[PATCH] Make client behavior configurable: drop_caches

[Lucas Meneghel Rodrigues <lmr@redhat.com>]

Right now autotest will drop caches between:
 * Test executions
 * Same test iterations

This change turns those into configurable options on
global_config.ini. Default configuration:

[CLIENT]
drop_caches: True
drop_caches_between_iterations: True

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>
---
 client/bin/autotest |    7 ++++++-
 client/bin/job.py   |   11 ++++++++---
 global_config.ini   |    7 ++++++-
 3 files changed, 20 insertions(+), 5 deletions(-)

diff --git a/client/bin/autotest b/client/bin/autotest
index fe8f2c7..2d47843 100755
--- a/client/bin/autotest
+++ b/client/bin/autotest
@@ -6,6 +6,7 @@ import os, sys, shutil
 import common
 from optparse import OptionParser
 from autotest_lib.client.bin import job
+from autotest_lib.client.common_lib import global_config
 
 
 # Use the name of the binary to find the real installation directory
@@ -58,5 +59,9 @@ options, args = parser.parse_args()
 if len(args) != 1:
     usage()
 
+drop_caches = global_config.global_config.get_config_value('CLIENT',
+                                                           'drop_caches',
+                                                           type=bool)
+
 # JOB: run the specified job control file.
-job.runjob(os.path.realpath(args[0]), options)
+job.runjob(os.path.realpath(args[0]), drop_caches, options)
diff --git a/client/bin/job.py b/client/bin/job.py
index ebfb3a3..6099188 100755
--- a/client/bin/job.py
+++ b/client/bin/job.py
@@ -15,6 +15,8 @@ from autotest_lib.client.bin import config, sysinfo, test, local_host
 from autotest_lib.client.bin import partition as partition_lib
 from autotest_lib.client.common_lib import error, barrier, log, logging_manager
 from autotest_lib.client.common_lib import base_packages, packages
+from autotest_lib.client.common_lib import global_config
+
 
 LAST_BOOT_TAG = object()
 NO_DEFAULT = object()
@@ -251,7 +253,10 @@ class base_job(object):
         """
         Perform the drop caches initialization.
         """
-        self.drop_caches_between_iterations = True
+        self.drop_caches_between_iterations = (
+                       global_config.global_config.get_config_value('CLIENT',
+                                            'drop_caches_between_iterations',
+                                            type=bool))
         self.drop_caches = drop_caches
         if self.drop_caches:
             logging.debug("Dropping caches")
@@ -1339,7 +1344,7 @@ class disk_usage_monitor:
         return decorator
 
 
-def runjob(control, options):
+def runjob(control, drop_caches, options):
     """
     Run a job using the given control file.
 
@@ -1367,7 +1372,7 @@ def runjob(control, options):
         if options.cont and not os.path.exists(state):
             raise error.JobComplete("all done")
 
-        myjob = job(control, options)
+        myjob = job(control=control, drop_caches=drop_caches, options=options)
 
         # Load in the users control file, may do any one of:
         #  1) execute in toto
diff --git a/global_config.ini b/global_config.ini
index cc20a96..d018374 100644
--- a/global_config.ini
+++ b/global_config.ini
@@ -28,7 +28,6 @@ parse_failed_repair_default: 0
 # Autotest potential install paths
 client_autodir_paths: /usr/local/autotest,/home/autotest
 
-
 [SERVER]
 hostname: autotest
 # Turn on RPC Logging
@@ -48,6 +47,12 @@ smtp_port:
 smtp_user:
 smtp_password:
 
+[CLIENT]
+# Drop test client caches between every test execution
+drop_caches: True
+# Drop test client caches between every test iteration execution
+drop_caches_between_iterations: True
+
 [SCHEDULER]
 die_on_orphans: False
 enable_scheduler: True
-- 
1.6.2.5