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

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Message-Id: <1579790840-27009-3-git-send-email-alan.maguire@oracle.com>
Date:   Thu, 23 Jan 2020 14:47:19 +0000
From:   Alan Maguire <alan.maguire@...cle.com>
To:     brendanhiggins@...gle.com
Cc:     corbet@....net, linux-kselftest@...r.kernel.org,
        kunit-dev@...glegroups.com, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Alan Maguire <alan.maguire@...cle.com>
Subject: [PATCH kunit 2/3] kunit: add "run" debugfs file to run suites, display results

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

Signed-off-by: Alan Maguire <alan.maguire@...cle.com>
---
 lib/kunit/debugfs.c | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/lib/kunit/debugfs.c b/lib/kunit/debugfs.c
index 5994f32..4881261 100644
--- a/lib/kunit/debugfs.c
+++ b/lib/kunit/debugfs.c
@@ -15,6 +15,7 @@
 
 #define KUNIT_DEBUGFS_ROOT             "kunit"
 #define KUNIT_DEBUGFS_RESULTS          "results"
+#define KUNIT_DEBUGFS_RUN		"run"
 
 /*
  * Create a debugfs representation of test suites:
@@ -23,6 +24,8 @@
  * /sys/kernel/debug/kunit/<testsuite>/results	Show results of last run for
  *						testsuite
  *
+ * /sys/kernel/debug/kunit/<testsuite>/run	Run testsuite and show results
+ *
  */
 
 static struct dentry *debugfs_rootdir;
@@ -72,6 +75,18 @@ 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);
@@ -93,6 +108,22 @@ 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 debugfs_create_suite(struct kunit_suite *suite)
 {
 	/* First add /sys/kernel/debug/kunit/<testsuite> */
@@ -103,6 +134,9 @@ void 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 debugfs_destroy_suite(struct kunit_suite *suite)
-- 
1.8.3.1