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linux/include/trace/events/erofs.h
Gao Xiang 8f89926290 erofs: get compression algorithms directly on mapping 
Currently, z_erofs_map_blocks_iter() returns whether extents are
compressed or not, and the decompression frontend gets the specific
algorithms then.

It works but not quite well in many aspests, for example:
 - The decompression frontend has to deal with whether extents are
   compressed or not again and lookup the algorithms if compressed.
   It's duplicated and too detailed about the on-disk mapping.

 - A new secondary compression head will be introduced later so that
   each file can have 2 compression algorithms at most for different
   type of data. It could increase the complexity of the decompression
   frontend if still handled in this way;

 - A new readmore decompression strategy will be introduced to get
   better performance for much bigger pcluster and lzma, which needs
   the specific algorithm in advance as well.

Let's look up compression algorithms in z_erofs_map_blocks_iter()
directly instead.

Link: https://lore.kernel.org/r/20211008200839.24541-2-xiang@kernel.org
Reviewed-by: Chao Yu <chao@kernel.org>
Reviewed-by: Yue Hu <huyue2@yulong.com>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
2021-10-18 00:15:55 +08:00

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/* SPDX-License-Identifier: GPL-2.0-only */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM erofs
#if !defined(_TRACE_EROFS_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_EROFS_H
#include <linux/tracepoint.h>
#include <linux/fs.h>
struct erofs_map_blocks;
#define show_dev(dev) MAJOR(dev), MINOR(dev)
#define show_dev_nid(entry) show_dev(entry->dev), entry->nid
#define show_file_type(type) \
__print_symbolic(type, \
{ 0, "FILE" }, \
{ 1, "DIR" })
#define show_map_flags(flags) __print_flags(flags, "|", \
{ EROFS_GET_BLOCKS_RAW, "RAW" })
#define show_mflags(flags) __print_flags(flags, "", \
{ EROFS_MAP_MAPPED, "M" }, \
{ EROFS_MAP_META, "I" }, \
{ EROFS_MAP_ENCODED, "E" })
TRACE_EVENT(erofs_lookup,
TP_PROTO(struct inode *dir, struct dentry *dentry, unsigned int flags),
TP_ARGS(dir, dentry, flags),
TP_STRUCT__entry(
__field(dev_t, dev )
__field(erofs_nid_t, nid )
__string(name, dentry->d_name.name )
__field(unsigned int, flags )
),
TP_fast_assign(
__entry->dev = dir->i_sb->s_dev;
__entry->nid = EROFS_I(dir)->nid;
__assign_str(name, dentry->d_name.name);
__entry->flags = flags;
),
TP_printk("dev = (%d,%d), pnid = %llu, name:%s, flags:%x",
show_dev_nid(__entry),
__get_str(name),
__entry->flags)
);
TRACE_EVENT(erofs_fill_inode,
TP_PROTO(struct inode *inode, int isdir),
TP_ARGS(inode, isdir),
TP_STRUCT__entry(
__field(dev_t, dev )
__field(erofs_nid_t, nid )
__field(erofs_blk_t, blkaddr )
__field(unsigned int, ofs )
__field(int, isdir )
),
TP_fast_assign(
__entry->dev = inode->i_sb->s_dev;
__entry->nid = EROFS_I(inode)->nid;
__entry->blkaddr = erofs_blknr(iloc(EROFS_I_SB(inode), __entry->nid));
__entry->ofs = erofs_blkoff(iloc(EROFS_I_SB(inode), __entry->nid));
__entry->isdir = isdir;
),
TP_printk("dev = (%d,%d), nid = %llu, blkaddr %u ofs %u, isdir %d",
show_dev_nid(__entry),
__entry->blkaddr, __entry->ofs,
__entry->isdir)
);
TRACE_EVENT(erofs_readpage,
TP_PROTO(struct page *page, bool raw),
TP_ARGS(page, raw),
TP_STRUCT__entry(
__field(dev_t, dev )
__field(erofs_nid_t, nid )
__field(int, dir )
__field(pgoff_t, index )
__field(int, uptodate)
__field(bool, raw )
),
TP_fast_assign(
__entry->dev = page->mapping->host->i_sb->s_dev;
__entry->nid = EROFS_I(page->mapping->host)->nid;
__entry->dir = S_ISDIR(page->mapping->host->i_mode);
__entry->index = page->index;
__entry->uptodate = PageUptodate(page);
__entry->raw = raw;
),
