[PATCH v2 kunit-next 2/3] kunit: add "run" debugfs file to run suites, display results

[Alan Maguire <alan.maguire@xxxxxxxxxx>]

Add /sys/kernel/debug/kunit/<suite>/run file which will run the
specified suite and show results.

Signed-off-by: Alan Maguire <alan.maguire@xxxxxxxxxx>
---
 lib/kunit/debugfs.c | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/lib/kunit/debugfs.c b/lib/kunit/debugfs.c
index 578843c..1ea3fbc 100644
--- a/lib/kunit/debugfs.c
+++ b/lib/kunit/debugfs.c
@@ -13,6 +13,7 @@
 
 #define KUNIT_DEBUGFS_ROOT             "kunit"
 #define KUNIT_DEBUGFS_RESULTS          "results"
+#define KUNIT_DEBUGFS_RUN		"run"
 
 /*
  * Create a debugfs representation of test suites:
@@ -20,6 +21,7 @@
  * Path						Semantics
  * /sys/kernel/debug/kunit/<testsuite>/results	Show results of last run for
  *						testsuite
+ * /sys/kernel/debug/kunit/<testsuite>/run	Run testsuite and show results
  *
  */
 
@@ -67,6 +69,18 @@ static int debugfs_print_results(struct seq_file *seq, void *v)
 	return 0;
 }
 
+/*
+ * /sys/kernel/debug/kunit/<testsuite>/run (re)runs suite and shows all results.
+ */
+static int debugfs_run_print_results(struct seq_file *seq, void *v)
+{
+	struct kunit_suite *suite = (struct kunit_suite *)seq->private;
+
+	kunit_run_tests(suite);
+
+	return debugfs_print_results(seq, v);
+}
+
 static int debugfs_release(struct inode *inode, struct file *file)
 {
 	return single_release(inode, file);
@@ -88,6 +102,22 @@ static int debugfs_results_open(struct inode *inode, struct file *file)
 	.release = debugfs_release,
 };
 
+static int debugfs_run_open(struct inode *inode, struct file *file)
+{
+	struct kunit_suite *suite;
+
+	suite = (struct kunit_suite *)inode->i_private;
+
+	return single_open(file, debugfs_run_print_results, suite);
+}
+
+static const struct file_operations debugfs_run_fops = {
+	.open = debugfs_run_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = debugfs_release,
+};
+
 void kunit_debugfs_create_suite(struct kunit_suite *suite)
 {
 	/* First add /sys/kernel/debug/kunit/<testsuite> */
@@ -96,6 +126,9 @@ void kunit_debugfs_create_suite(struct kunit_suite *suite)
 	debugfs_create_file(KUNIT_DEBUGFS_RESULTS, S_IFREG | 0444,
 			    suite->debugfs,
 			    suite, &debugfs_results_fops);
+	debugfs_create_file(KUNIT_DEBUGFS_RUN, S_IFREG | 0444,
+			    suite->debugfs,
+			    suite, &debugfs_run_fops);
 }
 
 void kunit_debugfs_destroy_suite(struct kunit_suite *suite)
-- 
1.8.3.1