| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * f2fs sysfs interface |
| * |
| * Copyright (c) 2012 Samsung Electronics Co., Ltd. |
| * http://www.samsung.com/ |
| * Copyright (c) 2017 Chao Yu <chao@kernel.org> |
| */ |
| #include <linux/compiler.h> |
| #include <linux/proc_fs.h> |
| #include <linux/f2fs_fs.h> |
| #include <linux/seq_file.h> |
| #include <linux/unicode.h> |
| |
| #include "f2fs.h" |
| #include "segment.h" |
| #include "gc.h" |
| |
| static struct proc_dir_entry *f2fs_proc_root; |
| |
| /* Sysfs support for f2fs */ |
| enum { |
| GC_THREAD, /* struct f2fs_gc_thread */ |
| SM_INFO, /* struct f2fs_sm_info */ |
| DCC_INFO, /* struct discard_cmd_control */ |
| NM_INFO, /* struct f2fs_nm_info */ |
| F2FS_SBI, /* struct f2fs_sb_info */ |
| #ifdef CONFIG_F2FS_FAULT_INJECTION |
| FAULT_INFO_RATE, /* struct f2fs_fault_info */ |
| FAULT_INFO_TYPE, /* struct f2fs_fault_info */ |
| #endif |
| RESERVED_BLOCKS, /* struct f2fs_sb_info */ |
| }; |
| |
| struct f2fs_attr { |
| struct attribute attr; |
| ssize_t (*show)(struct f2fs_attr *, struct f2fs_sb_info *, char *); |
| ssize_t (*store)(struct f2fs_attr *, struct f2fs_sb_info *, |
| const char *, size_t); |
| int struct_type; |
| int offset; |
| int id; |
| }; |
| |
| static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type) |
| { |
| if (struct_type == GC_THREAD) |
| return (unsigned char *)sbi->gc_thread; |
| else if (struct_type == SM_INFO) |
| return (unsigned char *)SM_I(sbi); |
| else if (struct_type == DCC_INFO) |
| return (unsigned char *)SM_I(sbi)->dcc_info; |
| else if (struct_type == NM_INFO) |
| return (unsigned char *)NM_I(sbi); |
| else if (struct_type == F2FS_SBI || struct_type == RESERVED_BLOCKS) |
| return (unsigned char *)sbi; |
| #ifdef CONFIG_F2FS_FAULT_INJECTION |
| else if (struct_type == FAULT_INFO_RATE || |
| struct_type == FAULT_INFO_TYPE) |
| return (unsigned char *)&F2FS_OPTION(sbi).fault_info; |
| #endif |
| return NULL; |
| } |
| |
| static ssize_t dirty_segments_show(struct f2fs_attr *a, |
| struct f2fs_sb_info *sbi, char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "%llu\n", |
| (unsigned long long)(dirty_segments(sbi))); |
| } |
| |
| static ssize_t unusable_show(struct f2fs_attr *a, |
| struct f2fs_sb_info *sbi, char *buf) |
| { |
| block_t unusable; |
| |
| if (test_opt(sbi, DISABLE_CHECKPOINT)) |
| unusable = sbi->unusable_block_count; |
| else |
| unusable = f2fs_get_unusable_blocks(sbi); |
| return snprintf(buf, PAGE_SIZE, "%llu\n", |
| (unsigned long long)unusable); |
| } |
| |
| static ssize_t encoding_show(struct f2fs_attr *a, |
| struct f2fs_sb_info *sbi, char *buf) |
| { |
| #ifdef CONFIG_UNICODE |
| if (f2fs_sb_has_casefold(sbi)) |
| return snprintf(buf, PAGE_SIZE, "%s (%d.%d.%d)\n", |
| sbi->s_encoding->charset, |
| (sbi->s_encoding->version >> 16) & 0xff, |
| (sbi->s_encoding->version >> 8) & 0xff, |
| sbi->s_encoding->version & 0xff); |
| #endif |
| return snprintf(buf, PAGE_SIZE, "(none)"); |
| } |
| |
| static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a, |
| struct f2fs_sb_info *sbi, char *buf) |
