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Message-ID: <20200423100306.8817-1-yuchao0@huawei.com>
Date: Thu, 23 Apr 2020 18:03:06 +0800
From: Chao Yu <yuchao0@...wei.com>
To: <jaegeuk@...nel.org>
CC: <linux-f2fs-devel@...ts.sourceforge.net>,
<linux-kernel@...r.kernel.org>, <chao@...nel.org>,
Chao Yu <yuchao0@...wei.com>
Subject: [PATCH] f2fs: add compressed/gc data read IO stat
in order to account data read IOs more accurately.
Signed-off-by: Chao Yu <yuchao0@...wei.com>
---
Jaegeuk, merge this patch into ("f2fs: support read iostat") will
be okay to me as well.
fs/f2fs/data.c | 1 +
fs/f2fs/f2fs.h | 2 ++
fs/f2fs/gc.c | 2 ++
fs/f2fs/sysfs.c | 7 +++++++
include/trace/events/f2fs.h | 11 ++++++++---
5 files changed, 20 insertions(+), 3 deletions(-)
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 199877cb57fe..8dd48c5b6c0d 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -2176,6 +2176,7 @@ int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret,
inc_page_count(sbi, F2FS_RD_DATA);
f2fs_update_iostat(sbi, FS_DATA_READ_IO, F2FS_BLKSIZE);
+ f2fs_update_iostat(sbi, FS_CDATA_READ_IO, F2FS_BLKSIZE);
ClearPageError(page);
*last_block_in_bio = blkaddr;
}
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 3b9603266a2a..c154651335cd 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1108,6 +1108,8 @@ enum iostat_type {
APP_READ_IO, /* app read IOs */
APP_MAPPED_READ_IO, /* app mapped read IOs */
FS_DATA_READ_IO, /* data read IOs */
+ FS_GDATA_READ_IO, /* data read IOs from background gc */
+ FS_CDATA_READ_IO, /* compressed data read IOs */
FS_NODE_READ_IO, /* node read IOs */
FS_META_READ_IO, /* meta read IOs */
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 28a8c79c8bdc..a4c02bf61f8a 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -739,6 +739,7 @@ static int ra_data_block(struct inode *inode, pgoff_t index)
f2fs_put_page(page, 1);
f2fs_update_iostat(sbi, FS_DATA_READ_IO, F2FS_BLKSIZE);
+ f2fs_update_iostat(sbi, FS_GDATA_READ_IO, F2FS_BLKSIZE);
return 0;
put_encrypted_page:
@@ -845,6 +846,7 @@ static int move_data_block(struct inode *inode, block_t bidx,
}
f2fs_update_iostat(fio.sbi, FS_DATA_READ_IO, F2FS_BLKSIZE);
+ f2fs_update_iostat(fio.sbi, FS_GDATA_READ_IO, F2FS_BLKSIZE);
lock_page(mpage);
if (unlikely(mpage->mapping != META_MAPPING(fio.sbi) ||
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index eaf8088548f0..a117ae1f9d5f 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -803,6 +803,7 @@ static int __maybe_unused iostat_info_seq_show(struct seq_file *seq,
seq_printf(seq, "time: %-16llu\n", now);
/* print app write IOs */
+ seq_puts(seq, "[WRITE]\n");
seq_printf(seq, "app buffered: %-16llu\n",
sbi->rw_iostat[APP_BUFFERED_IO]);
seq_printf(seq, "app direct: %-16llu\n",
@@ -829,6 +830,7 @@ static int __maybe_unused iostat_info_seq_show(struct seq_file *seq,
sbi->rw_iostat[FS_CP_META_IO]);
/* print app read IOs */
+ seq_puts(seq, "[READ]\n");
seq_printf(seq, "app buffered: %-16llu\n",
sbi->rw_iostat[APP_BUFFERED_READ_IO]);
seq_printf(seq, "app direct: %-16llu\n",
@@ -839,12 +841,17 @@ static int __maybe_unused iostat_info_seq_show(struct seq_file *seq,
/* print fs read IOs */
seq_printf(seq, "fs data: %-16llu\n",
sbi->rw_iostat[FS_DATA_READ_IO]);
+ seq_printf(seq, "fs gc data: %-16llu\n",
+ sbi->rw_iostat[FS_GDATA_READ_IO]);
+ seq_printf(seq, "fs compr_data: %-16llu\n",
+ sbi->rw_iostat[FS_CDATA_READ_IO]);
seq_printf(seq, "fs node: %-16llu\n",
sbi->rw_iostat[FS_NODE_READ_IO]);
seq_printf(seq, "fs meta: %-16llu\n",
sbi->rw_iostat[FS_META_READ_IO]);
/* print other IOs */
+ seq_puts(seq, "[OTHER]\n");
seq_printf(seq, "fs discard: %-16llu\n",
sbi->rw_iostat[FS_DISCARD]);
diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index 417a486f5c8a..9ef8dea5c833 100644
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h
@@ -1837,6 +1837,8 @@ TRACE_EVENT(f2fs_iostat,
__field(unsigned long long, app_rio)
__field(unsigned long long, app_mrio)
__field(unsigned long long, fs_drio)
+ __field(unsigned long long, fs_gdrio)
+ __field(unsigned long long, fs_cdrio)
__field(unsigned long long, fs_nrio)
__field(unsigned long long, fs_mrio)
__field(unsigned long long, fs_discard)
@@ -1861,6 +1863,8 @@ TRACE_EVENT(f2fs_iostat,
__entry->app_rio = iostat[APP_READ_IO];
__entry->app_mrio = iostat[APP_MAPPED_READ_IO];
__entry->fs_drio = iostat[FS_DATA_READ_IO];
+ __entry->fs_gdrio = iostat[FS_GDATA_READ_IO];
+ __entry->fs_cdrio = iostat[FS_CDATA_READ_IO];
__entry->fs_nrio = iostat[FS_NODE_READ_IO];
__entry->fs_mrio = iostat[FS_META_READ_IO];
__entry->fs_discard = iostat[FS_DISCARD];
@@ -1872,15 +1876,16 @@ TRACE_EVENT(f2fs_iostat,
"gc [data=%llu, node=%llu], "
"cp [data=%llu, node=%llu, meta=%llu], "
"app [read=%llu (direct=%llu, buffered=%llu), mapped=%llu], "
- "fs [data=%llu, node=%llu, meta=%llu]",
+ "fs [data=%llu, (gc_data=%llu, compr_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,
__entry->app_rio, __entry->app_drio, __entry->app_brio,
- __entry->app_mrio, __entry->fs_drio, __entry->fs_nrio,
- __entry->fs_mrio)
+ __entry->app_mrio, __entry->fs_drio, __entry->fs_gdrio,
+ __entry->fs_cdrio, __entry->fs_nrio, __entry->fs_mrio)
);
#endif /* _TRACE_F2FS_H */
--
2.18.0.rc1
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