Re: [PATCH i-g-t 4/7] lib/igt_chamelium: Add support for configurable DUT suspend/resume delay

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On 26/06/17 17:33, Paul Kocialkowski wrote:
On Mon, 2017-06-26 at 17:25 +0300, Martin Peres wrote:
On 26/06/17 16:59, Paul Kocialkowski wrote:
This adds support for reading a SuspendResumeDelay property (under
[DUT]) in the IGT configuration (igtrc) and exposing it through a
chamelium_get_suspend_resume_delay function.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@xxxxxxxxxxxxxxx>
---
   lib/igt_chamelium.c | 31 ++++++++++++++++++++++++++++++-
   lib/igt_chamelium.h |  1 +
   2 files changed, 31 insertions(+), 1 deletion(-)

diff --git a/lib/igt_chamelium.c b/lib/igt_chamelium.c
index 225f98c3..a1aaf405 100644
--- a/lib/igt_chamelium.c
+++ b/lib/igt_chamelium.c
@@ -58,7 +58,7 @@
    *	[Chamelium]
    *	URL=http://chameleon:9992 # The URL used for connecting to the
Chamelium's RPC server
    *
- *	# The rest of the sections are used for defining connector
mappings.
+ *	# The following sections are used for defining connector
mappings.
    *	# This is required so any tests using the Chamelium know which
connector
    *	# on the test machine should be connected to each Chamelium
port.
    *	#
@@ -70,12 +70,19 @@
    *
    *	[Chamelium:HDMI-A-1]
    *	ChameliumPortID=3
+ *
+ *	# The following section is used for configuring the Device Under
Test.
+ *	# It is not mandatory and allows overriding default values.
+ *	[DUT]
+ *	SuspendResumeDelay=10
    * ]|
    *
    * By default, this file is expected to exist in ~/.igtrc . The directory
for
    * this can be overriden by setting the environment variable
%IGT_CONFIG_PATH.
    */
+#define SUSPEND_RESUME_DELAY_DEFAULT 20 /* seconds */
+
   struct chamelium_edid {
   	int id;
   	struct igt_list link;
@@ -100,6 +107,7 @@ struct chamelium {
   	xmlrpc_env env;
   	xmlrpc_client *client;
   	char *url;
+	int suspend_resume_delay;
/* Indicates the last port to have been used for capturing video
*/
   	struct chamelium_port *capturing_port;
@@ -114,6 +122,20 @@ struct chamelium {
   static struct chamelium *cleanup_instance;

Why do you make this part of the chamelium configuration? This should be
common to all the suspend tests.

Fair enough, but at this point, only lib/igt_chamelium.c is using igtrc and all
the parsing is implemented there.

So one course of action here would be to move igtrc parsing outside of
igt_chamelium (maybe to igt_core?) and use some global variable for storing this
value. What do you think?


That seems like a plan, except you can just call a function that will do the parsing for you and return a structure with all the parameters. If it is called a second time, just return the cached value.

What do you think, Lyude?
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