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author | Chao Yu <yuchao0@huawei.com> | 2017-03-25 17:19:58 +0800 |
---|---|---|
committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2017-04-05 11:05:02 -0700 |
commit | 8b8dd65f72ccbf7111eb97c4c4f5b5df2a412a07 (patch) | |
tree | 541a512839ed2dd7775d94e81a976efe9841bc48 /fs | |
parent | c13ff37e359bb3eacf4e1760dcea8d9760aa7459 (diff) | |
download | linux-stable-8b8dd65f72ccbf7111eb97c4c4f5b5df2a412a07.tar.gz linux-stable-8b8dd65f72ccbf7111eb97c4c4f5b5df2a412a07.tar.bz2 linux-stable-8b8dd65f72ccbf7111eb97c4c4f5b5df2a412a07.zip |
f2fs: show issued flush/discard count
Show historical count of flush command and discard command.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs')
-rw-r--r-- | fs/f2fs/debug.c | 24 | ||||
-rw-r--r-- | fs/f2fs/f2fs.h | 9 | ||||
-rw-r--r-- | fs/f2fs/segment.c | 37 |
3 files changed, 45 insertions, 25 deletions
diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c index 0baa3ee39392..f27e66ea7ff3 100644 --- a/fs/f2fs/debug.c +++ b/fs/f2fs/debug.c @@ -56,12 +56,18 @@ static void update_general_status(struct f2fs_sb_info *sbi) si->max_vw_cnt = atomic_read(&sbi->max_vw_cnt); si->nr_wb_cp_data = get_pages(sbi, F2FS_WB_CP_DATA); si->nr_wb_data = get_pages(sbi, F2FS_WB_DATA); - if (SM_I(sbi) && SM_I(sbi)->fcc_info) - si->nr_flush = - atomic_read(&SM_I(sbi)->fcc_info->submit_flush); - if (SM_I(sbi) && SM_I(sbi)->dcc_info) - si->nr_discard = - atomic_read(&SM_I(sbi)->dcc_info->submit_discard); + if (SM_I(sbi) && SM_I(sbi)->fcc_info) { + si->nr_flushed = + atomic_read(&SM_I(sbi)->fcc_info->issued_flush); + si->nr_flushing = + atomic_read(&SM_I(sbi)->fcc_info->issing_flush); + } + if (SM_I(sbi) && SM_I(sbi)->dcc_info) { + si->nr_discarded = + atomic_read(&SM_I(sbi)->dcc_info->issued_discard); + si->nr_discarding = + atomic_read(&SM_I(sbi)->dcc_info->issing_discard); + } si->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg; si->rsvd_segs = reserved_segments(sbi); si->overp_segs = overprovision_segments(sbi); @@ -336,9 +342,11 @@ static int stat_show(struct seq_file *s, void *v) seq_printf(s, " - Inner Struct Count: tree: %d(%d), node: %d\n", si->ext_tree, si->zombie_tree, si->ext_node); seq_puts(s, "\nBalancing F2FS Async:\n"); - seq_printf(s, " - IO (CP: %4d, Data: %4d, Flush: %4d, Discard: %4d)\n", + seq_printf(s, " - IO (CP: %4d, Data: %4d, Flush: (%4d %4d), " + "Discard: (%4d %4d))\n", si->nr_wb_cp_data, si->nr_wb_data, - si->nr_flush, si->nr_discard); + si->nr_flushing, si->nr_flushed, + si->nr_discarding, si->nr_discarded); seq_printf(s, " - inmem: %4d, atomic IO: %4d (Max. %4d), " "volatile IO: %4d (Max. %4d)\n", si->inmem_pages, si->aw_cnt, si->max_aw_cnt, diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 6fbdcac01d9a..dbdce5ffe45a 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -214,7 +214,8 @@ struct discard_cmd_control { wait_queue_head_t discard_wait_queue; /* waiting queue for wake-up */ struct mutex cmd_lock; int max_discards; /* max. discards to be issued */ - atomic_t submit_discard; /* # of issued discard */ + atomic_t issued_discard; /* # of issued discard */ + atomic_t issing_discard; /* # of issing discard */ }; /* for the list of fsync inodes, used only during recovery */ @@ -643,7 +644,8 @@ struct flush_cmd { struct flush_cmd_control { struct task_struct *f2fs_issue_flush; /* flush thread */ wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */ - atomic_t submit_flush; /* # of issued flushes */ + atomic_t issued_flush; /* # of issued flushes */ + atomic_t issing_flush; /* # of issing flushes */ struct llist_head issue_list; /* list for command