[PATCH v4 1/2] f2fs: separate out iostat feature

From: Daeho Jeong
Date: Thu Aug 19 2021 - 23:52:49 EST

From: Daeho Jeong <daehojeong@xxxxxxxxxx>

Added F2FS_IOSTAT config option to support getting IO statistics through
sysfs and printing out periodic IO statistics tracepoint events and
moved I/O statistics related codes into separate files for better
maintenance.

Signed-off-by: Daeho Jeong <daehojeong@xxxxxxxxxx>
---
fs/f2fs/Kconfig | 9 +++
fs/f2fs/Makefile | 1 +
fs/f2fs/checkpoint.c | 1 +
fs/f2fs/data.c | 1 +
fs/f2fs/f2fs.h | 59 +++-----------
fs/f2fs/file.c | 1 +
fs/f2fs/gc.c | 1 +
fs/f2fs/iostat.c | 154 ++++++++++++++++++++++++++++++++++++
fs/f2fs/iostat.h | 27 +++++++
fs/f2fs/node.c | 1 +
fs/f2fs/segment.c | 1 +
fs/f2fs/super.c | 10 +--
fs/f2fs/sysfs.c | 106 +++----------------------
include/trace/events/f2fs.h | 2 +
14 files changed, 225 insertions(+), 149 deletions(-)
create mode 100644 fs/f2fs/iostat.c
create mode 100644 fs/f2fs/iostat.h

diff --git a/fs/f2fs/Kconfig b/fs/f2fs/Kconfig
index 2ac026fc3564..f1f292d3b8ce 100644
--- a/fs/f2fs/Kconfig
+++ b/fs/f2fs/Kconfig
@@ -133,3 +133,12 @@ config F2FS_FS_ZSTD
default y
help
Support ZSTD compress algorithm, if unsure, say Y.
+
+config F2FS_IOSTAT
+ bool "F2FS IO statistics information"
+ depends on F2FS_FS
+ default n
+ help
+ Support getting IO statistics through sysfs and printing out periodic
+ IO statistics tracepoint events. You have to turn on "iostat_enable"
+ sysfs node to enable this feature.
diff --git a/fs/f2fs/Makefile b/fs/f2fs/Makefile
index e5295746208b..8a7322d229e4 100644
--- a/fs/f2fs/Makefile
+++ b/fs/f2fs/Makefile
@@ -9,3 +9,4 @@ f2fs-$(CONFIG_F2FS_FS_XATTR) += xattr.o
f2fs-$(CONFIG_F2FS_FS_POSIX_ACL) += acl.o
f2fs-$(CONFIG_FS_VERITY) += verity.o
f2fs-$(CONFIG_F2FS_FS_COMPRESSION) += compress.o
+f2fs-$(CONFIG_F2FS_IOSTAT) += iostat.o
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 41960c55c343..3962cfeb4a57 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -18,6 +18,7 @@
#include "f2fs.h"
#include "node.h"
#include "segment.h"
+#include "iostat.h"
#include <trace/events/f2fs.h>

#define DEFAULT_CHECKPOINT_IOPRIO (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 3))
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index e4e4eb800d2b..fd16c4fc4507 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -25,6 +25,7 @@
#include "f2fs.h"
#include "node.h"
#include "segment.h"
+#include "iostat.h"
#include <trace/events/f2fs.h>

#define NUM_PREALLOC_POST_READ_CTXS 128
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index fe5f280f6ac0..12ecf6ee9cb5 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1713,14 +1713,6 @@ struct f2fs_sb_info {
#endif
spinlock_t stat_lock; /* lock for stat operations */

- /* For app/fs IO statistics */
- spinlock_t iostat_lock;
- unsigned long long rw_iostat[NR_IO_TYPE];
- unsigned long long prev_rw_iostat[NR_IO_TYPE];
- bool iostat_enable;
- unsigned long iostat_next_period;
- unsigned int iostat_period_ms;
-
/* to attach REQ_META|REQ_FUA flags */
unsigned int data_io_flag;
unsigned int node_io_flag;
@@ -1780,6 +1772,16 @@ struct f2fs_sb_info {
unsigned int compress_watermark; /* cache page watermark */
atomic_t compress_page_hit; /* cache hit count */
#endif
+
+#ifdef CONFIG_F2FS_IOSTAT
+ /* For app/fs IO statistics */
+ spinlock_t iostat_lock;
+ unsigned long long rw_iostat[NR_IO_TYPE];
+ unsigned long long prev_rw_iostat[NR_IO_TYPE];
+ bool iostat_enable;
+ unsigned long iostat_next_period;
+ unsigned int iostat_period_ms;
+#endif
};

struct f2fs_private_dio {
@@ -3257,47 +3259,6 @@ static inline int get_inline_xattr_addrs(struct inode *inode)
sizeof((f2fs_inode)->field)) \
<= (F2FS_OLD_ATTRIBUTE_SIZE + (extra_isize))) \

