From 9cdbd44ea94020f1b28b1407b73f2a34bc424a4f Mon Sep 17 00:00:00 2001 From: Pavan Nikhilesh Date: Tue, 29 Aug 2017 18:02:51 +0530 Subject: [PATCH] service: add count per lcore This new API returns the number of services that are running on a specific service core. It allows an application to decide which service core to run a new service on. Signed-off-by: Pavan Nikhilesh Acked-by: Harry van Haaren --- lib/librte_eal/bsdapp/eal/rte_eal_version.map | 1 + lib/librte_eal/common/include/rte_service.h | 13 +++++++++++++ lib/librte_eal/common/rte_service.c | 13 +++++++++++++ lib/librte_eal/linuxapp/eal/rte_eal_version.map | 1 + 4 files changed, 28 insertions(+) diff --git a/lib/librte_eal/bsdapp/eal/rte_eal_version.map b/lib/librte_eal/bsdapp/eal/rte_eal_version.map index aac6fd776c..79e7d3197e 100644 --- a/lib/librte_eal/bsdapp/eal/rte_eal_version.map +++ b/lib/librte_eal/bsdapp/eal/rte_eal_version.map @@ -222,6 +222,7 @@ EXPERIMENTAL { rte_service_is_running; rte_service_lcore_add; rte_service_lcore_count; + rte_service_lcore_count_services; rte_service_lcore_del; rte_service_lcore_list; rte_service_lcore_reset_all; diff --git a/lib/librte_eal/common/include/rte_service.h b/lib/librte_eal/common/include/rte_service.h index 7c6f7383a0..5ea81c4f6c 100644 --- a/lib/librte_eal/common/include/rte_service.h +++ b/lib/librte_eal/common/include/rte_service.h @@ -370,6 +370,19 @@ int32_t rte_service_set_stats_enable(struct rte_service_spec *service, */ int32_t rte_service_lcore_list(uint32_t array[], uint32_t n); +/** + * @warning + * @b EXPERIMENTAL: this API may change without prior notice + * + * Get the numer of services running on the supplied lcore. + * + * @param lcore Id of the service core. + * @retval >=0 Number of services registered to this core. + * @retval -EINVAL Invalid lcore provided + * @retval -ENOTSUP The provided lcore is not a service core. + */ +int32_t rte_service_lcore_count_services(uint32_t lcore); + /** * @warning * @b EXPERIMENTAL: this API may change without prior notice diff --git a/lib/librte_eal/common/rte_service.c b/lib/librte_eal/common/rte_service.c index 7efb76dc8e..616bad3a1d 100644 --- a/lib/librte_eal/common/rte_service.c +++ b/lib/librte_eal/common/rte_service.c @@ -396,6 +396,19 @@ rte_service_lcore_list(uint32_t array[], uint32_t n) return count; } +int32_t +rte_service_lcore_count_services(uint32_t lcore) +{ + if (lcore >= RTE_MAX_LCORE) + return -EINVAL; + + struct core_state *cs = &lcore_states[lcore]; + if (!cs->is_service_core) + return -ENOTSUP; + + return __builtin_popcountll(cs->service_mask); +} + int32_t rte_service_start_with_defaults(void) { diff --git a/lib/librte_eal/linuxapp/eal/rte_eal_version.map b/lib/librte_eal/linuxapp/eal/rte_eal_version.map index 3a8f15406a..468c706ab3 100644 --- a/lib/librte_eal/linuxapp/eal/rte_eal_version.map +++ b/lib/librte_eal/linuxapp/eal/rte_eal_version.map @@ -227,6 +227,7 @@ EXPERIMENTAL { rte_service_is_running; rte_service_lcore_add; rte_service_lcore_count; + rte_service_lcore_count_services; rte_service_lcore_del; rte_service_lcore_list; rte_service_lcore_reset_all; -- 2.20.1