| { |
| struct super_block *sb = sbi->sb; |
| |
| if (!sb->s_bdev->bd_part) |
| return snprintf(buf, PAGE_SIZE, "0\n"); |
| |
| return snprintf(buf, PAGE_SIZE, "%llu\n", |
| (unsigned long long)(sbi->kbytes_written + |
| BD_PART_WRITTEN(sbi))); |
| } |
| |
| static ssize_t features_show(struct f2fs_attr *a, |
| struct f2fs_sb_info *sbi, char *buf) |
| { |
| struct super_block *sb = sbi->sb; |
| int len = 0; |
| |
| if (!sb->s_bdev->bd_part) |
| return snprintf(buf, PAGE_SIZE, "0\n"); |
| |
| if (f2fs_sb_has_encrypt(sbi)) |
| len += snprintf(buf, PAGE_SIZE - len, "%s", |
| "encryption"); |
| if (f2fs_sb_has_blkzoned(sbi)) |
| len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", |
| len ? ", " : "", "blkzoned"); |
| if (f2fs_sb_has_extra_attr(sbi)) |
| len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", |
| len ? ", " : "", "extra_attr"); |
| if (f2fs_sb_has_project_quota(sbi)) |
| len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", |
| len ? ", " : "", "projquota"); |
| if (f2fs_sb_has_inode_chksum(sbi)) |
| len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", |
| len ? ", " : "", "inode_checksum"); |
| if (f2fs_sb_has_flexible_inline_xattr(sbi)) |
| len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", |
| len ? ", " : "", "flexible_inline_xattr"); |
| if (f2fs_sb_has_quota_ino(sbi)) |
| len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", |
| len ? ", " : "", "quota_ino"); |
| if (f2fs_sb_has_inode_crtime(sbi)) |
| len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", |
| len ? ", " : "", "inode_crtime"); |
| if (f2fs_sb_has_lost_found(sbi)) |
| len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", |
| len ? ", " : "", "lost_found"); |
| if (f2fs_sb_has_verity(sbi)) |
| len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", |
| len ? ", " : "", "verity"); |
| if (f2fs_sb_has_sb_chksum(sbi)) |
| len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", |
| len ? ", " : "", "sb_checksum"); |
| if (f2fs_sb_has_casefold(sbi)) |
| len += snprintf(buf + len, PAGE_SIZE - len, "%s%s", |
| len ? ", " : "", "casefold"); |
| len += snprintf(buf + len, PAGE_SIZE - len, "\n"); |
| return len; |
| } |
| |
| static ssize_t current_reserved_blocks_show(struct f2fs_attr *a, |
| struct f2fs_sb_info *sbi, char *buf) |
| { |
| return snprintf(buf, PAGE_SIZE, "%u\n", sbi->current_reserved_blocks); |
| } |
| |
| static ssize_t f2fs_sbi_show(struct f2fs_attr *a, |
| struct f2fs_sb_info *sbi, char *buf) |
| { |
| unsigned char *ptr = NULL; |
| unsigned int *ui; |
| |
| ptr = __struct_ptr(sbi, a->struct_type); |
| if (!ptr) |
| return -EINVAL; |
| |
| if (!strcmp(a->attr.name, "extension_list")) { |
| __u8 (*extlist)[F2FS_EXTENSION_LEN] = |
| sbi->raw_super->extension_list; |
| int cold_count = le32_to_cpu(sbi->raw_super->extension_count); |
| int hot_count = sbi->raw_super->hot_ext_count; |
| int len = 0, i; |
| |
| len += snprintf(buf + len, PAGE_SIZE - len, |
| "cold file extension:\n"); |
| for (i = 0; i < cold_count; i++) |
| len += snprintf(buf + len, PAGE_SIZE - len, "%s\n", |