-#define DEFAULT_IOSTAT_PERIOD_MS 3000
-#define MIN_IOSTAT_PERIOD_MS 100
-/* maximum period of iostat tracing is 1 day */
-#define MAX_IOSTAT_PERIOD_MS 8640000
-
-static inline void f2fs_reset_iostat(struct f2fs_sb_info *sbi)
-{
- int i;
-
- spin_lock(&sbi->iostat_lock);
- for (i = 0; i < NR_IO_TYPE; i++) {
- sbi->rw_iostat[i] = 0;
- sbi->prev_rw_iostat[i] = 0;
- }
- spin_unlock(&sbi->iostat_lock);
-}
-
-extern void f2fs_record_iostat(struct f2fs_sb_info *sbi);
-
-static inline void f2fs_update_iostat(struct f2fs_sb_info *sbi,
- enum iostat_type type, unsigned long long io_bytes)
-{
- if (!sbi->iostat_enable)
- return;
- spin_lock(&sbi->iostat_lock);
- sbi->rw_iostat[type] += io_bytes;
-
- if (type == APP_WRITE_IO || type == APP_DIRECT_IO)
- sbi->rw_iostat[APP_BUFFERED_IO] =
- sbi->rw_iostat[APP_WRITE_IO] -
- sbi->rw_iostat[APP_DIRECT_IO];
-
- if (type == APP_READ_IO || type == APP_DIRECT_READ_IO)
- sbi->rw_iostat[APP_BUFFERED_READ_IO] =
- sbi->rw_iostat[APP_READ_IO] -
- sbi->rw_iostat[APP_DIRECT_READ_IO];
- spin_unlock(&sbi->iostat_lock);
-
- f2fs_record_iostat(sbi);
-}
-
#define __is_large_section(sbi) ((sbi)->segs_per_sec > 1)

#define __is_meta_io(fio) (PAGE_TYPE_OF_BIO((fio)->type) == META)
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index d4fc5e0d2ffe..ab4ea2ddcc8b 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -31,6 +31,7 @@
#include "xattr.h"
#include "acl.h"
#include "gc.h"
+#include "iostat.h"
#include <trace/events/f2fs.h>
#include <uapi/linux/f2fs.h>

diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 3bc0f0162e31..2c18443972b6 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -19,6 +19,7 @@
#include "node.h"
#include "segment.h"
#include "gc.h"
+#include "iostat.h"
#include <trace/events/f2fs.h>

