[dpdk-dev] [PATCH v4 02/26] eal: return error instead of panic for cpu init

Aaron Conole aconole at redhat.com
Sat Feb 25 17:02:45 CET 2017


There may be no way to gracefully recover, but the application
should be notified that a failure happened, rather than completely
aborting.  This allows the user to proceed with a "slow-path" type
solution.

Signed-off-by: Aaron Conole <aconole at redhat.com>
---
 lib/librte_eal/linuxapp/eal/eal.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/lib/librte_eal/linuxapp/eal/eal.c b/lib/librte_eal/linuxapp/eal/eal.c
index bf6b818..5023d0d 100644
--- a/lib/librte_eal/linuxapp/eal/eal.c
+++ b/lib/librte_eal/linuxapp/eal/eal.c
@@ -740,6 +740,12 @@ static int rte_eal_vfio_setup(void)
 }
 #endif
 
+static void rte_eal_init_alert(const char *msg)
+{
+    fprintf(stderr, "EAL: FATAL: %s\n", msg);
+    RTE_LOG(ERR, EAL, "%s\n", msg);
+}
+
 /* Launch threads, called at application init(). */
 int
 rte_eal_init(int argc, char **argv)
@@ -767,8 +773,11 @@ rte_eal_init(int argc, char **argv)
 	/* set log level as early as possible */
 	rte_set_log_level(internal_config.log_level);
 
-	if (rte_eal_cpu_init() < 0)
-		rte_panic("Cannot detect lcores\n");
+	if (rte_eal_cpu_init() < 0) {
+		rte_eal_init_alert("Cannot detect lcores.");
+		rte_errno = ENOTSUP;
+		return -1;
+	}
 
 	fctret = eal_parse_args(argc, argv);
 	if (fctret < 0)
-- 
2.9.3



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