| extlist[i]); |
| |
| len += snprintf(buf + len, PAGE_SIZE - len, |
| "hot file extension:\n"); |
| for (i = cold_count; i < cold_count + hot_count; i++) |
| len += snprintf(buf + len, PAGE_SIZE - len, "%s\n", |
| extlist[i]); |
| return len; |
| } |
| |
| ui = (unsigned int *)(ptr + a->offset); |
| |
| return snprintf(buf, PAGE_SIZE, "%u\n", *ui); |
| } |
| |
| static ssize_t __sbi_store(struct f2fs_attr *a, |
| struct f2fs_sb_info *sbi, |
| const char *buf, size_t count) |
| { |
| unsigned char *ptr; |
| unsigned long t; |
| unsigned int *ui; |
| ssize_t ret; |
| |
| ptr = __struct_ptr(sbi, a->struct_type); |
| if (!ptr) |
| return -EINVAL; |
| |
| if (!strcmp(a->attr.name, "extension_list")) { |
| const char *name = strim((char *)buf); |
| bool set = true, hot; |
| |
| if (!strncmp(name, "[h]", 3)) |
| hot = true; |
| else if (!strncmp(name, "[c]", 3)) |
| hot = false; |
| else |
| return -EINVAL; |
| |
| name += 3; |
| |
| if (*name == '!') { |
| name++; |
| set = false; |
| } |
| |
| if (strlen(name) >= F2FS_EXTENSION_LEN) |
| return -EINVAL; |
| |
| down_write(&sbi->sb_lock); |
| |
| ret = f2fs_update_extension_list(sbi, name, hot, set); |
| if (ret) |
| goto out; |
| |
| ret = f2fs_commit_super(sbi, false); |
| if (ret) |
| f2fs_update_extension_list(sbi, name, hot, !set); |
| out: |
| up_write(&sbi->sb_lock); |
| return ret ? ret : count; |
| } |
| |
| ui = (unsigned int *)(ptr + a->offset); |
| |
| ret = kstrtoul(skip_spaces(buf), 0, &t); |
| if (ret < 0) |
| return ret; |
| #ifdef CONFIG_F2FS_FAULT_INJECTION |
| if (a->struct_type == FAULT_INFO_TYPE && t >= (1 << FAULT_MAX)) |
| return -EINVAL; |
| if (a->struct_type == FAULT_INFO_RATE && t >= UINT_MAX) |
| return -EINVAL; |
| #endif |
| if (a->struct_type == RESERVED_BLOCKS) { |
| spin_lock(&sbi->stat_lock); |
| if (t > (unsigned long)(sbi->user_block_count - |
| F2FS_OPTION(sbi).root_reserved_blocks)) { |
| spin_unlock(&sbi->stat_lock); |
| return -EINVAL; |
| } |
| *ui = t; |
| sbi->current_reserved_blocks = min(sbi->reserved_blocks, |
| sbi->user_block_count - valid_user_blocks(sbi)); |
| spin_unlock(&sbi->stat_lock); |
| return count; |
| } |
| |
| if (!strcmp(a->attr.name, "discard_granularity")) { |
| if (t == 0 || t > MAX_PLIST_NUM) |
| return -EINVAL; |
| if (t == *ui) |
| return count; |
| *ui = t; |
| return count; |
| } |
| |
| if (!strcmp(a->attr.name, "migration_granularity")) { |
| if (t == 0 || t > sbi->segs_per_sec) |
| return -EINVAL; |
| } |
| |
| if (!strcmp(a->attr.name, "trim_sections")) |
| return -EINVAL; |
| |
| if (!strcmp(a->attr.name, "gc_urgent")) { |
| if (t >= 1) { |
| sbi->gc_mode = GC_URGENT; |
| if (sbi->gc_thread) { |
| sbi->gc_thread->gc_wake = 1; |
| wake_up_interruptible_all( |
| &sbi->gc_thread->gc_wait_queue_head); |
| wake_up_discard_thread(sbi, true); |
| } |
| } else { |
| sbi->gc_mode = GC_NORMAL; |
| } |
| return count; |
| } |
| if (!strcmp(a->attr.name, "gc_idle")) { |
| if (t == GC_IDLE_CB) |
| sbi->gc_mode = GC_IDLE_CB; |
| else if (t == GC_IDLE_GREEDY) |
| sbi->gc_mode = GC_IDLE_GREEDY; |
| else |
| sbi->gc_mode = GC_NORMAL; |
