Messages in this thread Patch in this message | | | From | Yangtao Li <> | Subject | [PATCH] f2fs: add iostat latency statistics support for discard | Date | Thu, 16 Feb 2023 19:29:15 +0800 |
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In this patch, it adds to account discard latency.
Signed-off-by: Yangtao Li <frank.li@vivo.com> --- fs/f2fs/data.c | 2 +- fs/f2fs/f2fs.h | 1 + fs/f2fs/iostat.c | 83 +++++++++++++++++++++---------------- fs/f2fs/iostat.h | 49 +++++++++++----------- fs/f2fs/segment.c | 8 +++- include/trace/events/f2fs.h | 68 ++++++++++++++++-------------- 6 files changed, 118 insertions(+), 93 deletions(-)
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 28e09682b056..b67c0b41ee13 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -2312,7 +2312,7 @@ int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret, if (bio_add_page(bio, page, blocksize, 0) < blocksize) goto submit_and_realloc; - ctx = get_post_read_ctx(bio); + ctx = get_bio_iostat_private(bio); ctx->enabled_steps |= STEP_DECOMPRESS; refcount_inc(&dic->refcnt); diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 21596e0266ba..29e973f67c3c 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -1131,6 +1131,7 @@ enum page_type { META_FLUSH, IPU, /* the below types are used by tracepoints only. */ OPU, + DISCARD, /* used by iostat */ }; enum temp_type { diff --git a/fs/f2fs/iostat.c b/fs/f2fs/iostat.c index 3d5bfb1ad585..304235b4f543 100644 --- a/fs/f2fs/iostat.c +++ b/fs/f2fs/iostat.c @@ -86,23 +86,21 @@ int __maybe_unused iostat_info_seq_show(struct seq_file *seq, void *offset) static inline void __record_iostat_latency(struct f2fs_sb_info *sbi) { - int io, idx; - struct f2fs_iostat_latency iostat_lat[MAX_IO_TYPE][NR_PAGE_TYPE]; + struct f2fs_iostat_latency iostat_lat[MAX_LAT_TYPE]; struct iostat_lat_info *io_lat = sbi->iostat_io_lat; + unsigned int lat_type; unsigned long flags; spin_lock_irqsave(&sbi->iostat_lat_lock, flags); - for (idx = 0; idx < MAX_IO_TYPE; idx++) { - for (io = 0; io < NR_PAGE_TYPE; io++) { - iostat_lat[idx][io].peak_lat = - jiffies_to_msecs(io_lat->peak_lat[idx][io]); - iostat_lat[idx][io].cnt = io_lat->bio_cnt[idx][io]; - iostat_lat[idx][io].avg_lat = iostat_lat[idx][io].cnt ? - jiffies_to_msecs(io_lat->sum_lat[idx][io]) / iostat_lat[idx][io].cnt : 0; - io_lat->sum_lat[idx][io] = 0; - io_lat->peak_lat[idx][io] = 0; - io_lat->bio_cnt[idx][io] = 0; - } + for (lat_type = 0; lat_type < MAX_LAT_TYPE; lat_type++) { + iostat_lat[lat_type].peak_lat = + jiffies_to_msecs(io_lat->peak_lat[lat_type]); + iostat_lat[lat_type].cnt = io_lat->bio_cnt[lat_type]; + iostat_lat[lat_type].avg_lat = iostat_lat[lat_type].cnt ? + jiffies_to_msecs(io_lat->sum_lat[lat_type]) / iostat_lat[lat_type].cnt : 0; + io_lat->sum_lat[lat_type] = 0; + io_lat->peak_lat[lat_type] = 0; + io_lat->bio_cnt[lat_type] = 0; } spin_unlock_irqrestore(&sbi->iostat_lat_lock, flags); @@ -208,62 +206,75 @@ void f2fs_update_iostat(struct f2fs_sb_info *sbi, struct inode *inode, f2fs_record_iostat(sbi); } -static inline void __update_iostat_latency(struct