oeqa: Add selftest parallelisation support

This allows oe-selftest to take a -j option which specifies how much test
parallelisation to use. Currently this is "module" based with each module
being split and run in a separate build directory. Further splitting could
be done but this seems a good compromise between test setup and parallelism.

You need python-testtools and python-subunit installed to use this but only
when the -j option is specified.

See notes posted to the openedmbedded-architecture list for more details
about the design choices here.

Some of this functionality may make more sense in the oeqa core ultimately.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 6 insertions, 2 deletions

diff --git a/meta/lib/oeqa/selftest/context.py b/meta/lib/oeqa/selftest/context.py
index 9e90d3c256..c937b8171c 100644
--- a/meta/lib/oeqa/selftest/context.py
+++ b/meta/lib/oeqa/selftest/context.py
@@ -25,14 +25,14 @@ class OESelftestTestContext(OETestContext):
         self.custommachine = None
         self.config_paths = config_paths
 
-    def runTests(self, machine=None, skips=[]):
+    def runTests(self, processes=None, machine=None, skips=[]):
         if machine:
             self.custommachine = machine
             if machine == 'random':
                 self.custommachine = choice(self.machines)
             self.logger.info('Run tests with custom MACHINE set to: %s' % \
                     self.custommachine)
-        return super(OESelftestTestContext, self).runTests(skips)
+        return super(OESelftestTestContext, self).runTests(processes, skips)
 
     def listTests(self, display_type, machine=None):
         return super(OESelftestTestContext, self).listTests(display_type)
@@ -68,6 +68,9 @@ class OESelftestTestContextExecutor(OETestContextExecutor):
                 action="store_true", default=False,
                 help='List all available tests.')
 
+        parser.add_argument('-j', '--num-processes', dest='processes', action='store',
+                type=int, help="number of processes to execute in parallel with")
+
         parser.add_argument('--machine', required=False, choices=['random', 'all'],
                             help='Run tests on different machines (random/all).')
         
@@ -137,6 +140,7 @@ class OESelftestTestContextExecutor(OETestContextExecutor):
                 self.tc_kwargs['init']['config_paths']['bblayers_backup'])
 
         self.tc_kwargs['run']['skips'] = args.skips
+        self.tc_kwargs['run']['processes'] = args.processes
 
     def _pre_run(self):
         def _check_required_env_variables(vars):