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| author | Christoph Hellwig <hch@lst.de> | 2018-12-02 17:46:16 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-12-04 11:38:17 -0700 |
| commit | e20ba6e1da029136ded295f33076483d65ddf50a (patch) | |
| tree | 1b3224a2418d4cd2657e6b2ebcde6f3b32a2ddf5 /block/blk-mq-sysfs.c | |
| parent | 154989e45fd8de9bfb52bbd6e5ea763e437e54c5 (diff) | |
| download | linux-stable-e20ba6e1da029136ded295f33076483d65ddf50a.tar.gz linux-stable-e20ba6e1da029136ded295f33076483d65ddf50a.tar.bz2 linux-stable-e20ba6e1da029136ded295f33076483d65ddf50a.zip | |
block: move queues types to the block layer
Having another indirect all in the fast path doesn't really help
in our post-spectre world. Also having too many queue type is just
going to create confusion, so I'd rather manage them centrally.
Note that the queue type naming and ordering changes a bit - the
first index now is the default queue for everything not explicitly
marked, the optional ones are read and poll queues.
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-mq-sysfs.c')
| -rw-r--r-- | block/blk-mq-sysfs.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/block/blk-mq-sysfs.c b/block/blk-mq-sysfs.c index 6efef1f679f0..9c2df137256a 100644 --- a/block/blk-mq-sysfs.c +++ b/block/blk-mq-sysfs.c @@ -173,9 +173,16 @@ static ssize_t blk_mq_hw_sysfs_cpus_show(struct blk_mq_hw_ctx *hctx, char *page) return ret; } +static const char *const hctx_types[] = { + [HCTX_TYPE_DEFAULT] = "default", + [HCTX_TYPE_READ] = "read", + [HCTX_TYPE_POLL] = "poll", +}; + static ssize_t blk_mq_hw_sysfs_type_show(struct blk_mq_hw_ctx *hctx, char *page) { - return sprintf(page, "%u\n", hctx->type); + BUILD_BUG_ON(ARRAY_SIZE(hctx_types) != HCTX_MAX_TYPES); + return sprintf(page, "%s\n", hctx_types[hctx->type]); } static struct attribute *default_ctx_attrs[] = { |