[dpdk-dev] [PATCH 1/2] examples/vm_power_mgr: show warning when using systems with more than 64 cores

[Pablo de Lara <pablo.de.lara.guarch@intel.com>]

When using VM power manager app on systems with more than 64 cores,
app could not run even though user does not use cores 64 or higher.
The problem happens only in that case, in which case it will result
in an undefined behaviour.

Thefere, this patch allows the user to run the app on a system with more
than 64 cores, warning the user not to use cores higher than 64 in the VM(s).

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
---
 examples/vm_power_manager/channel_manager.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/examples/vm_power_manager/channel_manager.c b/examples/vm_power_manager/channel_manager.c
index 7d892e2..35ff40a 100644
--- a/examples/vm_power_manager/channel_manager.c
+++ b/examples/vm_power_manager/channel_manager.c
@@ -764,12 +764,11 @@ channel_manager_init(const char *path)
 	}
 	global_n_host_cpus = (unsigned)n_cpus;
 
-	if (global_n_host_cpus > CHANNEL_CMDS_MAX_CPUS) {
-		RTE_LOG(ERR, CHANNEL_MANAGER, "The number of host CPUs(%u) exceeds the "
-				"maximum of %u\n", global_n_host_cpus, CHANNEL_CMDS_MAX_CPUS);
-		goto error;
-
-	}
+	if (global_n_host_cpus > CHANNEL_CMDS_MAX_CPUS)
+		RTE_LOG(WARNING, CHANNEL_MANAGER, "The number of host CPUs(%u) exceeds the "
+				"maximum of %u. No cores over %u should be used.\n",
+				global_n_host_cpus, CHANNEL_CMDS_MAX_CPUS,
+				CHANNEL_CMDS_MAX_CPUS - 1);
 
 	return 0;
 error:
-- 
2.4.2