| return count; |
| } |
| |
| |
| if (!strcmp(a->attr.name, "iostat_enable")) { |
| sbi->iostat_enable = !!t; |
| if (!sbi->iostat_enable) |
| f2fs_reset_iostat(sbi); |
| return count; |
| } |
| |
| *ui = (unsigned int)t; |
| |
| return count; |
| } |
| |
| static ssize_t f2fs_sbi_store(struct f2fs_attr *a, |
| struct f2fs_sb_info *sbi, |
| const char *buf, size_t count) |
| { |
| ssize_t ret; |
| bool gc_entry = (!strcmp(a->attr.name, "gc_urgent") || |
| a->struct_type == GC_THREAD); |
| |
| if (gc_entry) { |
| if (!down_read_trylock(&sbi->sb->s_umount)) |
| return -EAGAIN; |
| } |
| ret = __sbi_store(a, sbi, buf, count); |
| if (gc_entry) |
| up_read(&sbi->sb->s_umount); |
| |
| return ret; |
| } |
| |
| static ssize_t f2fs_attr_show(struct kobject *kobj, |
| struct attribute *attr, char *buf) |
| { |
| struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, |
| s_kobj); |
| struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); |
| |
| return a->show ? a->show(a, sbi, buf) : 0; |
| } |
| |
| static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr, |
| const char *buf, size_t len) |
| { |
| struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, |
| s_kobj); |
| struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); |
| |
| return a->store ? a->store(a, sbi, buf, len) : 0; |
| } |
| |
| static void f2fs_sb_release(struct kobject *kobj) |
| { |
| struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, |
| s_kobj); |
| complete(&sbi->s_kobj_unregister); |
| } |
| |
| enum feat_id { |
| FEAT_CRYPTO = 0, |
| FEAT_BLKZONED, |
| FEAT_ATOMIC_WRITE, |
| FEAT_EXTRA_ATTR, |
| FEAT_PROJECT_QUOTA, |
| FEAT_INODE_CHECKSUM, |
| FEAT_FLEXIBLE_INLINE_XATTR, |
| FEAT_QUOTA_INO, |
| FEAT_INODE_CRTIME, |
| FEAT_LOST_FOUND, |
| FEAT_VERITY, |
| FEAT_SB_CHECKSUM, |
| FEAT_CASEFOLD, |
| }; |
| |
| static ssize_t f2fs_feature_show(struct f2fs_attr *a, |
| struct f2fs_sb_info *sbi, char *buf) |
| { |
| switch (a->id) { |
| case FEAT_CRYPTO: |
| case FEAT_BLKZONED: |
| case FEAT_ATOMIC_WRITE: |
| case FEAT_EXTRA_ATTR: |
| case FEAT_PROJECT_QUOTA: |
| case FEAT_INODE_CHECKSUM: |
| case FEAT_FLEXIBLE_INLINE_XATTR: |
| case FEAT_QUOTA_INO: |
| case FEAT_INODE_CRTIME: |
| case FEAT_LOST_FOUND: |
| case FEAT_VERITY: |
| case FEAT_SB_CHECKSUM: |
| case FEAT_CASEFOLD: |
| return snprintf(buf, PAGE_SIZE, "supported\n"); |
| } |
| return 0; |
| } |
| |
| #define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \ |
| static struct f2fs_attr f2fs_attr_##_name = { \ |
| .attr = {.name = __stringify(_name), .mode = _mode }, \ |
| .show = _show, \ |
| .store = _store, \ |
| .struct_type = _struct_type, \ |
| .offset = _offset \ |
| } |
| |
| #define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \ |
| F2FS_ATTR_OFFSET(struct_type, name, 0644, \ |
| f2fs_sbi_show, f2fs_sbi_store, \ |
| offsetof(struct struct_name, elname)) |
| |
| #define F2FS_GENERAL_RO_ATTR(name) \ |
| static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL) |
| |
| #define F2FS_FEATURE_RO_ATTR(_name, _id) \ |
| static struct f2fs_attr f2fs_attr_##_name = { \ |