bio_iostat_ctx *iostat_ctx, - enum iostat_lat_type lat_type) +static inline void __update_iostat_latency(struct bio_iostat_ctx *iostat_ctx) { - unsigned long ts_diff; - unsigned int page_type = iostat_ctx->type; struct f2fs_sb_info *sbi = iostat_ctx->sbi; struct iostat_lat_info *io_lat = sbi->iostat_io_lat; + unsigned int lat_type = iostat_ctx->lat_type; + unsigned long ts_diff; unsigned long flags; if (!sbi->iostat_enable) return; - ts_diff = jiffies - iostat_ctx->submit_ts; - if (page_type == META_FLUSH) { - page_type = META; - } else if (page_type >= NR_PAGE_TYPE) { - f2fs_warn(sbi, "%s: %d over NR_PAGE_TYPE", __func__, page_type); + if (lat_type >= MAX_LAT_TYPE) { + f2fs_warn(sbi, "%s: %d over MAX_LAT_TYPE", __func__, lat_type); return; } + ts_diff = jiffies - iostat_ctx->submit_ts; spin_lock_irqsave(&sbi->iostat_lat_lock, flags); - io_lat->sum_lat[lat_type][page_type] += ts_diff; - io_lat->bio_cnt[lat_type][page_type]++; - if (ts_diff > io_lat->peak_lat[lat_type][page_type]) - io_lat->peak_lat[lat_type][page_type] = ts_diff; + io_lat->sum_lat[lat_type] += ts_diff; + io_lat->bio_cnt[lat_type]++; + if (ts_diff > io_lat->peak_lat[lat_type]) + io_lat->peak_lat[lat_type] = ts_diff; spin_unlock_irqrestore(&sbi->iostat_lat_lock, flags); } void iostat_update_and_unbind_ctx(struct bio *bio) +{ + struct bio_iostat_ctx *iostat_ctx = bio->bi_private; + + if (op_is_write(bio_op(bio)) && !op_is_discard(bio_op(bio))) + bio->bi_private = iostat_ctx->sbi; + else + bio->bi_private = iostat_ctx->iostat_private; + + __update_iostat_latency(iostat_ctx); + mempool_free(iostat_ctx, bio_iostat_ctx_pool); +} + +void iostat_update_submit_ctx(struct bio *bio, enum page_type type) { struct bio_iostat_ctx *iostat_ctx = bio->bi_private; enum iostat_lat_type lat_type; - if (op_is_write(bio_op(bio))) { + iostat_ctx->submit_ts = jiffies; + + if (type == DISCARD) { + lat_type = DISCARD_LAT; + } else if (op_is_write(bio_op(bio))) { lat_type = bio->bi_opf & REQ_SYNC ? - WRITE_SYNC_IO : WRITE_ASYNC_IO; - bio->bi_private = iostat_ctx->sbi; + WRITE_SYNC_DATA_LAT : WRITE_ASYNC_DATA_LAT; + lat_type += type; } else { - lat_type = READ_IO; - bio->bi_private = iostat_ctx->post_read_ctx; + lat_type = READ_DATA_LAT; + lat_type += type; } - __update_iostat_latency(iostat_ctx, lat_type); - mempool_free(iostat_ctx, bio_iostat_ctx_pool); + iostat_ctx->lat_type = lat_type; } void iostat_alloc_and_bind_ctx(struct f2fs_sb_info *sbi, - struct bio *bio, struct bio_post_read_ctx *ctx) + struct bio *bio, void *private) { struct bio_iostat_ctx *iostat_ctx; /* Due to the mempool, this never fails. */ iostat_ctx = mempool_alloc(bio_iostat_ctx_pool, GFP_NOFS); iostat_ctx->sbi = sbi; iostat_ctx->submit_ts = 0; - iostat_ctx->type = 0; - iostat_ctx->post_read_ctx = ctx; + iostat_ctx->lat_type = 0; + iostat_ctx->iostat_private = private; bio->bi_private = iostat_ctx; } diff --git a/fs/f2fs/iostat.h b/fs/f2fs/iostat.h index eb99d05cf272..824d5a23bc19 100644 --- a/fs/f2fs/iostat.h +++ b/fs/f2fs/iostat.h @@ -6,17 +6,24 @@ #ifndef __F2FS_IOSTAT_H__ #define __F2FS_IOSTAT_H__ +#ifdef CONFIG_F2FS_IOSTAT + struct bio_post_read_ctx; enum iostat_lat_type { - READ_IO = 0, - WRITE_SYNC_IO, - WRITE_ASYNC_IO, - MAX_IO_TYPE, + READ_DATA_LAT = 0, + READ_NODE_LAT, + READ_META_LAT, + WRITE_SYNC_DATA_LAT, + WRITE_SYNC_NODE_LAT, + WRITE_SYNC_META_LAT, + WRITE_ASYNC_DATA_LAT, + WRITE_ASYNC_NODE_LAT, + WRITE_ASYNC_META_LAT, + DISCARD_LAT, + MAX_LAT_TYPE, }; -#ifdef CONFIG_F2FS_IOSTAT - #define NUM_PREALLOC_IOSTAT_CTXS 128 #define DEFAULT_IOSTAT_PERIOD_MS 3000 #define MIN_IOSTAT_PERIOD_MS 100 @@ -24,9 +31,9 @@ enum iostat_lat_type { #define MAX_IOSTAT_PERIOD_MS 8640000 struct iostat_lat_info { - unsigned long sum_lat[MAX_IO_TYPE][NR_PAGE_TYPE]; /* sum of io latencies */ - unsigned long peak_lat[MAX_IO_TYPE][NR_PAGE_TYPE]; /* peak io latency */ - unsigned int bio_cnt[MAX_IO_TYPE][NR_PAGE_TYPE]; /* bio count */ + unsigned long sum_lat[MAX_LAT_TYPE]; /* sum of io latencies */ + unsigned long peak_lat[MAX_LAT_TYPE]; /* peak io latency */ + unsigned int bio_cnt[MAX_LAT_TYPE]; /* bio count */ }; extern int __maybe_unused iostat_info_seq_show(struct seq_file *seq, @@ -38,29 +45,21 @@ extern void f2fs_update_iostat(struct f2fs_sb_info *sbi, struct inode *inode, struct bio_iostat_ctx { struct f2fs_sb_info *sbi; unsigned long submit_ts; - enum page_type type; - struct bio_post_read_ctx *post_read_ctx; + enum iostat_lat_type lat_type; + void *iostat_private; }; -static inline void iostat_update_submit_ctx(struct bio *bio, - enum page_type type) -{ - struct bio_iostat_ctx *iostat_ctx = bio->bi_private; - - iostat_ctx->submit_ts = jiffies; - iostat_ctx->type = type; -} - -static inline struct bio_post_read_ctx *get_post_read_ctx(struct bio *bio) +static inline struct bio_post_read_ctx *get_bio_iostat_private(struct bio *bio) { struct bio_iostat_ctx *iostat_ctx = bio->bi_private; - return iostat_ctx->post_read_ctx; + return iostat_ctx->iostat_private; } +extern void iostat_update_submit_ctx(struct bio *bio, enum page_type type); extern void iostat_update_and_unbind_ctx(struct bio *bio); extern void iostat_alloc_and_bind_ctx(struct f2fs_sb_info *sbi, - struct bio *bio, struct bio_post_read_ctx *ctx); + struct bio *bio, void *private); extern int f2fs_init_iostat_processing(void); extern void f2fs_destroy_iostat_processing(void); extern int f2fs_init_iostat(struct f2fs_sb_info *sbi); @@ -70,10 +69,10 @@ static inline void f2fs_update_iostat(struct f2fs_sb_info *sbi, struct inode *in enum iostat_type type, unsigned long long io_bytes) {} static inline void iostat_update_and_unbind_ctx(struct bio *bio) {} static inline void iostat_alloc_and_bind_ctx(struct f2fs_sb_info *sbi, - struct bio *bio, struct bio_post_read_ctx *ctx) {} + struct bio *bio, void *private) {} static inline void iostat_update_submit_ctx(struct bio *bio, enum page_type type) {} -static inline struct bio_post_read_ctx *get_post_read_ctx(struct bio *bio) +static inline struct bio_post_read_ctx *get_bio_iostat_private(struct bio *bio) { return bio->bi_private; } diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 227e25836173..9a6c45a62e8b 