[RFC 1/3] test/meson: auto detect number of cores

[Aaron Conole <aconole@redhat.com>]

Some environments do not provide a minimum 4 cores for running tests.  This
allows those environments to still execute 'ninja test' without causing
multiple failures.

Signed-off-by: Aaron Conole <aconole@redhat.com>
---
 app/test/meson.build | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/app/test/meson.build b/app/test/meson.build
index ddb4d09ae..975b38daa 100644
--- a/app/test/meson.build
+++ b/app/test/meson.build
@@ -337,10 +337,15 @@ if get_option('tests')
 	timeout_seconds = 600
 	timeout_seconds_fast = 10
 
+	# Retreive the number of CPU cores
+	num_cores = run_command('lscpu', '-p=cpu').stdout().strip().split('\n')[-1]
+	num_cores_arg = '-l 0-' + num_cores
+
+	test_args = [num_cores_arg, '-n 4']
 	foreach arg : fast_parallel_test_names
 		test(arg, dpdk_test,
 			env : ['DPDK_TEST=' + arg],
-			args : ['-c f','-n 4', '--file-prefix=@0@'.format(arg)],
+			args : test_args + ['--file-prefix=@0@'.format(arg)],
 			timeout : timeout_seconds_fast,
 			suite : 'fast-tests')
 	endforeach
@@ -348,6 +353,7 @@ if get_option('tests')
 	foreach arg : fast_non_parallel_test_names
 		test(arg, dpdk_test,
 			env : ['DPDK_TEST=' + arg],
+			args : test_args + ['--file-prefix=@0@'.format(arg)],
 			timeout : timeout_seconds_fast,
 			is_parallel : false,
 			suite : 'fast-tests')
@@ -356,6 +362,7 @@ if get_option('tests')
 	foreach arg : perf_test_names
 		test(arg, dpdk_test,
 		env : ['DPDK_TEST=' + arg],
+		args : test_args + ['--file-prefix=@0@'.format(arg)],
 		timeout : timeout_seconds,
 		is_parallel : false,
 		suite : 'perf-tests')
@@ -364,6 +371,7 @@ if get_option('tests')
 	foreach arg : driver_test_names
 		test(arg, dpdk_test,
 			env : ['DPDK_TEST=' + arg],
+			args : test_args + ['--file-prefix=@0@'.format(arg)],
 			timeout : timeout_seconds,
 			is_parallel : false,
 			suite : 'driver-tests')
@@ -372,6 +380,7 @@ if get_option('tests')
 	foreach arg : dump_test_names
 		test(arg, dpdk_test,
 			env : ['DPDK_TEST=' + arg],
+			args : test_args + ['--file-prefix=@0@'.format(arg)],
 			timeout : timeout_seconds,
 			is_parallel : false,
 			suite : 'debug-tests')
-- 
2.19.1