diff options
| -rw-r--r-- | Documentation/ABI/testing/sysfs-fs-nilfs2 | 90 | ||||
| -rw-r--r-- | fs/nilfs2/sysfs.c | 270 | ||||
| -rw-r--r-- | fs/nilfs2/sysfs.h | 16 |
3 files changed, 376 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-fs-nilfs2 b/Documentation/ABI/testing/sysfs-fs-nilfs2 index e9b4c61aa88a..c9952f4071e7 100644 --- a/Documentation/ABI/testing/sysfs-fs-nilfs2 +++ b/Documentation/ABI/testing/sysfs-fs-nilfs2 @@ -89,3 +89,93 @@ Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com> Description: Describe attributes of /sys/fs/nilfs2/<device>/superblock group. + +What: /sys/fs/nilfs2/<device>/segctor/last_pseg_block +Date: April 2014 +Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com> +Description: + Show start block number of the latest segment. + +What: /sys/fs/nilfs2/<device>/segctor/last_seg_sequence +Date: April 2014 +Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com> +Description: + Show sequence value of the latest segment. + +What: /sys/fs/nilfs2/<device>/segctor/last_seg_checkpoint +Date: April 2014 +Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com> +Description: + Show checkpoint number of the latest segment. + +What: /sys/fs/nilfs2/<device>/segctor/current_seg_sequence +Date: April 2014 +Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com> +Description: + Show segment sequence counter. + +What: /sys/fs/nilfs2/<device>/segctor/current_last_full_seg +Date: April 2014 +Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com> +Description: + Show index number of the latest full segment. + +What: /sys/fs/nilfs2/<device>/segctor/next_full_seg +Date: April 2014 +Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com> +Description: + Show index number of the full segment index + to be used next. + +What: /sys/fs/nilfs2/<device>/segctor/next_pseg_offset +Date: April 2014 +Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com> +Description: + Show offset of next partial segment in the current + full segment. + +What: /sys/fs/nilfs2/<device>/segctor/next_checkpoint +Date: April 2014 +Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com> +Description: + Show next checkpoint number. + +What: /sys/fs/nilfs2/<device>/segctor/last_seg_write_time +Date: April 2014 +Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com> +Description: + Show write time of the last segment in + human-readable format. + +What: /sys/fs/nilfs2/<device>/segctor/last_seg_write_time_secs +Date: April 2014 +Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com> +Description: + Show write time of the last segment in seconds. + +What: /sys/fs/nilfs2/<device>/segctor/last_nongc_write_time +Date: April 2014 +Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com> +Description: + Show write time of the last segment not for cleaner + operation in human-readable format. + +What: /sys/fs/nilfs2/<device>/segctor/last_nongc_write_time_secs +Date: April 2014 +Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com> +Description: + Show write time of the last segment not for cleaner + operation in seconds. + +What: /sys/fs/nilfs2/<device>/segctor/dirty_data_blocks_count +Date: April 2014 +Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com> +Description: + Show number of dirty data blocks. + +What: /sys/fs/nilfs2/<device>/segctor/README +Date: April 2014 +Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com> +Description: + Describe attributes of /sys/fs/nilfs2/<device>/segctor + group. diff --git a/fs/nilfs2/sysfs.c b/fs/nilfs2/sysfs.c index 239f239da8ae..61454a859e81 100644 --- a/fs/nilfs2/sysfs.c +++ b/fs/nilfs2/sysfs.c @@ -112,6 +112,268 @@ void nilfs_sysfs_delete_##name##_group(struct the_nilfs *nilfs) \ } /************************************************************************ + * NILFS segctor attrs * + ************************************************************************/ + +static ssize_t +nilfs_segctor_last_pseg_block_show(struct nilfs_segctor_attr *attr, + struct the_nilfs *nilfs, + char *buf) +{ + sector_t last_pseg; + + spin_lock(&nilfs->ns_last_segment_lock); + last_pseg = nilfs->ns_last_pseg; + spin_unlock(&nilfs->ns_last_segment_lock); + + return snprintf(buf, PAGE_SIZE, "%llu\n", + (unsigned long long)last_pseg); +} + +static ssize_t +nilfs_segctor_last_seg_sequence_show(struct nilfs_segctor_attr *attr, + struct the_nilfs *nilfs, + char *buf) +{ + u64 last_seq; + + spin_lock(&nilfs->ns_last_segment_lock); + last_seq = nilfs->ns_last_seq; + spin_unlock(&nilfs->ns_last_segment_lock); + + return snprintf(buf, PAGE_SIZE, "%llu\n", last_seq); +} + +static ssize_t +nilfs_segctor_last_seg_checkpoint_show(struct nilfs_segctor_attr *attr, + struct the_nilfs *nilfs, + char *buf) +{ + __u64 last_cno; + + spin_lock(&nilfs->ns_last_segment_lock); + last_cno = nilfs->ns_last_cno; + spin_unlock(&nilfs->ns_last_segment_lock); + + return snprintf(buf, PAGE_SIZE, "%llu\n", last_cno); +} + +static ssize_t +nilfs_segctor_current_seg_sequence_show(struct nilfs_segctor_attr *attr, + struct the_nilfs *nilfs, + char *buf) +{ + u64 seg_seq; + + down_read(&nilfs->ns_sem); + seg_seq = nilfs->ns_seg_seq; + up_read(&nilfs->ns_sem); + + return snprintf(buf, PAGE_SIZE, "%llu\n", seg_seq); +} + +static ssize_t +nilfs_segctor_current_last_full_seg_show(struct nilfs_segctor_attr *attr, + struct the_nilfs *nilfs, + char *buf) +{ + __u64 segnum; + + down_read(&nilfs->ns_sem); + segnum = nilfs->ns_segnum; + up_read(&nilfs->ns_sem); + + return snprintf(buf, PAGE_SIZE, "%llu\n", segnum); +} + +static ssize_t +nilfs_segctor_next_full_seg_show(struct nilfs_segctor_attr *attr, + struct the_nilfs *nilfs, + char *buf) +{ + __u64 nextnum; + + down_read(&nilfs->ns_sem); + nextnum = nilfs->ns_nextnum; + up_read(&nilfs->ns_sem); + + return snprintf(buf, PAGE_SIZE, "%llu\n", nextnum); +} + +static ssize_t +nilfs_segctor_next_pseg_offset_show(struct nilfs_segctor_attr *attr, + struct the_nilfs *nilfs, + char *buf) +{ + unsigned long pseg_offset; + + down_read(&nilfs->ns_sem); + pseg_offset = nilfs->ns_pseg_offset; + up_read(&nilfs->ns_sem); + + return snprintf(buf, PAGE_SIZE, "%lu\n", pseg_offset); +} + +static ssize_t +nilfs_segctor_next_checkpoint_show(struct nilfs_segctor_attr *attr, + struct the_nilfs *nilfs, + char *buf) +{ + __u64 cno; + + down_read(&nilfs->ns_sem); + cno = nilfs->ns_cno; + up_read(&nilfs->ns_sem); + + return snprintf(buf, PAGE_SIZE, "%llu\n", cno); +} + +static ssize_t +nilfs_segctor_last_seg_write_time_show(struct nilfs_segctor_attr *attr, + struct the_nilfs *nilfs, + char *buf) +{ + time_t ctime; + + down_read(&nilfs->ns_sem); + ctime = nilfs->ns_ctime; + up_read(&nilfs->ns_sem); + + return NILFS_SHOW_TIME(ctime, buf); +} + +static ssize_t +nilfs_segctor_last_seg_write_time_secs_show(struct