8326be9e51
commit 93368aab0efc87288cac65e99c9ed2e0ffc9e7d0 upstream.
Fix up a misuse that the filename pointer isn't always valid in
the ring buffer, and we should copy the content instead.
Link: https://lore.kernel.org/r/20210921143531.81356-1-hsiangkao@linux.alibaba.com
Fixes: 13f06f48f7 ("staging: erofs: support tracepoint")
Cc: stable@vger.kernel.org # 4.19+
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
260 lines
6.2 KiB
C
260 lines
6.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM erofs
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#if !defined(_TRACE_EROFS_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_EROFS_H
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#include <linux/tracepoint.h>
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#include <linux/fs.h>
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struct erofs_map_blocks;
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#define show_dev(dev) MAJOR(dev), MINOR(dev)
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#define show_dev_nid(entry) show_dev(entry->dev), entry->nid
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#define show_file_type(type) \
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__print_symbolic(type, \
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{ 0, "FILE" }, \
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{ 1, "DIR" })
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#define show_map_flags(flags) __print_flags(flags, "|", \
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{ EROFS_GET_BLOCKS_RAW, "RAW" })
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#define show_mflags(flags) __print_flags(flags, "", \
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{ EROFS_MAP_MAPPED, "M" }, \
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{ EROFS_MAP_META, "I" }, \
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{ EROFS_MAP_ZIPPED, "Z" })
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TRACE_EVENT(erofs_lookup,
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TP_PROTO(struct inode *dir, struct dentry *dentry, unsigned int flags),
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TP_ARGS(dir, dentry, flags),
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TP_STRUCT__entry(
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__field(dev_t, dev )
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__field(erofs_nid_t, nid )
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__string(name, dentry->d_name.name )
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__field(unsigned int, flags )
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),
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TP_fast_assign(
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__entry->dev = dir->i_sb->s_dev;
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__entry->nid = EROFS_I(dir)->nid;
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__assign_str(name, dentry->d_name.name);
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__entry->flags = flags;
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),
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TP_printk("dev = (%d,%d), pnid = %llu, name:%s, flags:%x",
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show_dev_nid(__entry),
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__get_str(name),
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__entry->flags)
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);
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TRACE_EVENT(erofs_fill_inode,
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TP_PROTO(struct inode *inode, int isdir),
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TP_ARGS(inode, isdir),
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TP_STRUCT__entry(
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__field(dev_t, dev )
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__field(erofs_nid_t, nid )
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__field(erofs_blk_t, blkaddr )
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__field(unsigned int, ofs )
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__field(int, isdir )
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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->nid = EROFS_I(inode)->nid;
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__entry->blkaddr = erofs_blknr(iloc(EROFS_I_SB(inode), __entry->nid));
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__entry->ofs = erofs_blkoff(iloc(EROFS_I_SB(inode), __entry->nid));
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__entry->isdir = isdir;
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),
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TP_printk("dev = (%d,%d), nid = %llu, blkaddr %u ofs %u, isdir %d",
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show_dev_nid(__entry),
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__entry->blkaddr, __entry->ofs,
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__entry->isdir)
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);
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TRACE_EVENT(erofs_readpage,
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TP_PROTO(struct page *page, bool raw),
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TP_ARGS(page, raw),
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TP_STRUCT__entry(
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__field(dev_t, dev )
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__field(erofs_nid_t, nid )
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__field(int, dir )
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__field(pgoff_t, index )
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__field(int, uptodate)
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__field(bool, raw )
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),
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TP_fast_assign(
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__entry->dev = page->mapping->host->i_sb->s_dev;
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__entry->nid = EROFS_I(page->mapping->host)->nid;
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__entry->dir = S_ISDIR(page->mapping->host->i_mode);
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__entry->index = page->index;
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__entry->uptodate = PageUptodate(page);
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__entry->raw = raw;
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),
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TP_printk("dev = (%d,%d), nid = %llu, %s, index = %lu, uptodate = %d "
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"raw = %d",
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show_dev_nid(__entry),
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show_file_type(__entry->dir),
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(unsigned long)__entry->index,
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__entry->uptodate,
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__entry->raw)
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);
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TRACE_EVENT(erofs_readpages,
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TP_PROTO(struct inode *inode, pgoff_t start, unsigned int nrpage,
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bool raw),
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TP_ARGS(inode, start, nrpage, raw),
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TP_STRUCT__entry(
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__field(dev_t, dev )
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__field(erofs_nid_t, nid )
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__field(pgoff_t, start )
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__field(unsigned int, nrpage )
