This patch adds a proc entry named inject_stats to show total injected
count for each fault type.
cat /proc/fs/f2fs/<dev>/inject_stats
fault_type injected_count
kmalloc 0
kvmalloc 0
page alloc 0
page get 0
alloc bio(obsolete) 0
alloc nid 0
orphan 0
no more block 0
too big dir depth 0
evict_inode fail 0
truncate fail 0
read IO error 0
checkpoint error 0
discard error 0
write IO error 0
slab alloc 0
dquot initialize 0
lock_op 0
invalid blkaddr 0
inconsistent blkaddr 0
no free segment 0
inconsistent footer 0
Signed-off-by: Chao Yu <c...@kernel.org>
---
v2:
- add missing CONFIG_F2FS_FAULT_INJECTION
fs/f2fs/f2fs.h | 3 +++
fs/f2fs/super.c | 1 +
fs/f2fs/sysfs.c | 22 ++++++++++++++++++++++
3 files changed, 26 insertions(+)
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index f1576dc6ec67..986ee5b9326d 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -73,6 +73,8 @@ struct f2fs_fault_info {
atomic_t inject_ops;
int inject_rate;
unsigned int inject_type;
+ /* Used to account total count of injection for each type */
+ unsigned int inject_count[FAULT_MAX];
};
extern const char *f2fs_fault_name[FAULT_MAX];
@@ -1902,6 +1904,7 @@ static inline bool __time_to_inject(struct f2fs_sb_info
*sbi, int type,
atomic_inc(&ffi->inject_ops);
if (atomic_read(&ffi->inject_ops) >= ffi->inject_rate) {
atomic_set(&ffi->inject_ops, 0);
+ ffi->inject_count[type]++;
f2fs_info_ratelimited(sbi, "inject %s in %s of %pS",
f2fs_fault_name[type], func, parent_func);
return true;
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index f087b2b71c89..dfe0604ab558 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -47,6 +47,7 @@ const char *f2fs_fault_name[FAULT_MAX] = {
[FAULT_KVMALLOC] = "kvmalloc",
[FAULT_PAGE_ALLOC] = "page alloc",
[FAULT_PAGE_GET] = "page get",
+ [FAULT_ALLOC_BIO] = "alloc bio(obsolete)",
[FAULT_ALLOC_NID] = "alloc nid",
[FAULT_ORPHAN] = "orphan",
[FAULT_BLOCK] = "no more block",
diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index c69161366467..46fa94db08a8 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -1679,6 +1679,24 @@ static int __maybe_unused disk_map_seq_show(struct
seq_file *seq,
return 0;
}
+#ifdef CONFIG_F2FS_FAULT_INJECTION
+static int __maybe_unused inject_stats_seq_show(struct seq_file *seq,
+ void *offset)
+{
+ struct super_block *sb = seq->private;
+ struct f2fs_sb_info *sbi = F2FS_SB(sb);
+ struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
+ int i;
+
+ seq_puts(seq, "fault_type injected_count\n");
+
+ for (i = 0; i < FAULT_MAX; i++)
+ seq_printf(seq, "%-24s%-10u\n", f2fs_fault_name[i],
+ ffi->inject_count[i]);
+ return 0;
+}
+#endif
+
int __init f2fs_init_sysfs(void)
{
int ret;
@@ -1770,6 +1788,10 @@ int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
discard_plist_seq_show, sb);
proc_create_single_data("disk_map", 0444, sbi->s_proc,
disk_map_seq_show, sb);
+#ifdef CONFIG_F2FS_FAULT_INJECTION
+ proc_create_single_data("inject_stats", 0444, sbi->s_proc,
+ inject_stats_seq_show, sb);
+#endif
return 0;
put_feature_list_kobj:
kobject_put(&sbi->s_feature_list_kobj);
--
2.48.1
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