static struct kmem_cache *victim_entry_slab;
diff --git a/fs/f2fs/iostat.c b/fs/f2fs/iostat.c
new file mode 100644
index 000000000000..21c29e121a86
--- /dev/null
+++ b/fs/f2fs/iostat.c
@@ -0,0 +1,154 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * f2fs iostat support
+ *
+ * Copyright 2021 Google LLC
+ * Author: Daeho Jeong <daehojeong@xxxxxxxxxx>
+ */
+
+#include <linux/fs.h>
+#include <linux/f2fs_fs.h>
+#include <linux/seq_file.h>
+
+#include "f2fs.h"
+#include "iostat.h"
+#include <trace/events/f2fs.h>
+
+int __maybe_unused iostat_info_seq_show(struct seq_file *seq, void *offset)
+{
+ struct super_block *sb = seq->private;
+ struct f2fs_sb_info *sbi = F2FS_SB(sb);
+ time64_t now = ktime_get_real_seconds();
+
+ if (!sbi->iostat_enable)
+ return 0;
+
+ 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",
+ sbi->rw_iostat[APP_DIRECT_IO]);
+ seq_printf(seq, "app mapped: %-16llu\n",
+ sbi->rw_iostat[APP_MAPPED_IO]);
+
+ /* print fs write IOs */
+ seq_printf(seq, "fs data: %-16llu\n",
+ sbi->rw_iostat[FS_DATA_IO]);
+ seq_printf(seq, "fs node: %-16llu\n",
+ sbi->rw_iostat[FS_NODE_IO]);
+ seq_printf(seq, "fs meta: %-16llu\n",
+ sbi->rw_iostat[FS_META_IO]);
+ seq_printf(seq, "fs gc data: %-16llu\n",
+ sbi->rw_iostat[FS_GC_DATA_IO]);
+ seq_printf(seq, "fs gc node: %-16llu\n",
+ sbi->rw_iostat[FS_GC_NODE_IO]);
+ seq_printf(seq, "fs cp data: %-16llu\n",
+ sbi->rw_iostat[FS_CP_DATA_IO]);
+ seq_printf(seq, "fs cp node: %-16llu\n",
+ sbi->rw_iostat[FS_CP_NODE_IO]);
+ seq_printf(seq, "fs cp meta: %-16llu\n",
+ 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",
+ 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 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]);
+
+ return 0;
+}
+
+static inline void f2fs_record_iostat(struct f2fs_sb_info *sbi)
+{
+ unsigned long long iostat_diff[NR_IO_TYPE];
+ int i;
+
+ if (time_is_after_jiffies(sbi->iostat_next_period))
+ return;
+
+ /* Need double check under the lock */
+ spin_lock(&sbi->iostat_lock);
+ if (time_is_after_jiffies(sbi->iostat_next_period)) {
+ spin_unlock(&sbi->iostat_lock);
+ return;
+ }
+ sbi->iostat_next_period = jiffies +
+ msecs_to_jiffies(sbi->iostat_period_ms);
+
+ for (i = 0; i < NR_IO_TYPE; 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);
+
+ trace_f2fs_iostat(sbi, iostat_diff);
+}
+
+void f2fs_reset_iostat(struct f2fs_sb_info *sbi)
+{
+ int i;
+
+ spin_lock(&sbi->iostat_lock);
+ for (i = 0; i < NR_IO_TYPE; i++) {
+ sbi->rw_iostat[i] = 0;
+ sbi->prev_rw_iostat[i] = 0;
+ }
+ spin_unlock(&sbi->iostat_lock);
+}
+
+void f2fs_update_iostat(struct f2fs_sb_info *sbi,
+ enum iostat_type type, unsigned long long io_bytes)
+{
+ if (!sbi->iostat_enable)
+ return;
+
+ spin_lock(&sbi->iostat_lock);
+ sbi->rw_iostat[type] += io_bytes;
+
+ if (type == APP_WRITE_IO || type == APP_DIRECT_IO)
+ sbi->rw_iostat[APP_BUFFERED_IO] =
+ sbi->rw_iostat[APP_WRITE_IO] -
+ sbi->rw_iostat[APP_DIRECT_IO];
+
+ if (type == APP_READ_IO || type == APP_DIRECT_READ_IO)
+ sbi->rw_iostat[APP_BUFFERED_READ_IO] =
+ sbi->rw_iostat[APP_READ_IO] -
+ sbi->rw_iostat[APP_DIRECT_READ_IO];
+ spin_unlock(&sbi->iostat_lock);
+
+ f2fs_record_iostat(sbi);
+}
+
+int f2fs_init_iostat(struct f2fs_sb_info *sbi)
+{
+ /* init iostat info */
+ spin_lock_init(&sbi->iostat_lock);
+ sbi->iostat_enable = false;
+ sbi->iostat_period_ms = DEFAULT_IOSTAT_PERIOD_MS;
+
+ return 0;
+}
diff --git a/fs/f2fs/iostat.h b/fs/f2fs/iostat.h
new file mode 100644
index 000000000000..46e4a36fc8e9
--- /dev/null
+++ b/fs/f2fs/iostat.h
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright 2021 Google LLC
+ * Author: Daeho Jeong <daehojeong@xxxxxxxxxx>
+ */
+#ifndef __F2FS_IOSTAT_H__
+#define __F2FS_IOSTAT_H__
+
+#ifdef CONFIG_F2FS_IOSTAT
+
+#define DEFAULT_IOSTAT_PERIOD_MS 3000
+#define MIN_IOSTAT_PERIOD_MS 100
+/* maximum period of iostat tracing is 1 day */
+#define MAX_IOSTAT_PERIOD_MS 8640000
+
+extern int __maybe_unused iostat_info_seq_show(struct seq_file *seq,
+ void *offset);
+extern void f2fs_reset_iostat(struct f2fs_sb_info *sbi);
+extern void f2fs_update_iostat(struct f2fs_sb_info *sbi,
+ enum iostat_type type, unsigned long long io_bytes);
+extern int f2fs_init_iostat(struct f2fs_sb_info *sbi);
+#else
+static inline void f2fs_update_iostat(struct f2fs_sb_info *sbi,
+ enum iostat_type type, unsigned long long io_bytes) {}
+static inline int f2fs_init_iostat(struct f2fs_sb_info *sbi) { return 0; }
+#endif
+#endif /* __F2FS_IOSTAT_H__ */
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 161173de5a2d..043cb831b289 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -17,6 +17,7 @@
#include "node.h"
#include "segment.h"
#include "xattr.h"
+#include "iostat.h"
#include <trace/events/f2fs.h>

