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authorJens Axboe <axboe@fb.com>2015-11-05 20:44:55 +0300
committerJens Axboe <axboe@fb.com>2015-11-07 20:40:47 +0300
commit05229beeddf7e75e2e616ddaad4b70e7fca9528d (patch)
tree2f8c5efffcdba6f6fd113960da9009979cf679e4 /net
parent7b371636fb6d187873d9d2730c2b1febc48a9b47 (diff)
downloadlinux-05229beeddf7e75e2e616ddaad4b70e7fca9528d.tar.xz
block: add block polling support
Add basic support for polling for specific IO to complete. This uses the cookie that blk-mq passes back, which enables the block layer to pass this cookie to the driver to spin for a specific request. This will be combined with request latency tracking, so we can make qualified decisions about when to poll and when not to. For now, for benchmark purposes, we add a sysfs file that controls whether polling is enabled or not. Signed-off-by: Jens Axboe <axboe@fb.com> Acked-by: Christoph Hellwig <hch@lst.de> Acked-by: Keith Busch <keith.busch@intel.com>
Diffstat (limited to 'net')
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