| .attr = {.name = __stringify(_name), .mode = 0444 }, \ |
| .show = f2fs_feature_show, \ |
| .id = _id, \ |
| } |
| |
| F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_urgent_sleep_time, |
| urgent_sleep_time); |
| F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_min_sleep_time, min_sleep_time); |
| F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_max_sleep_time, max_sleep_time); |
| F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_no_gc_sleep_time, no_gc_sleep_time); |
| F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle, gc_mode); |
| F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_urgent, gc_mode); |
| F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, reclaim_segments, rec_prefree_segments); |
| F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, max_small_discards, max_discards); |
| F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, discard_granularity, discard_granularity); |
| F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, reserved_blocks, reserved_blocks); |
| F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, batched_trim_sections, trim_sections); |
| F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, ipu_policy, ipu_policy); |
| F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ipu_util, min_ipu_util); |
| F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_fsync_blocks, min_fsync_blocks); |
| F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_seq_blocks, min_seq_blocks); |
| F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_hot_blocks, min_hot_blocks); |
| F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ssr_sections, min_ssr_sections); |
| F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh); |
| F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ra_nid_pages, ra_nid_pages); |
| F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, dirty_nats_ratio, dirty_nats_ratio); |
| F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search); |
| F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, migration_granularity, migration_granularity); |
| F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level); |
| F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, cp_interval, interval_time[CP_TIME]); |
| F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]); |
| F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, discard_idle_interval, |
| interval_time[DISCARD_TIME]); |
| 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]); |
| F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, iostat_enable, iostat_enable); |
| F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, readdir_ra, readdir_ra); |
| F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_pin_file_thresh, gc_pin_file_threshold); |
| F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list); |
| #ifdef CONFIG_F2FS_FAULT_INJECTION |
| F2FS_RW_ATTR(FAULT_INFO_RATE, f2fs_fault_info, inject_rate, inject_rate); |
| F2FS_RW_ATTR(FAULT_INFO_TYPE, f2fs_fault_info, inject_type, inject_type); |
| #endif |
| F2FS_GENERAL_RO_ATTR(dirty_segments); |