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__field(bool, raw )
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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->nid = EROFS_I(inode)->nid;
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__entry->start = start;
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__entry->nrpage = nrpage;
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__entry->raw = raw;
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),
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TP_printk("dev = (%d,%d), nid = %llu, start = %lu nrpage = %u raw = %d",
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show_dev_nid(__entry),
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(unsigned long)__entry->start,
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__entry->nrpage,
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__entry->raw)
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);
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DECLARE_EVENT_CLASS(erofs__map_blocks_enter,
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TP_PROTO(struct inode *inode, struct erofs_map_blocks *map,
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unsigned int flags),
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TP_ARGS(inode, map, flags),
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TP_STRUCT__entry(
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__field( dev_t, dev )
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__field( erofs_nid_t, nid )
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__field( erofs_off_t, la )
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__field( u64, llen )
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__field( unsigned int, flags )
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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->nid = EROFS_I(inode)->nid;
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__entry->la = map->m_la;
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__entry->llen = map->m_llen;
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__entry->flags = flags;
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),
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TP_printk("dev = (%d,%d), nid = %llu, la %llu llen %llu flags %s",
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show_dev_nid(__entry),
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__entry->la, __entry->llen,
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__entry->flags ? show_map_flags(__entry->flags) : "NULL")
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);
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DEFINE_EVENT(erofs__map_blocks_enter, erofs_map_blocks_flatmode_enter,
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TP_PROTO(struct inode *inode, struct erofs_map_blocks *map,
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unsigned flags),
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TP_ARGS(inode, map, flags)
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);
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DEFINE_EVENT(erofs__map_blocks_enter, z_erofs_map_blocks_iter_enter,
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TP_PROTO(struct inode *inode, struct erofs_map_blocks *map,
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unsigned int flags),
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TP_ARGS(inode, map, flags)
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);
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DECLARE_EVENT_CLASS(erofs__map_blocks_exit,
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TP_PROTO(struct inode *inode, struct erofs_map_blocks *map,
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unsigned int flags, int ret),
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TP_ARGS(inode, map, flags, ret),
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TP_STRUCT__entry(
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__field( dev_t, dev )
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__field( erofs_nid_t, nid )
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__field( unsigned int, flags )
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__field( erofs_off_t, la )
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__field( erofs_off_t, pa )
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__field( u64, llen )
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__field( u64, plen )
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__field( unsigned int, mflags )
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__field( int, 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->nid = EROFS_I(inode)->nid;
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__entry->flags = flags;
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__entry->la = map->m_la;
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__entry->pa = map->m_pa;
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__entry->llen = map->m_llen;
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__entry->plen = map->m_plen;
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__entry->mflags = map->m_flags;
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__entry->ret = ret;
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),
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TP_printk("dev = (%d,%d), nid = %llu, flags %s "
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"la %llu pa %llu llen %llu plen %llu mflags %s ret %d",
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show_dev_nid(__entry),
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__entry->flags ? show_map_flags(__entry->flags) : "NULL",
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__entry->la, __entry->pa, __entry->llen, __entry->plen,
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show_mflags(__entry->mflags), __entry->ret)
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);
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DEFINE_EVENT(erofs__map_blocks_exit, erofs_map_blocks_flatmode_exit,
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TP_PROTO(struct inode *inode, struct erofs_map_blocks *map,
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unsigned flags, int ret),
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TP_ARGS(inode, map, flags, ret)
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);
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DEFINE_EVENT(erofs__map_blocks_exit, z_erofs_map_blocks_iter_exit,
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TP_PROTO(struct inode *inode, struct erofs_map_blocks *map,
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unsigned int flags, int ret),
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TP_ARGS(inode, map, flags, ret)
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);
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TRACE_EVENT(erofs_destroy_inode,
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TP_PROTO(struct inode *inode),
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TP_ARGS(inode),
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TP_STRUCT__entry(
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__field( dev_t, dev )
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__field( erofs_nid_t, nid )
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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->nid = EROFS_I(inode)->nid;
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),
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TP_printk("dev = (%d,%d), nid = %llu", show_dev_nid(__entry))
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);
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#endif /* _TRACE_EROFS_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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