[dpdk-dev] [PATCH v2 12/15] test/eal: check number of cores before running subtests

[David Marchand]

From: Michael Santana <msantana at redhat.com>

The eal flags unit test assumes that a certain number of cores are
available (4 and 8 cores), however this may not always be the case.
Individual developers may run the unit test on their local desktop
which typically have 2 to 4 cores, in said case the test is bound
to fail for lacking 4 or 8 cores.

Additionally, as we push forward introducing CI into DPDK we are limited
to the hardware specification of CI services (e.g. Travis CI) that only
have 2 cores on their servers, in which case the test would fail.

To fix this we check available cores before running a subtest. This
applies to subtests that are dedicated to test that the -l and --lcore
flags work correctly. If not enough cores are available the subtest is
simply skipped, otherwise the subtest is run.

Signed-off-by: Michael Santana <msantana at redhat.com>
Signed-off-by: David Marchand <david.marchand at redhat.com>
Acked-by: Aaron Conole <aconole at redhat.com>
---
 app/test/test_eal_flags.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/app/test/test_eal_flags.c b/app/test/test_eal_flags.c
index 5e11b9f..cfa8a61 100644
--- a/app/test/test_eal_flags.c
+++ b/app/test/test_eal_flags.c
@@ -19,7 +19,7 @@
 #include <limits.h>
 #include <fcntl.h>
 
-#include <rte_per_lcore.h>
+#include <rte_lcore.h>
 #include <rte_debug.h>
 #include <rte_string_fns.h>
 
@@ -560,7 +560,9 @@ enum hugepage_action {
 		       "process ran without error with invalid -l flag\n");
 		return -1;
 	}
-	if (launch_proc(argv15) != 0) {
+	if (rte_lcore_is_enabled(0) && rte_lcore_is_enabled(1) &&
+	    rte_lcore_is_enabled(2) && rte_lcore_is_enabled(3) &&
+	    launch_proc(argv15) != 0) {
 		printf("Error - "
 		       "process did not run ok with valid corelist value\n");
 		return -1;
@@ -579,7 +581,11 @@ enum hugepage_action {
 		return -1;
 	}
 
-	if (launch_proc(argv29) != 0) {
+	if (rte_lcore_is_enabled(0) && rte_lcore_is_enabled(1) &&
+	    rte_lcore_is_enabled(2) && rte_lcore_is_enabled(3) &&
+	    rte_lcore_is_enabled(3) && rte_lcore_is_enabled(5) &&
+	    rte_lcore_is_enabled(4) && rte_lcore_is_enabled(7) &&
+	    launch_proc(argv29) != 0) {
 		printf("Error - "
 		       "process did not run ok with valid corelist value\n");
 		return -1;
@@ -606,6 +612,9 @@ enum hugepage_action {
 	snprintf(prefix, sizeof(prefix), "--file-prefix=%s", tmp);
 #endif
 
+	if (!rte_lcore_is_enabled(0) || !rte_lcore_is_enabled(1))
+		return TEST_SKIPPED;
+
 	/* --master-lcore flag but no value */
 	const char *argv1[] = { prgname, prefix, mp_flag,
 				"-c", "3", "--master-lcore"};
-- 
1.8.3.1