nilfs_segctor_attr *attr, + struct the_nilfs *nilfs, + char *buf) +{ + time_t ctime; + + down_read(&nilfs->ns_sem); + ctime = nilfs->ns_ctime; + up_read(&nilfs->ns_sem); + + return snprintf(buf, PAGE_SIZE, "%llu\n", (unsigned long long)ctime); +} + +static ssize_t +nilfs_segctor_last_nongc_write_time_show(struct nilfs_segctor_attr *attr, + struct the_nilfs *nilfs, + char *buf) +{ + time_t nongc_ctime; + + down_read(&nilfs->ns_sem); + nongc_ctime = nilfs->ns_nongc_ctime; + up_read(&nilfs->ns_sem); + + return NILFS_SHOW_TIME(nongc_ctime, buf); +} + +static ssize_t +nilfs_segctor_last_nongc_write_time_secs_show(struct nilfs_segctor_attr *attr, + struct the_nilfs *nilfs, + char *buf) +{ + time_t nongc_ctime; + + down_read(&nilfs->ns_sem); + nongc_ctime = nilfs->ns_nongc_ctime; + up_read(&nilfs->ns_sem); + + return snprintf(buf, PAGE_SIZE, "%llu\n", + (unsigned long long)nongc_ctime); +} + +static ssize_t +nilfs_segctor_dirty_data_blocks_count_show(struct nilfs_segctor_attr *attr, + struct the_nilfs *nilfs, + char *buf) +{ + u32 ndirtyblks; + + down_read(&nilfs->ns_sem); + ndirtyblks = atomic_read(&nilfs->ns_ndirtyblks); + up_read(&nilfs->ns_sem); + + return snprintf(buf, PAGE_SIZE, "%u\n", ndirtyblks); +} + +static const char segctor_readme_str[] = + "The segctor group contains attributes that describe\n" + "segctor thread activity details.\n\n" + "(1) last_pseg_block\n" + "\tshow start block number of the latest segment.\n\n" + "(2) last_seg_sequence\n" + "\tshow sequence value of the latest segment.\n\n" + "(3) last_seg_checkpoint\n" + "\tshow checkpoint number of the latest segment.\n\n" + "(4) current_seg_sequence\n\tshow segment sequence counter.\n\n" + "(5) current_last_full_seg\n" + "\tshow index number of the latest full segment.\n\n" + "(6) next_full_seg\n" + "\tshow index number of the full segment index to be used next.\n\n" + "(7) next_pseg_offset\n" + "\tshow offset of next partial segment in the current full segment.\n\n" + "(8) next_checkpoint\n\tshow next checkpoint number.\n\n" + "(9) last_seg_write_time\n" + "\tshow write time of the last segment in human-readable format.\n\n" + "(10) last_seg_write_time_secs\n" + "\tshow write time of the last segment in seconds.\n\n" + "(11) last_nongc_write_time\n" + "\tshow write time of the last segment not for cleaner operation " + "in human-readable format.\n\n" + "(12) last_nongc_write_time_secs\n" + "\tshow write time of the last segment not for cleaner operation " + "in seconds.\n\n" + "(13) dirty_data_blocks_count\n" + "\tshow number of dirty data blocks.\n\n"; + +static ssize_t +nilfs_segctor_README_show(struct nilfs_segctor_attr *attr, + struct the_nilfs *nilfs, char *buf) +{ + return snprintf(buf, PAGE_SIZE, segctor_readme_str); +} + +NILFS_SEGCTOR_RO_ATTR(last_pseg_block); +NILFS_SEGCTOR_RO_ATTR(last_seg_sequence); +NILFS_SEGCTOR_RO_ATTR(last_seg_checkpoint); +NILFS_SEGCTOR_RO_ATTR(current_seg_sequence); +NILFS_SEGCTOR_RO_ATTR(current_last_full_seg); +NILFS_SEGCTOR_RO_ATTR(next_full_seg); +NILFS_SEGCTOR_RO_ATTR(next_pseg_offset); +NILFS_SEGCTOR_RO_ATTR(next_checkpoint); +NILFS_SEGCTOR_RO_ATTR(last_seg_write_time); +NILFS_SEGCTOR_RO_ATTR(last_seg_write_time_secs); +NILFS_SEGCTOR_RO_ATTR(last_nongc_write_time); +NILFS_SEGCTOR_RO_ATTR(last_nongc_write_time_secs); +NILFS_SEGCTOR_RO_ATTR(dirty_data_blocks_count); +NILFS_SEGCTOR_RO_ATTR(README); + +static