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -1012,9 +1012,12 @@ static void __remove_discard_cmd(struct f2fs_sb_info *sbi, static void f2fs_submit_discard_endio(struct bio *bio) { - struct discard_cmd *dc = (struct discard_cmd *)bio->bi_private; + struct discard_cmd *dc; unsigned long flags; + iostat_update_and_unbind_ctx(bio); + dc = bio->bi_private; + spin_lock_irqsave(&dc->lock, flags); if (!dc->error) dc->error = blk_status_to_errno(bio->bi_status); @@ -1188,6 +1191,9 @@ static int __submit_discard_cmd(struct f2fs_sb_info *sbi, bio->bi_private = dc; bio->bi_end_io = f2fs_submit_discard_endio; bio->bi_opf |= flag; + + iostat_alloc_and_bind_ctx(sbi, bio, dc); + iostat_update_submit_ctx(bio, DISCARD); submit_bio(bio); atomic_inc(&dcc->issued_discard); diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h index 1322d34a5dfc..a0b115cf505c 100644 --- a/include/trace/events/f2fs.h +++ b/include/trace/events/f2fs.h @@ -2045,7 +2045,7 @@ struct f2fs_iostat_latency { TRACE_EVENT(f2fs_iostat_latency, - TP_PROTO(struct f2fs_sb_info *sbi, struct f2fs_iostat_latency (*iostat_lat)[NR_PAGE_TYPE]), + TP_PROTO(struct f2fs_sb_info *sbi, struct f2fs_iostat_latency *iostat_lat), TP_ARGS(sbi, iostat_lat), @@ -2078,37 +2078,43 @@ TRACE_EVENT(f2fs_iostat_latency, __field(unsigned int, m_wr_as_peak) __field(unsigned int, m_wr_as_avg) __field(unsigned int, m_wr_as_cnt) + __field(unsigned int, discard_peak) + __field(unsigned int, discard_avg) + __field(unsigned int, discard_cnt) ), TP_fast_assign( __entry->dev = sbi->sb->s_dev; - __entry->d_rd_peak = iostat_lat[READ_IO][DATA].peak_lat; - __entry->d_rd_avg = iostat_lat[READ_IO][DATA].avg_lat; - __entry->d_rd_cnt = iostat_lat[READ_IO][DATA].cnt; - __entry->n_rd_peak = iostat_lat[READ_IO][NODE].peak_lat; - __entry->n_rd_avg = iostat_lat[READ_IO][NODE].avg_lat; - __entry->n_rd_cnt = iostat_lat[READ_IO][NODE].cnt; - __entry->m_rd_peak = iostat_lat[READ_IO][META].peak_lat; - __entry->m_rd_avg = iostat_lat[READ_IO][META].avg_lat; - __entry->m_rd_cnt = iostat_lat[READ_IO][META].cnt; - __entry->d_wr_s_peak = iostat_lat[WRITE_SYNC_IO][DATA].peak_lat; - __entry->d_wr_s_avg = iostat_lat[WRITE_SYNC_IO][DATA].avg_lat; - __entry->d_wr_s_cnt = iostat_lat[WRITE_SYNC_IO][DATA].cnt; - __entry->n_wr_s_peak = iostat_lat[WRITE_SYNC_IO][NODE].peak_lat; - __entry->n_wr_s_avg = iostat_lat[WRITE_SYNC_IO][NODE].avg_lat; - __entry->n_wr_s_cnt = iostat_lat[WRITE_SYNC_IO][NODE].cnt; - __entry->m_wr_s_peak = iostat_lat[WRITE_SYNC_IO][META].peak_lat; - __entry->m_wr_s_avg = iostat_lat[WRITE_SYNC_IO][META].avg_lat; - __entry->m_wr_s_cnt = iostat_lat[WRITE_SYNC_IO][META].cnt; - __entry->d_wr_as_peak = iostat_lat[WRITE_ASYNC_IO][DATA].peak_lat; - __entry->d_wr_as_avg = iostat_lat[WRITE_ASYNC_IO][DATA].avg_lat; - __entry->d_wr_as_cnt = iostat_lat[WRITE_ASYNC_IO][DATA].cnt; - __entry->n_wr_as_peak = iostat_lat[WRITE_ASYNC_IO][NODE].peak_lat; - __entry->n_wr_as_avg = iostat_lat[WRITE_ASYNC_IO][NODE].avg_lat; - __entry->n_wr_as_cnt = iostat_lat[WRITE_ASYNC_IO][NODE].cnt; - __entry->m_wr_as_peak = iostat_lat[WRITE_ASYNC_IO][META].peak_lat; - __entry->m_wr_as_avg = iostat_lat[WRITE_ASYNC_IO][META].avg_lat; - __entry->m_wr_as_cnt = iostat_lat[WRITE_ASYNC_IO][META].cnt; + __entry->d_rd_peak = iostat_lat[READ_DATA_LAT].peak_lat; + __entry->d_rd_avg = iostat_lat[READ_DATA_LAT].avg_lat; + __entry->d_rd_cnt = iostat_lat[READ_DATA_LAT].cnt; + __entry->n_rd_peak = iostat_lat[READ_NODE_LAT].peak_lat; + __entry->n_rd_avg = iostat_lat[READ_NODE_LAT].avg_lat; + __entry->n_rd_cnt = iostat_lat[READ_NODE_LAT].cnt; + __entry->m_rd_peak = iostat_lat[READ_META_LAT].peak_lat; + __entry->m_rd_avg = iostat_lat[READ_META_LAT].avg_lat; + __entry->m_rd_cnt = iostat_lat[READ_META_LAT].cnt; + __entry->d_wr_s_peak = iostat_lat[WRITE_SYNC_DATA_LAT].peak_lat; + __entry->d_wr_s_avg = iostat_lat[WRITE_SYNC_DATA_LAT].avg_lat; + __entry->d_wr_s_cnt = iostat_lat[WRITE_SYNC_DATA_LAT].cnt; + __entry->n_wr_s_peak = iostat_lat[WRITE_SYNC_NODE_LAT].peak_lat; + __entry->n_wr_s_avg = iostat_lat[WRITE_SYNC_NODE_LAT].avg_lat; + __entry->n_wr_s_cnt = iostat_lat[WRITE_SYNC_NODE_LAT].cnt; + __entry->m_wr_s_peak = iostat_lat[WRITE_SYNC_META_LAT].peak_lat; + __entry->m_wr_s_avg = iostat_lat[WRITE_SYNC_META_LAT].avg_lat; + __entry->m_wr_s_cnt = iostat_lat[WRITE_SYNC_META_LAT].cnt; + __entry->d_wr_as_peak = iostat_lat[WRITE_ASYNC_DATA_LAT].peak_lat; + __entry->d_wr_as_avg = iostat_lat[WRITE_ASYNC_DATA_LAT].avg_lat; + __entry->d_wr_as_cnt = iostat_lat[WRITE_ASYNC_DATA_LAT].cnt; + __entry->n_wr_as_peak = iostat_lat[WRITE_ASYNC_NODE_LAT].peak_lat; + __entry->n_wr_as_avg = iostat_lat[WRITE_ASYNC_NODE_LAT].avg_lat; + __entry->n_wr_as_cnt = iostat_lat[WRITE_ASYNC_NODE_LAT].cnt; + __entry->m_wr_as_peak = iostat_lat[WRITE_ASYNC_META_LAT].peak_lat; + __entry->m_wr_as_avg = iostat_lat[WRITE_ASYNC_META_LAT].avg_lat; + __entry->m_wr_as_cnt = iostat_lat[WRITE_ASYNC_META_LAT].cnt; + __entry->discard_peak = iostat_lat[DISCARD_LAT].peak_lat; + __entry->discard_avg = iostat_lat[DISCARD_LAT].avg_lat; + __entry->discard_cnt = iostat_lat[DISCARD_LAT].cnt; ), TP_printk("dev = (%d,%d), " @@ -2116,7 +2122,8 @@ TRACE_EVENT(f2fs_iostat_latency, "rd_data [%u/%u/%u], rd_node [%u/%u/%u], rd_meta [%u/%u/%u], " "wr_sync_data [%u/%u/%u], wr_sync_node [%u/%u/%u], " "wr_sync_meta [%u/%u/%u], wr_async_data [%u/%u/%u], " - "wr_async_node [%u/%u/%u], wr_async_meta [%u/%u/%u]", + "wr_async_node [%u/%u/%u], wr_async_meta [%u/%u/%u], " + "discard [%u/%u/%u]", show_dev(__entry->dev), __entry->d_rd_peak, __entry->d_rd_avg, __entry->d_rd_cnt, __entry->n_rd_peak, __entry->n_rd_avg, __entry->n_rd_cnt, @@ -2126,7 +2133,8 @@ TRACE_EVENT(f2fs_iostat_latency, __entry->m_wr_s_peak, __entry->m_wr_s_avg, __entry->m_wr_s_cnt, __entry->d_wr_as_peak, __entry->d_wr_as_avg, __entry->d_wr_as_cnt, __entry->n_wr_as_peak, __entry->n_wr_as_avg, __entry->n_wr_as_cnt, - __entry->m_wr_as_peak, __entry->m_wr_as_avg, __entry->m_wr_as_cnt) + __entry->m_wr_as_peak, __entry->m_wr_as_avg, __entry->m_wr_as_cnt, + __entry->discard_peak, __entry->discard_avg, __entry->discard_cnt) ); #endif -- 2.25.1
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