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f2fs: add tracepoint for f2fs iostat

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Added a tracepoint to see iostat of f2fs. Default period of that
is 3 second. This tracepoint can be used to be monitoring
I/O statistics periodically.

Signed-off-by: Daeho Jeong <daehojeong@google.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Daeho Jeong
2020-03-30 03:30:59 +00:00
committed by Jaegeuk Kim
parent da9953b729
commit 2bc4bea338
5 changed files with 113 additions and 1 deletions
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52
include/trace/events/f2fs.h
View File

@@ -1812,6 +1812,58 @@ DEFINE_EVENT(f2fs_zip_end, f2fs_decompress_pages_end,
TP_ARGS(inode, cluster_idx, compressed_size, ret)
);
TRACE_EVENT(f2fs_iostat,
TP_PROTO(struct f2fs_sb_info *sbi, unsigned long long *iostat),
TP_ARGS(sbi, iostat),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(unsigned long long, app_dio)
__field(unsigned long long, app_bio)
__field(unsigned long long, app_wio)
__field(unsigned long long, app_mio)
__field(unsigned long long, fs_dio)
__field(unsigned long long, fs_nio)
__field(unsigned long long, fs_mio)
__field(unsigned long long, fs_gc_dio)
__field(unsigned long long, fs_gc_nio)
__field(unsigned long long, fs_cp_dio)
__field(unsigned long long, fs_cp_nio)
__field(unsigned long long, fs_cp_mio)
__field(unsigned long long, fs_discard)
),
TP_fast_assign(
__entry->dev = sbi->sb->s_dev;
__entry->app_dio = iostat[APP_DIRECT_IO];
__entry->app_bio = iostat[APP_BUFFERED_IO];
__entry->app_wio = iostat[APP_WRITE_IO];
__entry->app_mio = iostat[APP_MAPPED_IO];
__entry->fs_dio = iostat[FS_DATA_IO];
__entry->fs_nio = iostat[FS_NODE_IO];
__entry->fs_mio = iostat[FS_META_IO];
__entry->fs_gc_dio = iostat[FS_GC_DATA_IO];
__entry->fs_gc_nio = iostat[FS_GC_NODE_IO];
__entry->fs_cp_dio = iostat[FS_CP_DATA_IO];
__entry->fs_cp_nio = iostat[FS_CP_NODE_IO];
__entry->fs_cp_mio = iostat[FS_CP_META_IO];
__entry->fs_discard = iostat[FS_DISCARD];
),
TP_printk("dev = (%d,%d), "
"app [write=%llu (direct=%llu, buffered=%llu), mapped=%llu], "
"fs [data=%llu, node=%llu, meta=%llu, discard=%llu], "
"gc [data=%llu, node=%llu], "
"cp [data=%llu, node=%llu, meta=%llu]",
show_dev(__entry->dev), __entry->app_wio, __entry->app_dio,
__entry->app_bio, __entry->app_mio, __entry->fs_dio,
__entry->fs_nio, __entry->fs_mio, __entry->fs_discard,
__entry->fs_gc_dio, __entry->fs_gc_nio, __entry->fs_cp_dio,
__entry->fs_cp_nio, __entry->fs_cp_mio)
);
#endif /* _TRACE_F2FS_H */
/* This part must be outside protection */