On Tue, Mar 05, 2019 at 06:03:14PM +0000, Vakul Garg wrote: > Instead of reading job ring's occupancy registers for every req/rsp > enqueued/dequeued respectively, we read these registers once and store > them in memory. After completing a job enqueue/dequeue, we decrement > these values. When these values become zero, we refresh the snapshot of > job ring's occupancy registers. This eliminates need of expensive device > register read operations for every job enqueued and dequeued and hence > makes caam_jr_enqueue() and caam_jr_dequeue() faster. The performance of > kernel ipsec improved by about 6% on ls1028 (for frame size 408 bytes). > > Signed-off-by: Vakul Garg <vakul.garg@xxxxxxx> > --- > > Changes since v2: > - Added magnitude of performance improvement in commit log. > > drivers/crypto/caam/intern.h | 1 + > drivers/crypto/caam/jr.c | 12 ++++++++++-- > 2 files changed, 11 insertions(+), 2 deletions(-) Patch applied. Thanks. -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