| F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes); |
| F2FS_GENERAL_RO_ATTR(features); |
| F2FS_GENERAL_RO_ATTR(current_reserved_blocks); |
| F2FS_GENERAL_RO_ATTR(unusable); |
| F2FS_GENERAL_RO_ATTR(encoding); |
| |
| #ifdef CONFIG_FS_ENCRYPTION |
| F2FS_FEATURE_RO_ATTR(encryption, FEAT_CRYPTO); |
| #endif |
| #ifdef CONFIG_BLK_DEV_ZONED |
| F2FS_FEATURE_RO_ATTR(block_zoned, FEAT_BLKZONED); |
| #endif |
| F2FS_FEATURE_RO_ATTR(atomic_write, FEAT_ATOMIC_WRITE); |
| F2FS_FEATURE_RO_ATTR(extra_attr, FEAT_EXTRA_ATTR); |
| F2FS_FEATURE_RO_ATTR(project_quota, FEAT_PROJECT_QUOTA); |
| F2FS_FEATURE_RO_ATTR(inode_checksum, FEAT_INODE_CHECKSUM); |
| F2FS_FEATURE_RO_ATTR(flexible_inline_xattr, FEAT_FLEXIBLE_INLINE_XATTR); |
| F2FS_FEATURE_RO_ATTR(quota_ino, FEAT_QUOTA_INO); |
| F2FS_FEATURE_RO_ATTR(inode_crtime, FEAT_INODE_CRTIME); |
| F2FS_FEATURE_RO_ATTR(lost_found, FEAT_LOST_FOUND); |
| #ifdef CONFIG_FS_VERITY |
| F2FS_FEATURE_RO_ATTR(verity, FEAT_VERITY); |
| #endif |
| F2FS_FEATURE_RO_ATTR(sb_checksum, FEAT_SB_CHECKSUM); |
| #ifdef CONFIG_UNICODE |
| F2FS_FEATURE_RO_ATTR(casefold, FEAT_CASEFOLD); |
| #endif |
| |
| #define ATTR_LIST(name) (&f2fs_attr_##name.attr) |
| static struct attribute *f2fs_attrs[] = { |
| ATTR_LIST(gc_urgent_sleep_time), |
| ATTR_LIST(gc_min_sleep_time), |
| ATTR_LIST(gc_max_sleep_time), |
| ATTR_LIST(gc_no_gc_sleep_time), |
| ATTR_LIST(gc_idle), |
| ATTR_LIST(gc_urgent), |
| ATTR_LIST(reclaim_segments), |
| ATTR_LIST(max_small_discards), |
| ATTR_LIST(discard_granularity), |
| ATTR_LIST(batched_trim_sections), |
| ATTR_LIST(ipu_policy), |
| ATTR_LIST(min_ipu_util), |
| ATTR_LIST(min_fsync_blocks), |
| ATTR_LIST(min_seq_blocks), |
| ATTR_LIST(min_hot_blocks), |
| ATTR_LIST(min_ssr_sections), |
| ATTR_LIST(max_victim_search), |
| ATTR_LIST(migration_granularity), |
| ATTR_LIST(dir_level), |
| ATTR_LIST(ram_thresh), |
| ATTR_LIST(ra_nid_pages), |
| ATTR_LIST(dirty_nats_ratio), |
| ATTR_LIST(cp_interval), |
| ATTR_LIST(idle_interval), |
| ATTR_LIST(discard_idle_interval), |
| ATTR_LIST(gc_idle_interval), |
| ATTR_LIST(umount_discard_timeout), |
| ATTR_LIST(iostat_enable), |
| ATTR_LIST(readdir_ra), |
| ATTR_LIST(gc_pin_file_thresh), |
| ATTR_LIST(extension_list), |
| #ifdef CONFIG_F2FS_FAULT_INJECTION |
| ATTR_LIST(inject_rate), |
| ATTR_LIST(inject_type), |
| #endif |
| ATTR_LIST(dirty_segments), |
| ATTR_LIST(unusable), |
| ATTR_LIST(lifetime_write_kbytes), |
| ATTR_LIST(features), |
| ATTR_LIST(reserved_blocks), |
| ATTR_LIST(current_reserved_blocks), |
| ATTR_LIST(encoding), |
| NULL, |
| }; |
| ATTRIBUTE_GROUPS(f2fs); |
| |
| static struct attribute *f2fs_feat_attrs[] = { |
| #ifdef CONFIG_FS_ENCRYPTION |
| ATTR_LIST(encryption), |
| #endif |
| #ifdef CONFIG_BLK_DEV_ZONED |
| ATTR_LIST(block_zoned), |
| #endif |
| ATTR_LIST(atomic_write), |
| ATTR_LIST(extra_attr), |
| ATTR_LIST(project_quota), |
| ATTR_LIST(inode_checksum), |
| ATTR_LIST(flexible_inline_xattr), |
| ATTR_LIST(quota_ino), |
| ATTR_LIST(inode_crtime), |
| ATTR_LIST(lost_found), |
| #ifdef CONFIG_FS_VERITY |
