[PATCH] app/test: enhance meson test run for FreeBSD and Linux

[Agalya Babu RadhaKrishnan <agalyax.babu.radhakrishnan@intel.com>]

From: Agalya Babu RadhaKrishnan <agalyax.babu.radhakrishnan@intel.com>

1)For linux, running all tests on same cores can increase failure rate.
So instead run each test case on separate lcore using -l EAL option.
Lcore for each test case will be selected in the incremental order
of 0,1,2 ... till it reaches the maximum available cores in the
system which can be known from 'nproc' command.
On the other hand, by default meson runs all tests in parallel in
different threads which can be controlled by MESON_TESTTHREAD option.
eg. MESON_TESTTHREAD=4 meson test --suite DPDK:fast-tests

2)FreeBSD dont support file-prefix, so  changes are made to run the
tests without 'file-prefix'option.
eg. meson test --suite DPDK:fast-tests

Signed-off-by: Agalya Babu RadhaKrishnan <agalyax.babu.radhakrishnan@intel.com>
---
 app/test/meson.build | 28 +++++++++++++++++++++++-----
 1 file changed, 23 insertions(+), 5 deletions(-)

diff --git a/app/test/meson.build b/app/test/meson.build
index 05e5ddeb0..8303aaaa6 100644
--- a/app/test/meson.build
+++ b/app/test/meson.build
@@ -337,11 +337,29 @@ if get_option('tests')
 	timeout_seconds_fast = 10
 
 	foreach arg : fast_parallel_test_names
-		test(arg, dpdk_test,
-			env : ['DPDK_TEST=' + arg],
-			args : ['-c f','-n 4', '--file-prefix=@0@'.format(arg)],
-			timeout : timeout_seconds_fast,
-			suite : 'fast-tests')
+		if host_machine.system() == 'linux'
+			lcore_number = 1
+			cores_running = run_command('nproc')
+			cores_used = cores_running.stdout().to_int()
+			test(arg, dpdk_test,
+				env : ['DPDK_TEST=' + arg],
+				args : ['-l @0@'.format(lcore_number), '-n 4', '--file-prefix=@0@'.format(arg)],
+				timeout : timeout_seconds_fast,
+				suite : 'fast-tests')
+			if (lcore_number < cores_used)
+				lcore_number += 1
+			else
+				lcore_number = 1
+			endif
+		else
+			test(arg, dpdk_test,
+				env : ['DPDK_TEST=' + arg],
+				args : ['-n 4'],
+				is_parallel : false,
+				timeout : timeout_seconds_fast,
+				suite : 'fast-tests')
+		endif
+
 	endforeach
 
 	foreach arg : fast_non_parallel_test_names
-- 
2.17.2