projects/linux·blob v5.13 · refs

116 lines · 2.7 KiB

1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (c) 2020, Oracle and/or its affiliates.
4 * Author: Alan Maguire <[email protected]>
5 */
6
7#include <linux/debugfs.h>
8#include <linux/module.h>
9
10#include <kunit/test.h>
11
12#include "string-stream.h"
13
14#define KUNIT_DEBUGFS_ROOT "kunit"
15#define KUNIT_DEBUGFS_RESULTS "results"
16
17/*
18 * Create a debugfs representation of test suites:
19 *
20 * Path Semantics
21 * /sys/kernel/debug/kunit/<testsuite>/results Show results of last run for
22 * testsuite
23 *
24 */
25
26static struct dentry *debugfs_rootdir;
27
28void kunit_debugfs_cleanup(void)
29{
30 debugfs_remove_recursive(debugfs_rootdir);
31}
32
33void kunit_debugfs_init(void)
34{
35 if (!debugfs_rootdir)
36 debugfs_rootdir = debugfs_create_dir(KUNIT_DEBUGFS_ROOT, NULL);
37}
38
39static void debugfs_print_result(struct seq_file *seq,
40 struct kunit_suite *suite,
41 struct kunit_case *test_case)
42{
43 if (!test_case || !test_case->log)
44 return;
45
46 seq_printf(seq, "%s", test_case->log);
47}
48
49/*
50 * /sys/kernel/debug/kunit/<testsuite>/results shows all results for testsuite.
51 */
52static int debugfs_print_results(struct seq_file *seq, void *v)
53{
54 struct kunit_suite *suite = (struct kunit_suite *)seq->private;
55 bool success = kunit_suite_has_succeeded(suite);
56 struct kunit_case *test_case;
57
58 if (!suite || !suite->log)
59 return 0;
60
61 seq_printf(seq, "%s", suite->log);
62
63 kunit_suite_for_each_test_case(suite, test_case)
64 debugfs_print_result(seq, suite, test_case);
65
66 seq_printf(seq, "%s %d - %s\n",
67 kunit_status_to_string(success), 1, suite->name);
68 return 0;
69}
70
71static int debugfs_release(struct inode *inode, struct file *file)
72{
73 return single_release(inode, file);
74}
75
76static int debugfs_results_open(struct inode *inode, struct file *file)
77{
78 struct kunit_suite *suite;
79
80 suite = (struct kunit_suite *)inode->i_private;
81
82 return single_open(file, debugfs_print_results, suite);
83}
84
85static const struct file_operations debugfs_results_fops = {
86 .open = debugfs_results_open,
87 .read = seq_read,
88 .llseek = seq_lseek,
89 .release = debugfs_release,
90};
91
92void kunit_debugfs_create_suite(struct kunit_suite *suite)
93{
94 struct kunit_case *test_case;
95
96 /* Allocate logs before creating debugfs representation. */
97 suite->log = kzalloc(KUNIT_LOG_SIZE, GFP_KERNEL);
98 kunit_suite_for_each_test_case(suite, test_case)
99 test_case->log = kzalloc(KUNIT_LOG_SIZE, GFP_KERNEL);
100
101 suite->debugfs = debugfs_create_dir(suite->name, debugfs_rootdir);
102
103 debugfs_create_file(KUNIT_DEBUGFS_RESULTS, S_IFREG | 0444,
104 suite->debugfs,
105 suite, &debugfs_results_fops);
106}
107
108void kunit_debugfs_destroy_suite(struct kunit_suite *suite)
109{
110 struct kunit_case *test_case;
111
112 debugfs_remove_recursive(suite->debugfs);
113 kfree(suite->log);
114 kunit_suite_for_each_test_case(suite, test_case)
115 kfree(test_case->log);
116}