TP_printk("dev = (%d,%d), nid = %llu, %s, index = %lu, uptodate = %d "
"raw = %d",
show_dev_nid(__entry),
show_file_type(__entry->dir),
(unsigned long)__entry->index,
__entry->uptodate,
__entry->raw)
);
TRACE_EVENT(erofs_readpages,
TP_PROTO(struct inode *inode, pgoff_t start, unsigned int nrpage,
bool raw),
TP_ARGS(inode, start, nrpage, raw),
TP_STRUCT__entry(
__field(dev_t, dev )
__field(erofs_nid_t, nid )
__field(pgoff_t, start )
__field(unsigned int, nrpage )
__field(bool, raw )
),
TP_fast_assign(
__entry->dev = inode->i_sb->s_dev;
__entry->nid = EROFS_I(inode)->nid;
__entry->start = start;
__entry->nrpage = nrpage;
__entry->raw = raw;
),
TP_printk("dev = (%d,%d), nid = %llu, start = %lu nrpage = %u raw = %d",
show_dev_nid(__entry),
(unsigned long)__entry->start,
__entry->nrpage,
__entry->raw)
);
DECLARE_EVENT_CLASS(erofs__map_blocks_enter,
TP_PROTO(struct inode *inode, struct erofs_map_blocks *map,
unsigned int flags),
TP_ARGS(inode, map, flags),
TP_STRUCT__entry(
__field( dev_t, dev )
__field( erofs_nid_t, nid )
__field( erofs_off_t, la )
__field( u64, llen )
__field( unsigned int, flags )
),
TP_fast_assign(
__entry->dev = inode->i_sb->s_dev;
__entry->nid = EROFS_I(inode)->nid;
__entry->la = map->m_la;
__entry->llen = map->m_llen;
__entry->flags = flags;
),
TP_printk("dev = (%d,%d), nid = %llu, la %llu llen %llu flags %s",
show_dev_nid(__entry),
__entry->la, __entry->llen,
__entry->flags ? show_map_flags(__entry->flags) : "NULL")
);
DEFINE_EVENT(erofs__map_blocks_enter, erofs_map_blocks_flatmode_enter,
TP_PROTO(struct inode *inode, struct erofs_map_blocks *map,
unsigned flags),
TP_ARGS(inode, map, flags)
);
DEFINE_EVENT(erofs__map_blocks_enter, z_erofs_map_blocks_iter_enter,
TP_PROTO(struct inode *inode, struct erofs_map_blocks *map,
unsigned int flags),
TP_ARGS(inode, map, flags)
);
DECLARE_EVENT_CLASS(erofs__map_blocks_exit,
TP_PROTO(struct inode *inode, struct erofs_map_blocks *map,
unsigned int flags, int ret),
TP_ARGS(inode, map, flags, ret),
TP_STRUCT__entry(
__field( dev_t, dev )
__field( erofs_nid_t, nid )
__field( unsigned int, flags )
__field( erofs_off_t, la )
__field( erofs_off_t, pa )
__field( u64, llen )
__field( u64, plen )
__field( unsigned int, mflags )
__field( int, ret )
),
TP_fast_assign(
__entry->dev = inode->i_sb->s_dev;
__entry->nid = EROFS_I(inode)->nid;
__entry->flags = flags;
__entry->la = map->m_la;
__entry->pa = map->m_pa;
__entry->llen = map->m_llen;
__entry->plen = map->m_plen;
__entry->mflags = map->m_flags;
__entry->ret = ret;
),
TP_printk("dev = (%d,%d), nid = %llu, flags %s "
"la %llu pa %llu llen %llu plen %llu mflags %s ret %d",
show_dev_nid(__entry),
__entry->flags ? show_map_flags(__entry->flags) : "NULL",
__entry->la, __entry->pa, __entry->llen, __entry->plen,
show_mflags(__entry->mflags), __entry->ret)
);
DEFINE_EVENT(erofs__map_blocks_exit, erofs_map_blocks_flatmode_exit,
TP_PROTO(struct inode *inode, struct erofs_map_blocks *map,
unsigned flags, int ret),
TP_ARGS(inode, map, flags, ret)
);
DEFINE_EVENT(erofs__map_blocks_exit, z_erofs_map_blocks_iter_exit,
TP_PROTO(struct inode *inode, struct erofs_map_blocks *map,
unsigned int flags, int ret),
TP_ARGS(inode, map, flags, ret)
);
TRACE_EVENT(erofs_destroy_inode,
TP_PROTO(struct inode *inode),
TP_ARGS(inode),
TP_STRUCT__entry(
__field( dev_t, dev )
__field( erofs_nid_t, nid )
),
TP_fast_assign(
__entry->dev = inode->i_sb->s_dev;
__entry->nid = EROFS_I(inode)->nid;
),
TP_printk("dev = (%d,%d), nid = %llu", show_dev_nid(__entry))
);
#endif /* _TRACE_EROFS_H */
/* This part must be outside protection */
#include <trace/define_trace.h>
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