#define on_f2fs_build_free_nids(nmi) mutex_is_locked(&(nm_i)->build_lock)
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index b4dd22134a73..73abec9988e9 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -20,6 +20,7 @@
#include "segment.h"
#include "node.h"
#include "gc.h"
+#include "iostat.h"
#include <trace/events/f2fs.h>

#define __reverse_ffz(x) __reverse_ffs(~(x))
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index b556ca38f0fb..a23926d1a77b 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -33,6 +33,7 @@
#include "segment.h"
#include "xattr.h"
#include "gc.h"
+#include "iostat.h"

#define CREATE_TRACE_POINTS
#include <trace/events/f2fs.h>
@@ -3964,11 +3965,6 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
set_sbi_flag(sbi, SBI_POR_DOING);
spin_lock_init(&sbi->stat_lock);

- /* init iostat info */
- spin_lock_init(&sbi->iostat_lock);
- sbi->iostat_enable = false;
- sbi->iostat_period_ms = DEFAULT_IOSTAT_PERIOD_MS;
-
for (i = 0; i < NR_PAGE_TYPE; i++) {
int n = (i == META) ? 1 : NR_TEMP_TYPE;
int j;
@@ -3999,6 +3995,10 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
init_waitqueue_head(&sbi->cp_wait);
init_sb_info(sbi);

+ err = f2fs_init_iostat(sbi);
+ if (err)
+ goto free_bio_info;
+
err = init_percpu_info(sbi);
if (err)
goto free_bio_info;
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index 36d7e40bf12e..a1a3e0f6d658 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -17,6 +17,7 @@
#include "f2fs.h"
#include "segment.h"
#include "gc.h"
+#include "iostat.h"
#include <trace/events/f2fs.h>

static struct proc_dir_entry *f2fs_proc_root;
@@ -477,6 +478,7 @@ static ssize_t __sbi_store(struct f2fs_attr *a,
return count;
}

+#ifdef CONFIG_F2FS_IOSTAT
if (!strcmp(a->attr.name, "iostat_enable")) {
sbi->iostat_enable = !!t;
if (!sbi->iostat_enable)
@@ -492,6 +494,7 @@ static ssize_t __sbi_store(struct f2fs_attr *a,
spin_unlock(&sbi->iostat_lock);
return count;
}
+#endif

#ifdef CONFIG_F2FS_FS_COMPRESSION
if (!strcmp(a->attr.name, "compr_written_block") ||
@@ -700,8 +703,10 @@ F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, discard_idle_interval,
F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle_interval, interval_time[GC_TIME]);
F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info,
umount_discard_timeout, interval_time[UMOUNT_DISCARD_TIMEOUT]);
+#ifdef CONFIG_F2FS_IOSTAT
F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, iostat_enable, iostat_enable);
F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, iostat_period_ms, iostat_period_ms);
+#endif
F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, readdir_ra, readdir_ra);
F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_io_bytes, max_io_bytes);
F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_pin_file_thresh, gc_pin_file_threshold);
@@ -807,8 +812,10 @@ static struct attribute *f2fs_attrs[] = {
ATTR_LIST(discard_idle_interval),
ATTR_LIST(gc_idle_interval),
ATTR_LIST(umount_discard_timeout),
+#ifdef CONFIG_F2FS_IOSTAT
ATTR_LIST(iostat_enable),
ATTR_LIST(iostat_period_ms),
+#endif
ATTR_LIST(readdir_ra),
ATTR_LIST(max_io_bytes),
ATTR_LIST(gc_pin_file_thresh),
@@ -1076,101 +1083,6 @@ static int __maybe_unused segment_bits_seq_show(struct seq_file *seq,
return 0;
}

