_zsector;
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__entry->nr_sectors =
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ZONEFS_I(inode)->i_zone_size >> SECTOR_SHIFT;
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),
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TP_printk("bdev=(%d,%d), ino=%lu op=%s, sector=%llu, nr_sectors=%llu",
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show_dev(__entry->dev), (unsigned long)__entry->ino,
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blk_op_str(__entry->op), __entry->sector,
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__entry->nr_sectors
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)
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);
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TRACE_EVENT(zonefs_file_dio_append,
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TP_PROTO(struct inode *inode, ssize_t size, ssize_t ret),
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TP_ARGS(inode, size, 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(sector_t, sector)
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__field(ssize_t, size)
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__field(loff_t, wpoffset)
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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 = inode->i_sb->s_dev;
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__entry->ino = inode->i_ino;
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__entry->sector = ZONEFS_I(inode)->i_zsector;
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__entry->size = size;
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__entry->wpoffset = ZONEFS_I(inode)->i_wpoffset;
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__entry->ret = ret;
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),
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TP_printk("bdev=(%d, %d), ino=%lu, sector=%llu, size=%zu, wpoffset=%llu, ret=%zu",
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show_dev(__entry->dev), (unsigned long)__entry->ino,
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__entry->sector, __entry->size, __entry->wpoffset,
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__entry->ret
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)
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);
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TRACE_EVENT(zonefs_iomap_begin,
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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(ino_t, 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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),
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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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),
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TP_printk("bdev=(%d,%d), ino=%lu, addr=%llu, offset=%llu, length=%llu",
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show_dev(__entry->dev), (unsigned long)__entry->ino,
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__entry->addr, __entry->offset, __entry->length
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)
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);
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#endif /* _TRACE_ZONEFS_H */
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#undef TRACE_INCLUDE_PATH
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#define TRACE_INCLUDE_PATH .
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#undef TRACE_INCLUDE_FILE
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#define TRACE_INCLUDE_FILE trace
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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