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f2fs: support read iostat

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Adds to support accounting read IOs from userspace/kernel.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu
2020-04-16 18:16:56 +08:00
committed by Jaegeuk Kim
parent df42339975
commit 8b83ac81f4
8 changed files with 118 additions and 31 deletions
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52
fs/f2fs/sysfs.c
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@@ -781,9 +781,9 @@ void f2fs_record_iostat(struct f2fs_sb_info *sbi)
msecs_to_jiffies(sbi->iostat_period_ms);
for (i = 0; i < NR_IO_TYPE; i++) {
iostat_diff[i] = sbi->write_iostat[i] -
sbi->prev_write_iostat[i];
sbi->prev_write_iostat[i] = sbi->write_iostat[i];
iostat_diff[i] = sbi->rw_iostat[i] -
sbi->prev_rw_iostat[i];
sbi->prev_rw_iostat[i] = sbi->rw_iostat[i];
}
spin_unlock(&sbi->iostat_lock);
@@ -802,33 +802,51 @@ static int __maybe_unused iostat_info_seq_show(struct seq_file *seq,
seq_printf(seq, "time: %-16llu\n", now);
/* print app IOs */
/* print app write IOs */
seq_printf(seq, "app buffered: %-16llu\n",
sbi->write_iostat[APP_BUFFERED_IO]);
sbi->rw_iostat[APP_BUFFERED_IO]);
seq_printf(seq, "app direct: %-16llu\n",
sbi->write_iostat[APP_DIRECT_IO]);
sbi->rw_iostat[APP_DIRECT_IO]);
seq_printf(seq, "app mapped: %-16llu\n",
sbi->write_iostat[APP_MAPPED_IO]);
sbi->rw_iostat[APP_MAPPED_IO]);
/* print fs IOs */
/* print fs write IOs */
seq_printf(seq, "fs data: %-16llu\n",
sbi->write_iostat[FS_DATA_IO]);
sbi->rw_iostat[FS_DATA_IO]);
seq_printf(seq, "fs node: %-16llu\n",
sbi->write_iostat[FS_NODE_IO]);
sbi->rw_iostat[FS_NODE_IO]);
seq_printf(seq, "fs meta: %-16llu\n",
sbi->write_iostat[FS_META_IO]);
sbi->rw_iostat[FS_META_IO]);
seq_printf(seq, "fs gc data: %-16llu\n",
sbi->write_iostat[FS_GC_DATA_IO]);
sbi->rw_iostat[FS_GC_DATA_IO]);
seq_printf(seq, "fs gc node: %-16llu\n",
sbi->write_iostat[FS_GC_NODE_IO]);
sbi->rw_iostat[FS_GC_NODE_IO]);
seq_printf(seq, "fs cp data: %-16llu\n",
sbi->write_iostat[FS_CP_DATA_IO]);
sbi->rw_iostat[FS_CP_DATA_IO]);
seq_printf(seq, "fs cp node: %-16llu\n",
sbi->write_iostat[FS_CP_NODE_IO]);
sbi->rw_iostat[FS_CP_NODE_IO]);
seq_printf(seq, "fs cp meta: %-16llu\n",
sbi->write_iostat[FS_CP_META_IO]);
sbi->rw_iostat[FS_CP_META_IO]);
/* print app read IOs */
seq_printf(seq, "app buffered: %-16llu\n",
sbi->rw_iostat[APP_BUFFERED_READ_IO]);
seq_printf(seq, "app direct: %-16llu\n",
sbi->rw_iostat[APP_DIRECT_READ_IO]);
seq_printf(seq, "app mapped: %-16llu\n",
sbi->rw_iostat[APP_MAPPED_READ_IO]);
/* print fs read IOs */
seq_printf(seq, "fs data: %-16llu\n",
sbi->rw_iostat[FS_DATA_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_printf(seq, "fs discard: %-16llu\n",
sbi->write_iostat[FS_DISCARD]);
sbi->rw_iostat[FS_DISCARD]);
return 0;
}