| ATTR_LIST(verity), |
| #endif |
| ATTR_LIST(sb_checksum), |
| #ifdef CONFIG_UNICODE |
| ATTR_LIST(casefold), |
| #endif |
| NULL, |
| }; |
| ATTRIBUTE_GROUPS(f2fs_feat); |
| |
| static const struct sysfs_ops f2fs_attr_ops = { |
| .show = f2fs_attr_show, |
| .store = f2fs_attr_store, |
| }; |
| |
| static struct kobj_type f2fs_sb_ktype = { |
| .default_groups = f2fs_groups, |
| .sysfs_ops = &f2fs_attr_ops, |
| .release = f2fs_sb_release, |
| }; |
| |
| static struct kobj_type f2fs_ktype = { |
| .sysfs_ops = &f2fs_attr_ops, |
| }; |
| |
| static struct kset f2fs_kset = { |
| .kobj = {.ktype = &f2fs_ktype}, |
| }; |
| |
| static struct kobj_type f2fs_feat_ktype = { |
| .default_groups = f2fs_feat_groups, |
| .sysfs_ops = &f2fs_attr_ops, |
| }; |
| |
| static struct kobject f2fs_feat = { |
| .kset = &f2fs_kset, |
| }; |
| |
| static int __maybe_unused segment_info_seq_show(struct seq_file *seq, |
| void *offset) |
| { |
| struct super_block *sb = seq->private; |
| struct f2fs_sb_info *sbi = F2FS_SB(sb); |
| unsigned int total_segs = |
| le32_to_cpu(sbi->raw_super->segment_count_main); |
| int i; |
| |
| seq_puts(seq, "format: segment_type|valid_blocks\n" |
| "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); |
| |
| for (i = 0; i < total_segs; i++) { |
| struct seg_entry *se = get_seg_entry(sbi, i); |
| |
| if ((i % 10) == 0) |
| seq_printf(seq, "%-10d", i); |
| seq_printf(seq, "%d|%-3u", se->type, se->valid_blocks); |
| if ((i % 10) == 9 || i == (total_segs - 1)) |
| seq_putc(seq, '\n'); |
| else |
| seq_putc(seq, ' '); |
| } |
| |
| return 0; |
| } |
| |
| static int __maybe_unused segment_bits_seq_show(struct seq_file *seq, |
| void *offset) |
| { |
| struct super_block *sb = seq->private; |
| struct f2fs_sb_info *sbi = F2FS_SB(sb); |
| unsigned int total_segs = |
| le32_to_cpu(sbi->raw_super->segment_count_main); |
| int i, j; |
| |
| seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n" |
| "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); |
| |
| for (i = 0; i < total_segs; i++) { |
| struct seg_entry *se = get_seg_entry(sbi, i); |
| |
| seq_printf(seq, "%-10d", i); |
| seq_printf(seq, "%d|%-3u|", se->type, se->valid_blocks); |
| for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++) |
| seq_printf(seq, " %.2x", se->cur_valid_map[j]); |
| seq_putc(seq, '\n'); |
| } |
| return 0; |
| } |
| |
| 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 IOs */ |
| seq_printf(seq, "app buffered: %-16llu\n", |
| sbi->write_iostat[APP_BUFFERED_IO]); |
| seq_printf(seq, "app direct: %-16llu\n", |
| sbi->write_iostat[APP_DIRECT_IO]); |
| seq_printf(seq, "app mapped: %-16llu\n", |
| sbi->write_iostat[APP_MAPPED_IO]); |
| |
| /* print fs IOs */ |
| seq_printf(seq, "fs data: %-16llu\n", |
| sbi->write_iostat[FS_DATA_IO]); |
| seq_printf(seq, "fs node: %-16llu\n", |
| sbi->write_iostat[FS_NODE_IO]); |
| seq_printf(seq, "fs meta: %-16llu\n", |
| sbi->write_iostat[FS_META_IO]); |
| seq_printf(seq, "fs gc data: %-16llu\n", |
| sbi->write_iostat[FS_GC_DATA_IO]); |
| seq_printf(seq, "fs gc node: %-16llu\n", |
