On 17.02.21 21:28, Mike Christie wrote:
This patch adds plug/unplug callouts for tcmu, so we can avoid the number of times we switch to userspace. Using this driver with tcm loop is a common config, and dependng on the nr_hw_queues (nr_hw_queues=1 performs much better) and fio jobs (lower num jobs around 4) this patch can increase IOPs by only around 5-10% because we hit other issues like the big per tcmu device mutex. Signed-off-by: Mike Christie <michael.christie@xxxxxxxxxx> --- drivers/target/target_core_user.c | 27 +++++++++++++++++++++++++-- 1 file changed, 25 insertions(+), 2 deletions(-)
Looks good. Reviewed-by: Bodo Stroesser <bostroesser@xxxxxxxxx>
