[dpdk-dev] [PATCH] service: fix number mapped cores count

Pavan Nikhilesh pbhagavatula at caviumnetworks.com
Tue Jan 9 10:40:41 CET 2018


When adding service the number of mapped cores should only be incremented
when the core is not already a service core or vice versa.

Fixes: 21698354c832 ("service: introduce service cores concept")
Cc: stable at dpdk.org

Signed-off-by: Pavan Nikhilesh <pbhagavatula at caviumnetworks.com>
---
 lib/librte_eal/common/rte_service.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/lib/librte_eal/common/rte_service.c b/lib/librte_eal/common/rte_service.c
index 2d12d0201..d9138b677 100644
--- a/lib/librte_eal/common/rte_service.c
+++ b/lib/librte_eal/common/rte_service.c
@@ -545,10 +545,14 @@ service_update(struct rte_service_spec *service, uint32_t lcore,
 
 	uint64_t sid_mask = UINT64_C(1) << sid;
 	if (set) {
-		if (*set) {
+		uint64_t lcore_mapped = lcore_states[lcore].service_mask &
+			sid_mask;
+
+		if (*set && !lcore_mapped) {
 			lcore_states[lcore].service_mask |= sid_mask;
 			rte_atomic32_inc(&rte_services[sid].num_mapped_cores);
-		} else {
+		}
+		if (!*set && lcore_mapped) {
 			lcore_states[lcore].service_mask &= ~(sid_mask);
 			rte_atomic32_dec(&rte_services[sid].num_mapped_cores);
 		}
-- 
2.14.1



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