Add a ipu_mode sysfs node to show the current ipu policy as a string
for readability, like we do in commit a3951cd199a5 ("f2fs: introduce
gc_mode sysfs node").
Since we use ipu_policy as a bitmap, and the bitmap API parameter is
unsigned long type data, let's change ipu_policy to unsigned long type.
Signed-off-by: Yangtao Li <frank...@vivo.com>
---
v4:
-rebase, no code change
Documentation/ABI/testing/sysfs-fs-f2fs | 6 ++++++
fs/f2fs/f2fs.h | 4 ++--
fs/f2fs/segment.h | 1 +
fs/f2fs/sysfs.c | 28 ++++++++++++++++++++++++-
4 files changed, 36 insertions(+), 3 deletions(-)
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs
b/Documentation/ABI/testing/sysfs-fs-f2fs
index 94132745ecbe..b2d8c1e84073 100644
--- a/Documentation/ABI/testing/sysfs-fs-f2fs
+++ b/Documentation/ABI/testing/sysfs-fs-f2fs
@@ -729,3 +729,9 @@ What: /sys/fs/f2fs/<disk>/last_age_weight
Date: January 2023
Contact: "Ping Xiong" <xiongpi...@xiaomi.com>
Description: When DATA SEPARATION is on, it controls the weight of last data
block age.
+
+What: /sys/fs/f2fs/<disk>/ipu_mode
+Date: February 2023
+Contact: "Yangtao Li" <frank...@vivo.com>
+Description: Show the current ipu policy as a string.
+ This is a read-only entry.
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 44f2d76525bf..b699ed74f438 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1070,7 +1070,7 @@ struct f2fs_sm_info {
struct list_head sit_entry_set; /* sit entry set list */
- unsigned int ipu_policy; /* in-place-update policy */
+ unsigned long ipu_policy; /* in-place-update policy */
unsigned int min_ipu_util; /* in-place-update threshold */
unsigned int min_fsync_blocks; /* threshold for fsync */
unsigned int min_seq_blocks; /* threshold for sequential blocks */
@@ -1322,7 +1322,7 @@ enum {
MAX_TIME,
};
-/* Note that you need to keep synchronization with this gc_mode_names array */
+/* Modification on enum should be synchronized with gc_mode_names array */
enum {
GC_NORMAL,
GC_IDLE_CB,
diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h
index 8ee5e5db9287..92c8be00d396 100644
--- a/fs/f2fs/segment.h
+++ b/fs/f2fs/segment.h
@@ -672,6 +672,7 @@ static inline int utilization(struct f2fs_sb_info *sbi)
#define F2FS_IPU_DISABLE 0
+/* Modification on enum should be synchronized with ipu_mode_names array */
enum {
F2FS_IPU_FORCE,
F2FS_IPU_SSR,
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index 3c3dae3ce84e..4a2d895cd52c 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -51,6 +51,17 @@ static const char *gc_mode_names[MAX_GC_MODE] = {
"GC_URGENT_MID"
};
+static const char *ipu_mode_names[F2FS_IPU_MAX] = {
+ "FORCE",
+ "SSR",
+ "UTIL",
+ "SSR_UTIL",
+ "FSYNC",
+ "ASYNC",
+ "NOCACHE",
+ "HONOR_OPU_WRITE",
+};
+
struct f2fs_attr {
struct attribute attr;
ssize_t (*show)(struct f2fs_attr *a, struct f2fs_sb_info *sbi, char
*buf);
@@ -149,6 +160,19 @@ static ssize_t gc_mode_show(struct f2fs_attr *a,
return sysfs_emit(buf, "%s\n", gc_mode_names[sbi->gc_mode]);
}
+static ssize_t ipu_mode_show(struct f2fs_attr *a,
+ struct f2fs_sb_info *sbi, char *buf)
+{
+ int len = 0, i = 0;
+
+ if (SM_I(sbi)->ipu_policy == F2FS_IPU_DISABLE)
+ return sysfs_emit(buf, "DISABLE\n");
+
+ for_each_set_bit(i, &SM_I(sbi)->ipu_policy, F2FS_IPU_MAX)
+ len += scnprintf(buf + len, PAGE_SIZE - len, "%s\n",
ipu_mode_names[i]);
+ return len;
+}
+
static ssize_t features_show(struct f2fs_attr *a,
struct f2fs_sb_info *sbi, char *buf)
{
@@ -711,7 +735,7 @@ static ssize_t __sbi_store(struct f2fs_attr *a,
return -EINVAL;
if (t && f2fs_lfs_mode(sbi))
return -EINVAL;
- SM_I(sbi)->ipu_policy = (unsigned int)t;
+ SM_I(sbi)->ipu_policy = t;
return count;
}
@@ -907,6 +931,7 @@ F2FS_GENERAL_RO_ATTR(mounted_time_sec);
F2FS_GENERAL_RO_ATTR(main_blkaddr);
F2FS_GENERAL_RO_ATTR(pending_discard);
F2FS_GENERAL_RO_ATTR(gc_mode);
+F2FS_GENERAL_RO_ATTR(ipu_mode);
#ifdef CONFIG_F2FS_STAT_FS
F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, cp_foreground_calls, cp_count);
F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, cp_background_calls, bg_cp_count);
@@ -997,6 +1022,7 @@ static struct attribute *f2fs_attrs[] = {
ATTR_LIST(max_ordered_discard),
ATTR_LIST(pending_discard),
ATTR_LIST(gc_mode),
+ ATTR_LIST(ipu_mode),
ATTR_LIST(ipu_policy),
ATTR_LIST(min_ipu_util),
ATTR_LIST(min_fsync_blocks),
--
2.25.1
_______________________________________________
Linux-f2fs-devel mailing list
Linux-f2fs-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