| sbi->write_iostat[FS_GC_NODE_IO]); |
| seq_printf(seq, "fs cp data: %-16llu\n", |
| sbi->write_iostat[FS_CP_DATA_IO]); |
| seq_printf(seq, "fs cp node: %-16llu\n", |
| sbi->write_iostat[FS_CP_NODE_IO]); |
| seq_printf(seq, "fs cp meta: %-16llu\n", |
| sbi->write_iostat[FS_CP_META_IO]); |
| seq_printf(seq, "fs discard: %-16llu\n", |
| sbi->write_iostat[FS_DISCARD]); |
| |
| return 0; |
| } |
| |
| static int __maybe_unused victim_bits_seq_show(struct seq_file *seq, |
| void *offset) |
| { |
| struct super_block *sb = seq->private; |
| struct f2fs_sb_info *sbi = F2FS_SB(sb); |
| struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); |
| int i; |
| |
| seq_puts(seq, "format: victim_secmap bitmaps\n"); |
| |
| for (i = 0; i < MAIN_SECS(sbi); i++) { |
| if ((i % 10) == 0) |
| seq_printf(seq, "%-10d", i); |
| seq_printf(seq, "%d", test_bit(i, dirty_i->victim_secmap) ? 1 : 0); |
| if ((i % 10) == 9 || i == (MAIN_SECS(sbi) - 1)) |
| seq_putc(seq, '\n'); |
| else |
| seq_putc(seq, ' '); |
| } |
| return 0; |
| } |
| |
| int __init f2fs_init_sysfs(void) |
| { |
| int ret; |
| |
| kobject_set_name(&f2fs_kset.kobj, "f2fs"); |
| f2fs_kset.kobj.parent = fs_kobj; |
| ret = kset_register(&f2fs_kset); |
| if (ret) |
| return ret; |
| |
| ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype, |
| NULL, "features"); |
| if (ret) { |
| kobject_put(&f2fs_feat); |
| kset_unregister(&f2fs_kset); |
| } else { |
| f2fs_proc_root = proc_mkdir("fs/f2fs", NULL); |
| } |
| return ret; |
| } |
| |
| void f2fs_exit_sysfs(void) |
| { |
| kobject_put(&f2fs_feat); |
| kset_unregister(&f2fs_kset); |
| remove_proc_entry("fs/f2fs", NULL); |
| f2fs_proc_root = NULL; |
| } |
| |
| int f2fs_register_sysfs(struct f2fs_sb_info *sbi) |
| { |
| struct super_block *sb = sbi->sb; |
| int err; |
| |
| sbi->s_kobj.kset = &f2fs_kset; |
| init_completion(&sbi->s_kobj_unregister); |
| err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL, |
| "%s", sb->s_id); |
| if (err) { |
| kobject_put(&sbi->s_kobj); |
| wait_for_completion(&sbi->s_kobj_unregister); |
| return err; |
| } |
| |
| if (f2fs_proc_root) |
| sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root); |
| |
| if (sbi->s_proc) { |
| proc_create_single_data("segment_info", S_IRUGO, sbi->s_proc, |
| segment_info_seq_show, sb); |
| proc_create_single_data("segment_bits", S_IRUGO, sbi->s_proc, |
| segment_bits_seq_show, sb); |
| proc_create_single_data("iostat_info", S_IRUGO, sbi->s_proc, |
| iostat_info_seq_show, sb); |
| proc_create_single_data("victim_bits", S_IRUGO, sbi->s_proc, |
| victim_bits_seq_show, sb); |
| } |
| return 0; |
| } |
| |
| void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi) |
| { |
| if (sbi->s_proc) { |
| remove_proc_entry("iostat_info", sbi->s_proc); |
| remove_proc_entry("segment_info", sbi->s_proc); |
| remove_proc_entry("segment_bits", sbi->s_proc); |
| remove_proc_entry("victim_bits", sbi->s_proc); |
| remove_proc_entry(sbi->sb->s_id, f2fs_proc_root); |
| } |
| kobject_del(&sbi->s_kobj); |
| kobject_put(&sbi->s_kobj); |
| wait_for_completion(&sbi->s_kobj_unregister); |
| } |