diff options
| author | Omar Sandoval <osandov@fb.com> | 2017-01-25 17:06:46 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2017-01-27 16:17:44 +0100 |
| commit | d96b37c0af3e4f42928a1361d5cd9f4f8921b4a8 (patch) | |
| tree | c190352d85237bab561b905a1c16f0b4735ea9f7 /block/blk-mq-sysfs.c | |
| parent | blk-mq: export software queue pending map to debugfs (diff) | |
| download | linux-d96b37c0af3e4f42928a1361d5cd9f4f8921b4a8.tar.xz linux-d96b37c0af3e4f42928a1361d5cd9f4f8921b4a8.zip | |
blk-mq: move tags and sched_tags info from sysfs to debugfs
These are very tied to the blk-mq tag implementation, so exposing them
to sysfs isn't a great idea. Move the debugging information to debugfs
and add basic entries for the number of tags and the number of reserved
tags to sysfs.
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/blk-mq-sysfs.c')
| -rw-r--r-- | block/blk-mq-sysfs.c | 33 |
1 files changed, 16 insertions, 17 deletions
diff --git a/block/blk-mq-sysfs.c b/block/blk-mq-sysfs.c index ee3694d8c4ee..a0ae1f536ed0 100644 --- a/block/blk-mq-sysfs.c +++ b/block/blk-mq-sysfs.c @@ -184,17 +184,16 @@ static ssize_t blk_mq_hw_sysfs_dispatched_show(struct blk_mq_hw_ctx *hctx, return page - start_page; } -static ssize_t blk_mq_hw_sysfs_sched_tags_show(struct blk_mq_hw_ctx *hctx, char *page) +static ssize_t blk_mq_hw_sysfs_nr_tags_show(struct blk_mq_hw_ctx *hctx, + char *page) { - if (hctx->sched_tags) - return blk_mq_tag_sysfs_show(hctx->sched_tags, page); - - return 0; + return sprintf(page, "%u\n", hctx->tags->nr_tags); } -static ssize_t blk_mq_hw_sysfs_tags_show(struct blk_mq_hw_ctx *hctx, char *page) +static ssize_t blk_mq_hw_sysfs_nr_reserved_tags_show(struct blk_mq_hw_ctx *hctx, + char *page) { - return blk_mq_tag_sysfs_show(hctx->tags, page); + return sprintf(page, "%u\n", hctx->tags->nr_reserved_tags); } static ssize_t blk_mq_hw_sysfs_active_show(struct blk_mq_hw_ctx *hctx, char *page) @@ -293,18 +292,18 @@ static struct blk_mq_hw_ctx_sysfs_entry blk_mq_hw_sysfs_dispatched = { .attr = {.name = "dispatched", .mode = S_IRUGO }, .show = blk_mq_hw_sysfs_dispatched_show, }; +static struct blk_mq_hw_ctx_sysfs_entry blk_mq_hw_sysfs_nr_tags = { + .attr = {.name = "nr_tags", .mode = S_IRUGO }, + .show = blk_mq_hw_sysfs_nr_tags_show, +}; +static struct blk_mq_hw_ctx_sysfs_entry blk_mq_hw_sysfs_nr_reserved_tags = { + .attr = {.name = "nr_reserved_tags", .mode = S_IRUGO }, + .show = blk_mq_hw_sysfs_nr_reserved_tags_show, +}; static struct blk_mq_hw_ctx_sysfs_entry blk_mq_hw_sysfs_active = { .attr = {.name = "active", .mode = S_IRUGO }, .show = blk_mq_hw_sysfs_active_show, }; -static struct blk_mq_hw_ctx_sysfs_entry blk_mq_hw_sysfs_sched_tags = { - .attr = {.name = "sched_tags", .mode = S_IRUGO }, - .show = blk_mq_hw_sysfs_sched_tags_show, -}; -static struct blk_mq_hw_ctx_sysfs_entry blk_mq_hw_sysfs_tags = { - .attr = {.name = "tags", .mode = S_IRUGO }, - .show = blk_mq_hw_sysfs_tags_show, -}; static struct blk_mq_hw_ctx_sysfs_entry blk_mq_hw_sysfs_cpus = { .attr = {.name = "cpu_list", .mode = S_IRUGO }, .show = blk_mq_hw_sysfs_cpus_show, @@ -324,8 +323,8 @@ static struct attribute *default_hw_ctx_attrs[] = { &blk_mq_hw_sysfs_queued.attr, &blk_mq_hw_sysfs_run.attr, &blk_mq_hw_sysfs_dispatched.attr, - &blk_mq_hw_sysfs_tags.attr, - &blk_mq_hw_sysfs_sched_tags.attr, + &blk_mq_hw_sysfs_nr_tags.attr, + &blk_mq_hw_sysfs_nr_reserved_tags.attr, &blk_mq_hw_sysfs_cpus.attr, &blk_mq_hw_sysfs_active.attr, &blk_mq_hw_sysfs_poll.attr, |