Gavin Hu 047adc1724 ring/c11: move atomic load of head above the loop ... In __rte_ring_move_prod_head, move the __atomic_load_n up and out of the do {} while loop as upon failure the old_head will be updated, another load is costly and not necessary. This helps a little on the latency,about 1~5%. Test result with the patch(two cores): SP/SC bulk enq/dequeue (size: 8): 5.64 MP/MC bulk enq/dequeue (size: 8): 9.58 SP/SC bulk enq/dequeue (size: 32): 1.98 MP/MC bulk enq/dequeue (size: 32): 2.30 Fixes: 39368ebfc6 ("ring: introduce C11 memory model barrier option") Cc: stable@dpdk.org Signed-off-by: Gavin Hu <gavin.hu@arm.com> Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com> Reviewed-by: Steve Capper <steve.capper@arm.com> Reviewed-by: Ola Liljedahl <ola.liljedahl@arm.com> Reviewed-by: Jia He <justin.he@arm.com> Acked-by: Jerin Jacob <jerin.jacob@caviumnetworks.com> Tested-by: Jerin Jacob <jerin.jacob@caviumnetworks.com> Acked-by: Olivier Matz <olivier.matz@6wind.com>		2018-11-05 14:34:27 +01:00
..
Makefile	ring: relax alignment constraint on ring structure	2018-04-18 00:24:22 +02:00
meson.build	ring: add library version to meson build	2018-10-25 14:30:05 +02:00
rte_ring_c11_mem.h	ring/c11: move atomic load of head above the loop	2018-11-05 14:34:27 +01:00
rte_ring_generic.h	ring: remove signed type flip-flopping	2018-05-21 00:20:16 +02:00
rte_ring_version.map	lib: remove unused map symbols	2018-02-13 14:55:01 +01:00
rte_ring.c	ring: convert license headers to SPDX tags	2018-02-01 01:46:45 +01:00
rte_ring.h	config: rename option for C11 memory model	2018-10-26 18:09:22 +02:00