examples/service_cores: fix lcore count check

The example has various profiles to run services on specified
number of lcores. Due to incorrect boundary condition, service
can be dispatched to a core that does not exist. This puts main
core into endless wait.

Max available number of service cores is all detected lcores
excluding main core.

Fixes: 7f6ee6aee717 ("examples/service_cores: check cores before run")
Cc: stable@dpdk.org
Signed-off-by: Ruifeng Wang <ruifeng.wang@arm.com>
Acked-by: Harry van Haaren <harry.van.haaren@intel.com>

diff --git a/examples/service_cores/main.c b/examples/service_cores/main.c
index 83915b9..9f52082 100644 (file)
--- a/examples/service_cores/main.c
+++ b/examples/service_cores/main.c
@@ -118,7 +118,7 @@ apply_profile(int profile_id)
        struct profile *p = &profiles[profile_id];
        const uint8_t core_off = 1;
 
-       if (p->num_cores > rte_lcore_count() + 1) {
+       if (p->num_cores > rte_lcore_count() - 1) {
                printf("insufficent cores to run (%s)",
                        p->name);
                return;