[dpdk-dev] [PATCH v2] sched: add neon optimizations
Ashwin Sekhar T K
ashwin.sekhar at caviumnetworks.com
Fri Apr 28 08:15:48 CEST 2017
* Removed setting CONFIG_RTE_SCHED_VECTOR=n from armv8a config
so that the setting from common_base is taken as the default
setting for armv8a
* Verified the changes with sched_autotest unit test case
Signed-off-by: Ashwin Sekhar T K <ashwin.sekhar at caviumnetworks.com>
---
v2:
* Removed line CONFIG_RTE_SCHED_VECTOR=n from config/defconfig_arm64-armv8a-linuxapp-gcc
* Modified the commit message and body to reflect the changes
config/defconfig_arm64-armv8a-linuxapp-gcc | 2 --
lib/librte_sched/rte_sched.c | 22 ++++++++++++++++++++++
2 files changed, 22 insertions(+), 2 deletions(-)
diff --git a/config/defconfig_arm64-armv8a-linuxapp-gcc b/config/defconfig_arm64-armv8a-linuxapp-gcc
index 65888ce..6415f46 100644
--- a/config/defconfig_arm64-armv8a-linuxapp-gcc
+++ b/config/defconfig_arm64-armv8a-linuxapp-gcc
@@ -47,5 +47,3 @@ CONFIG_RTE_EAL_IGB_UIO=n
CONFIG_RTE_LIBRTE_FM10K_PMD=n
CONFIG_RTE_LIBRTE_SFC_EFX_PMD=n
CONFIG_RTE_LIBRTE_AVP_PMD=n
-
-CONFIG_RTE_SCHED_VECTOR=n
diff --git a/lib/librte_sched/rte_sched.c b/lib/librte_sched/rte_sched.c
index 614705d..4ba476a 100644
--- a/lib/librte_sched/rte_sched.c
+++ b/lib/librte_sched/rte_sched.c
@@ -58,6 +58,8 @@
#if defined(__SSE4__)
#define SCHED_VECTOR_SSE4
+#elif defined(RTE_MACHINE_CPUFLAG_NEON)
+#define SCHED_VECTOR_NEON
#endif
#endif
@@ -1732,6 +1734,26 @@ grinder_pipe_exists(struct rte_sched_port *port, uint32_t base_pipe)
return 1;
}
+#elif defined(SCHED_VECTOR_NEON)
+
+static inline int
+grinder_pipe_exists(struct rte_sched_port *port, uint32_t base_pipe)
+{
+ uint32x4_t index, pipes;
+ uint32_t *pos = (uint32_t *)port->grinder_base_bmp_pos;
+
+ index = vmovq_n_u32(base_pipe);
+ pipes = vld1q_u32(pos);
+ if (!vminvq_u32(veorq_u32(pipes, index)))
+ return 1;
+
+ pipes = vld1q_u32(pos + 4);
+ if (!vminvq_u32(veorq_u32(pipes, index)))
+ return 1;
+
+ return 0;
+}
+
#else
static inline int
--
2.7.4
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