issue */ struct llist_node *dispatch_list; /* list for command dispatch */ }; @@ -2329,7 +2331,8 @@ struct f2fs_stat_info { unsigned int ndirty_dirs, ndirty_files, ndirty_all; int nats, dirty_nats, sits, dirty_sits, free_nids, alloc_nids; int total_count, utilization; - int bg_gc, nr_wb_cp_data, nr_wb_data, nr_flush, nr_discard; + int bg_gc, nr_wb_cp_data, nr_wb_data; + int nr_flushing, nr_flushed, nr_discarding, nr_discarded; int inline_xattr, inline_inode, inline_dir, append, update, orphans; int aw_cnt, max_aw_cnt, vw_cnt, max_vw_cnt; unsigned int valid_count, valid_node_count, valid_inode_count, discard_blks; diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index c5f0075764bf..e9c55dd8579f 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -490,6 +490,8 @@ repeat: fcc->dispatch_list = llist_reverse_order(fcc->dispatch_list); ret = submit_flush_wait(sbi); + atomic_inc(&fcc->issued_flush); + llist_for_each_entry_safe(cmd, next, fcc->dispatch_list, llnode) { cmd->ret = ret; @@ -507,25 +509,29 @@ int f2fs_issue_flush(struct f2fs_sb_info *sbi) { struct flush_cmd_control *fcc = SM_I(sbi)->fcc_info; struct flush_cmd cmd; + int ret; if (test_opt(sbi, NOBARRIER)) return 0; - if (!test_opt(sbi, FLUSH_MERGE)) - return submit_flush_wait(sbi); - - if (!atomic_read(&fcc->submit_flush)) { - int ret; + if (!test_opt(sbi, FLUSH_MERGE)) { + ret = submit_flush_wait(sbi); + atomic_inc(&fcc->issued_flush); + return ret; + } - atomic_inc(&fcc->submit_flush); + if (!atomic_read(&fcc->issing_flush)) { + atomic_inc(&fcc->issing_flush); ret = submit_flush_wait(sbi); - atomic_dec(&fcc->submit_flush); + atomic_dec(&fcc->issing_flush); + + atomic_inc(&fcc->issued_flush); return ret; } init_completion(&cmd.wait); - atomic_inc(&fcc->submit_flush); + atomic_inc(&fcc->issing_flush); llist_add(&cmd.llnode, &fcc->issue_list); if (!fcc->dispatch_list) @@ -533,10 +539,10 @@ int f2fs_issue_flush(struct f2fs_sb_info *sbi) if (fcc->f2fs_issue_flush) { wait_for_completion(&cmd.wait); - atomic_dec(&fcc->submit_flush); + atomic_dec(&fcc->issing_flush); } else { llist_del_all(&fcc->issue_list); - atomic_set(&fcc->submit_flush, 0); + atomic_set(&fcc->issing_flush, 0); } return cmd.ret; @@ -556,7 +562,8 @@ int create_flush_cmd_control(struct f2fs_sb_info *sbi) fcc = kzalloc(sizeof(struct flush_cmd_control), GFP_KERNEL); if (!fcc) return -ENOMEM; - atomic_set(&fcc->submit_flush, 0); + atomic_set(&fcc->issued_flush, 0); + atomic_set(&fcc->issing_flush, 0); init_waitqueue_head(&fcc->flush_wait_queue); init_llist_head(&fcc->issue_list); SM_I(sbi)->fcc_info = fcc; @@ -691,7 +698,7 @@ static void __add_discard_cmd(struct f2fs_sb_info *sbi, static void __remove_discard_cmd(struct f2fs_sb_info *sbi, struct discard_cmd *dc) { if (dc->state == D_DONE) - atomic_dec(&(SM_I(sbi)->dcc_info->submit_discard)); + atomic_dec(&(SM_I(sbi)->dcc_info->issing_discard)); if (dc->error == -EOPNOTSUPP) dc->error = 0; @@ -730,7 +737,8 @@ static void __submit_discard_cmd(struct f2fs_sb_info *sbi, if (!dc->error) { /* should keep before submission to avoid D_DONE right away */ dc->state = D_SUBMIT; - atomic_inc(&dcc->submit_discard); + atomic_inc(&dcc->issued_discard); + atomic_inc(&dcc->issing_discard); if (bio) { bio->bi_private = dc; bio->bi_end_io = f2fs_submit_discard_endio; @@ -1135,7 +1143,8 @@ static int create_discard_cmd_control(struct f2fs_sb_info *sbi) INIT_LIST_HEAD(&dcc->discard_entry_list); INIT_LIST_HEAD(&dcc->discard_cmd_list); mutex_init(&dcc->cmd_lock); - atomic_set(&dcc->submit_discard, 0); + atomic_set(&dcc->issued_discard, 0); + atomic_set(&dcc->issing_discard, 0); dcc->nr_discards = 0; dcc->max_discards = 0; |