-void f2fs_record_iostat(struct f2fs_sb_info *sbi)
-{
- unsigned long long iostat_diff[NR_IO_TYPE];
- int i;
-
- if (time_is_after_jiffies(sbi->iostat_next_period))
- return;
-
- /* Need double check under the lock */
- spin_lock(&sbi->iostat_lock);
- if (time_is_after_jiffies(sbi->iostat_next_period)) {
- spin_unlock(&sbi->iostat_lock);
- return;
- }
- sbi->iostat_next_period = jiffies +
- msecs_to_jiffies(sbi->iostat_period_ms);
-
- for (i = 0; i < NR_IO_TYPE; 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);
-
- trace_f2fs_iostat(sbi, iostat_diff);
-}
-
-static int __maybe_unused iostat_info_seq_show(struct seq_file *seq,
- void *offset)
-{
- struct super_block *sb = seq->private;
- struct f2fs_sb_info *sbi = F2FS_SB(sb);
- time64_t now = ktime_get_real_seconds();
-
- if (!sbi->iostat_enable)
- return 0;
-
- 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",
- sbi->rw_iostat[APP_DIRECT_IO]);
- seq_printf(seq, "app mapped: %-16llu\n",
- sbi->rw_iostat[APP_MAPPED_IO]);
-
- /* print fs write IOs */
- seq_printf(seq, "fs data: %-16llu\n",
- sbi->rw_iostat[FS_DATA_IO]);
- seq_printf(seq, "fs node: %-16llu\n",
- sbi->rw_iostat[FS_NODE_IO]);
- seq_printf(seq, "fs meta: %-16llu\n",
- sbi->rw_iostat[FS_META_IO]);
- seq_printf(seq, "fs gc data: %-16llu\n",
- sbi->rw_iostat[FS_GC_DATA_IO]);
- seq_printf(seq, "fs gc node: %-16llu\n",
- sbi->rw_iostat[FS_GC_NODE_IO]);
- seq_printf(seq, "fs cp data: %-16llu\n",
- sbi->rw_iostat[FS_CP_DATA_IO]);
- seq_printf(seq, "fs cp node: %-16llu\n",
- sbi->rw_iostat[FS_CP_NODE_IO]);
- seq_printf(seq, "fs cp meta: %-16llu\n",
- 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",
- 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 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]);
-
- return 0;
-}
-
static int __maybe_unused victim_bits_seq_show(struct seq_file *seq,
void *offset)
{
@@ -1257,8 +1169,10 @@ int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
segment_info_seq_show, sb);
proc_create_single_data("segment_bits", 0444, sbi->s_proc,
segment_bits_seq_show, sb);
+#ifdef CONFIG_F2FS_IOSTAT
proc_create_single_data("iostat_info", 0444, sbi->s_proc,
iostat_info_seq_show, sb);
+#endif
proc_create_single_data("victim_bits", 0444, sbi->s_proc,
victim_bits_seq_show, sb);
}
@@ -1278,7 +1192,9 @@ int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi)
{
if (sbi->s_proc) {
+#ifdef CONFIG_F2FS_IOSTAT
remove_proc_entry("iostat_info", sbi->s_proc);
+#endif
remove_proc_entry("segment_info", sbi->s_proc);
remove_proc_entry("segment_bits", sbi->s_proc);
remove_proc_entry("victim_bits", sbi->s_proc);
diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index 56b113e3cd6a..3eaf19aa89af 100644
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h
@@ -1818,6 +1818,7 @@ DEFINE_EVENT(f2fs_zip_end, f2fs_decompress_pages_end,
TP_ARGS(inode, cluster_idx, compressed_size, ret)
);

+#ifdef CONFIG_F2FS_IOSTAT
TRACE_EVENT(f2fs_iostat,

TP_PROTO(struct f2fs_sb_info *sbi, unsigned long long *iostat),
@@ -1893,6 +1894,7 @@ TRACE_EVENT(f2fs_iostat,
__entry->app_mrio, __entry->fs_drio, __entry->fs_gdrio,
__entry->fs_cdrio, __entry->fs_nrio, __entry->fs_mrio)
);
+#endif

TRACE_EVENT(f2fs_bmap,

--
2.33.0.rc2.250.ged5fa647cd-goog