On Sun, Mar 25, 2018 at 9:41 PM, Yael Chemla <yael.chemla@xxxxxxxxxxxx> wrote: > Allow parallel processing of bio blocks by moving to async. completion > handling. This allows for better resource utilization of both HW and > software based hash tfm and therefore better performance in many cases, > depending on the specific tfm in use. > > Tested on ARM32 (zynq board) and ARM64 (Juno board). > Time of cat command was measured on a filesystem with various file sizes. > 12% performance improvement when HW based hash was used (ccree driver). > SW based hash showed less than 1% improvement. > CPU utilization when HW based hash was used presented 10% less context > switch, 4% less cycles and 7% less instructions. No difference in > CPU utilization noticed with SW based hash. > > Signed-off-by: Yael Chemla <yael.chemla@xxxxxxxxxxxx> > --- > drivers/md/dm-verity-fec.c | 10 +- > drivers/md/dm-verity-fec.h | 7 +- > drivers/md/dm-verity-target.c | 215 +++++++++++++++++++++++++++++++----------- > drivers/md/dm-verity.h | 4 +- > 4 files changed, 173 insertions(+), 63 deletions(-) Reviewed-by: Gilad Ben-Yossef <gilad@xxxxxxxxxxxxx> -- Gilad Ben-Yossef Chief Coffee Drinker "If you take a class in large-scale robotics, can you end up in a situation where the homework eats your dog?" -- Jean-Baptiste Queru -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