struct attribute *nilfs_segctor_attrs[] = { + NILFS_SEGCTOR_ATTR_LIST(last_pseg_block), + NILFS_SEGCTOR_ATTR_LIST(last_seg_sequence), + NILFS_SEGCTOR_ATTR_LIST(last_seg_checkpoint), + NILFS_SEGCTOR_ATTR_LIST(current_seg_sequence), + NILFS_SEGCTOR_ATTR_LIST(current_last_full_seg), + NILFS_SEGCTOR_ATTR_LIST(next_full_seg), + NILFS_SEGCTOR_ATTR_LIST(next_pseg_offset), + NILFS_SEGCTOR_ATTR_LIST(next_checkpoint), + NILFS_SEGCTOR_ATTR_LIST(last_seg_write_time), + NILFS_SEGCTOR_ATTR_LIST(last_seg_write_time_secs), + NILFS_SEGCTOR_ATTR_LIST(last_nongc_write_time), + NILFS_SEGCTOR_ATTR_LIST(last_nongc_write_time_secs), + NILFS_SEGCTOR_ATTR_LIST(dirty_data_blocks_count), + NILFS_SEGCTOR_ATTR_LIST(README), + NULL, +}; + +NILFS_DEV_INT_GROUP_OPS(segctor, dev); +NILFS_DEV_INT_GROUP_TYPE(segctor, dev); +NILFS_DEV_INT_GROUP_FNS(segctor, dev); + +/************************************************************************ * NILFS superblock attrs * ************************************************************************/ @@ -406,8 +668,15 @@ int nilfs_sysfs_create_device_group(struct super_block *sb) if (err) goto cleanup_dev_kobject; + err = nilfs_sysfs_create_segctor_group(nilfs); + if (err) + goto delete_superblock_group; + return 0; +delete_superblock_group: + nilfs_sysfs_delete_superblock_group(nilfs); + cleanup_dev_kobject: kobject_del(&nilfs->ns_dev_kobj); @@ -421,6 +690,7 @@ failed_create_device_group: void nilfs_sysfs_delete_device_group(struct the_nilfs *nilfs) { nilfs_sysfs_delete_superblock_group(nilfs); + nilfs_sysfs_delete_segctor_group(nilfs); kobject_del(&nilfs->ns_dev_kobj); kfree(nilfs->ns_dev_subgroups); } diff --git a/fs/nilfs2/sysfs.h b/fs/nilfs2/sysfs.h index 1d76af59238c..ad4d5bcc16f5 100644 --- a/fs/nilfs2/sysfs.h +++ b/fs/nilfs2/sysfs.h @@ -28,11 +28,17 @@ * struct nilfs_sysfs_dev_subgroups - device subgroup kernel objects * @sg_superblock_kobj: /sys/fs/<nilfs>/<device>/superblock * @sg_superblock_kobj_unregister: completion state + * @sg_segctor_kobj: /sys/fs/<nilfs>/<device>/segctor + * @sg_segctor_kobj_unregister: completion state */ struct nilfs_sysfs_dev_subgroups { /* /sys/fs/<nilfs>/<device>/superblock */ struct kobject sg_superblock_kobj; struct completion sg_superblock_kobj_unregister; + + /* /sys/fs/<nilfs>/<device>/segctor */ + struct kobject sg_segctor_kobj; + struct completion sg_segctor_kobj_unregister; }; #define NILFS_COMMON_ATTR_STRUCT(name) \ @@ -57,6 +63,7 @@ struct nilfs_##name##_attr { \ NILFS_DEV_ATTR_STRUCT(dev); NILFS_DEV_ATTR_STRUCT(superblock); +NILFS_DEV_ATTR_STRUCT(segctor); #define NILFS_ATTR(type, name, mode, show, store) \ static struct nilfs_##type##_attr nilfs_##type##_attr_##name = \ @@ -90,11 +97,20 @@ NILFS_DEV_ATTR_STRUCT(superblock); #define NILFS_SUPERBLOCK_RW_ATTR(name) \ NILFS_RW_ATTR(superblock, name) +#define NILFS_SEGCTOR_INFO_ATTR(name) \ + NILFS_INFO_ATTR(segctor, name) +#define NILFS_SEGCTOR_RO_ATTR(name) \ + NILFS_RO_ATTR(segctor, name) +#define NILFS_SEGCTOR_RW_ATTR(name) \ + NILFS_RW_ATTR(segctor, name) + #define NILFS_FEATURE_ATTR_LIST(name) \ (&nilfs_feature_attr_##name.attr) #define NILFS_DEV_ATTR_LIST(name) \ (&nilfs_dev_attr_##name.attr) #define NILFS_SUPERBLOCK_ATTR_LIST(name) \ (&nilfs_superblock_attr_##name.attr) +#define NILFS_SEGCTOR_ATTR_LIST(name) \ + (&nilfs_segctor_attr_##name.attr) #endif /* _NILFS_SYSFS_H */ |