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| author | Jens Axboe <axboe@kernel.dk> | 2018-10-25 08:58:14 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-11-07 13:44:59 -0700 |
| commit | a783b81820fe3532809c98371ec904dfdb0ea9e5 (patch) | |
| tree | 63ccf6f6fa444de9115e0bf35f08b4eccff0854b | |
| parent | f31967f0e455d08d3ea1d2f849bf62dafc92dbf4 (diff) | |
| download | lwn-a783b81820fe3532809c98371ec904dfdb0ea9e5.tar.gz lwn-a783b81820fe3532809c98371ec904dfdb0ea9e5.zip | |
blk-mq: add 'type' attribute to the sysfs hctx directory
It can be useful for a user to verify what type a given hardware
queue is, expose this information in sysfs.
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | block/blk-mq-sysfs.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/block/blk-mq-sysfs.c b/block/blk-mq-sysfs.c index aafb44224c89..2d737f9e7ba7 100644 --- a/block/blk-mq-sysfs.c +++ b/block/blk-mq-sysfs.c @@ -161,6 +161,11 @@ static ssize_t blk_mq_hw_sysfs_cpus_show(struct blk_mq_hw_ctx *hctx, char *page) return ret; } +static ssize_t blk_mq_hw_sysfs_type_show(struct blk_mq_hw_ctx *hctx, char *page) +{ + return sprintf(page, "%u\n", hctx->type); +} + static struct attribute *default_ctx_attrs[] = { NULL, }; @@ -177,11 +182,16 @@ static struct blk_mq_hw_ctx_sysfs_entry blk_mq_hw_sysfs_cpus = { .attr = {.name = "cpu_list", .mode = 0444 }, .show = blk_mq_hw_sysfs_cpus_show, }; +static struct blk_mq_hw_ctx_sysfs_entry blk_mq_hw_sysfs_type = { + .attr = {.name = "type", .mode = 0444 }, + .show = blk_mq_hw_sysfs_type_show, +}; static struct attribute *default_hw_ctx_attrs[] = { &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_type.attr, NULL, }; |