projects / platform / kernel / linux-starfive.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: 2d3c627) | patch
NVMe: Avoid shift operation when writing cq head doorbell
authorHaiyan Hu <huhaiyan@huawei.com>
Tue, 10 Sep 2013 03:25:37 +0000 (11:25 +0800)
committerMatthew Wilcox <matthew.r.wilcox@intel.com>
Mon, 18 Nov 2013 22:10:51 +0000 (17:10 -0500)
commitb80d5ccca3a012e91ca64a2a0b13049163a6a698
tree97d64d8d70ecc42f04ee52023c636d84c05e7a21tree | snapshot
parent2d3c627502f2a9b0a7de06a5a2df2365542a72c9commit | diff
NVMe: Avoid shift operation when writing cq head doorbell

Changes the type of dev->db_stride to unsigned and changes the value
stored there to be 1 << the current value. Then there is less
calculation to be done at completion time.

Signed-off-by: Haiyan Hu <huhaiyan@huawei.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
drivers/block/nvme-core.c diff | blob | history
include/linux/nvme.h diff | blob | history
Domain: System / Kernel;