| Message ID | 20220401035319.274260-1-yukuai3@huawei.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | blk-mq: add debugfs to print information for blk_mq_tag_set | expand |
friendly ping ... 在 2022/04/01 11:53, Yu Kuai 写道: > This should be helpful to solve some problems. > > Signed-off-by: Yu Kuai <yukuai3@huawei.com> > --- > block/blk-mq-debugfs.c | 54 ++++++++++++++++++++++++++++++++++++++---- > 1 file changed, 50 insertions(+), 4 deletions(-) > > diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c > index aa0349e9f083..3c6260df7a95 100644 > --- a/block/blk-mq-debugfs.c > +++ b/block/blk-mq-debugfs.c > @@ -183,12 +183,52 @@ static ssize_t queue_state_write(void *data, const char __user *buf, > return count; > } > > +static void __flags_show(unsigned long flags, struct seq_file *m); > + > +static int queue_tag_set_show(void *data, struct seq_file *m) > +{ > + struct request_queue *q = data; > + struct blk_mq_tag_set *set = q->tag_set; > + int i, j; > + > + seq_puts(m, "map:\n"); > + for (i = 0; i < set->nr_maps; ++i) { > + struct blk_mq_queue_map *map = &set->map[i]; > + > + if (!map) { > + seq_puts(m, " NULL\n"); > + continue; > + } > + > + seq_printf(m, " nr_queues %u offset %u map:", map->nr_queues, > + map->queue_offset); > + if (!map->mq_map) { > + seq_puts(m, " NULL\n"); > + continue; > + } > + for (j = 0; j < nr_cpu_ids; ++j) > + seq_printf(m, " %u", map->mq_map[j]); > + seq_puts(m, "\n"); > + } > + > + seq_printf(m, "nr_hw_queues: %u\n", set->nr_hw_queues); > + seq_printf(m, "queue_depth: %u\n", set->queue_depth); > + seq_printf(m, "reserved_tags: %u\n", set->reserved_tags); > + seq_printf(m, "cmd_size: %u\n", set->cmd_size); > + seq_printf(m, "numa_node: %d\n", set->numa_node); > + seq_printf(m, "timeout: %u\n", set->timeout); > + __flags_show(set->flags, m); > + > + return 0; > +} > + > static const struct blk_mq_debugfs_attr blk_mq_debugfs_queue_attrs[] = { > { "poll_stat", 0400, queue_poll_stat_show }, > { "requeue_list", 0400, .seq_ops = &queue_requeue_list_seq_ops }, > { "pm_only", 0600, queue_pm_only_show, NULL }, > { "state", 0600, queue_state_show, queue_state_write }, > { "zone_wlock", 0400, queue_zone_wlock_show, NULL }, > + { "tag_set", 0400, queue_tag_set_show, NULL }, > { }, > }; > > @@ -229,10 +269,9 @@ static const char *const hctx_flag_name[] = { > }; > #undef HCTX_FLAG_NAME > > -static int hctx_flags_show(void *data, struct seq_file *m) > +static void __flags_show(unsigned long flags, struct seq_file *m) > { > - struct blk_mq_hw_ctx *hctx = data; > - const int alloc_policy = BLK_MQ_FLAG_TO_ALLOC_POLICY(hctx->flags); > + const int alloc_policy = BLK_MQ_FLAG_TO_ALLOC_POLICY(flags); > > seq_puts(m, "alloc_policy="); > if (alloc_policy < ARRAY_SIZE(alloc_policy_name) && > @@ -242,9 +281,16 @@ static int hctx_flags_show(void *data, struct seq_file *m) > seq_printf(m, "%d", alloc_policy); > seq_puts(m, " "); > blk_flags_show(m, > - hctx->flags ^ BLK_ALLOC_POLICY_TO_MQ_FLAG(alloc_policy), > + flags ^ BLK_ALLOC_POLICY_TO_MQ_FLAG(alloc_policy), > hctx_flag_name, ARRAY_SIZE(hctx_flag_name)); > seq_puts(m, "\n"); > +} > + > +static int hctx_flags_show(void *data, struct seq_file *m) > +{ > + struct blk_mq_hw_ctx *hctx = data; > + > + __flags_show(hctx->flags, m); > return 0; > } > >
diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c index aa0349e9f083..3c6260df7a95 100644 --- a/block/blk-mq-debugfs.c +++ b/block/blk-mq-debugfs.c @@ -183,12 +183,52 @@ static ssize_t queue_state_write(void *data, const char __user *buf, return count; } +static void __flags_show(unsigned long flags, struct seq_file *m); + +static int queue_tag_set_show(void *data, struct seq_file *m) +{ + struct request_queue *q = data; + struct blk_mq_tag_set *set = q->tag_set; + int i, j; + + seq_puts(m, "map:\n"); + for (i = 0; i < set->nr_maps; ++i) { + struct blk_mq_queue_map *map = &set->map[i]; + + if (!map) { + seq_puts(m, " NULL\n"); + continue; + } + + seq_printf(m, " nr_queues %u offset %u map:", map->nr_queues, + map->queue_offset); + if (!map->mq_map) { + seq_puts(m, " NULL\n"); + continue; + } + for (j = 0; j < nr_cpu_ids; ++j) + seq_printf(m, " %u", map->mq_map[j]); + seq_puts(m, "\n"); + } + + seq_printf(m, "nr_hw_queues: %u\n", set->nr_hw_queues); + seq_printf(m, "queue_depth: %u\n", set->queue_depth); + seq_printf(m, "reserved_tags: %u\n", set->reserved_tags); + seq_printf(m, "cmd_size: %u\n", set->cmd_size); + seq_printf(m, "numa_node: %d\n", set->numa_node); + seq_printf(m, "timeout: %u\n", set->timeout); + __flags_show(set->flags, m); + + return 0; +} + static const struct blk_mq_debugfs_attr blk_mq_debugfs_queue_attrs[] = { { "poll_stat", 0400, queue_poll_stat_show }, { "requeue_list", 0400, .seq_ops = &queue_requeue_list_seq_ops }, { "pm_only", 0600, queue_pm_only_show, NULL }, { "state", 0600, queue_state_show, queue_state_write }, { "zone_wlock", 0400, queue_zone_wlock_show, NULL }, + { "tag_set", 0400, queue_tag_set_show, NULL }, { }, }; @@ -229,10 +269,9 @@ static const char *const hctx_flag_name[] = { }; #undef HCTX_FLAG_NAME -static int hctx_flags_show(void *data, struct seq_file *m) +static void __flags_show(unsigned long flags, struct seq_file *m) { - struct blk_mq_hw_ctx *hctx = data; - const int alloc_policy = BLK_MQ_FLAG_TO_ALLOC_POLICY(hctx->flags); + const int alloc_policy = BLK_MQ_FLAG_TO_ALLOC_POLICY(flags); seq_puts(m, "alloc_policy="); if (alloc_policy < ARRAY_SIZE(alloc_policy_name) && @@ -242,9 +281,16 @@ static int hctx_flags_show(void *data, struct seq_file *m) seq_printf(m, "%d", alloc_policy); seq_puts(m, " "); blk_flags_show(m, - hctx->flags ^ BLK_ALLOC_POLICY_TO_MQ_FLAG(alloc_policy), + flags ^ BLK_ALLOC_POLICY_TO_MQ_FLAG(alloc_policy), hctx_flag_name, ARRAY_SIZE(hctx_flag_name)); seq_puts(m, "\n"); +} + +static int hctx_flags_show(void *data, struct seq_file *m) +{ + struct blk_mq_hw_ctx *hctx = data; + + __flags_show(hctx->flags, m); return 0; }
This should be helpful to solve some problems. Signed-off-by: Yu Kuai <yukuai3@huawei.com> --- block/blk-mq-debugfs.c | 54 ++++++++++++++++++++++++++++++++++++++---- 1 file changed, 50 insertions(+), 4 deletions(-)