forked from mirrors/linux
e2219db280
add debugfs support for displaying kunit test suite results; this is especially useful for module-loaded tests to allow disentangling of test result display from other dmesg events. debugfs support is provided if CONFIG_KUNIT_DEBUGFS=y. As well as printk()ing messages, we append them to a per-test log. Signed-off-by: Alan Maguire <alan.maguire@oracle.com> Reviewed-by: Brendan Higgins <brendanhiggins@google.com> Reviewed-by: Frank Rowand <frank.rowand@sony.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
116 lines
2.7 KiB
C
116 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (c) 2020, Oracle and/or its affiliates.
|
|
* Author: Alan Maguire <alan.maguire@oracle.com>
|
|
*/
|
|
|
|
#include <linux/debugfs.h>
|
|
#include <linux/module.h>
|
|
|
|
#include <kunit/test.h>
|
|
|
|
#include "string-stream.h"
|
|
|
|
#define KUNIT_DEBUGFS_ROOT "kunit"
|
|
#define KUNIT_DEBUGFS_RESULTS "results"
|
|
|
|
/*
|
|
* Create a debugfs representation of test suites:
|
|
*
|
|
* Path Semantics
|
|
* /sys/kernel/debug/kunit/<testsuite>/results Show results of last run for
|
|
* testsuite
|
|
*
|
|
*/
|
|
|
|
static struct dentry *debugfs_rootdir;
|
|
|
|
void kunit_debugfs_cleanup(void)
|
|
{
|
|
debugfs_remove_recursive(debugfs_rootdir);
|
|
}
|
|
|
|
void kunit_debugfs_init(void)
|
|
{
|
|
if (!debugfs_rootdir)
|
|
debugfs_rootdir = debugfs_create_dir(KUNIT_DEBUGFS_ROOT, NULL);
|
|
}
|
|
|
|
static void debugfs_print_result(struct seq_file *seq,
|
|
struct kunit_suite *suite,
|
|
struct kunit_case *test_case)
|
|
{
|
|
if (!test_case || !test_case->log)
|
|
return;
|
|
|
|
seq_printf(seq, "%s", test_case->log);
|
|
}
|
|
|
|
/*
|
|
* /sys/kernel/debug/kunit/<testsuite>/results shows all results for testsuite.
|
|
*/
|
|
static int debugfs_print_results(struct seq_file *seq, void *v)
|
|
{
|
|
struct kunit_suite *suite = (struct kunit_suite *)seq->private;
|
|
bool success = kunit_suite_has_succeeded(suite);
|
|
struct kunit_case *test_case;
|
|
|
|
if (!suite || !suite->log)
|
|
return 0;
|
|
|
|
seq_printf(seq, "%s", suite->log);
|
|
|
|
kunit_suite_for_each_test_case(suite, test_case)
|
|
debugfs_print_result(seq, suite, test_case);
|
|
|
|
seq_printf(seq, "%s %d - %s\n",
|
|
kunit_status_to_string(success), 1, suite->name);
|
|
return 0;
|
|
}
|
|
|
|
static int debugfs_release(struct inode *inode, struct file *file)
|
|
{
|
|
return single_release(inode, file);
|
|
}
|
|
|
|
static int debugfs_results_open(struct inode *inode, struct file *file)
|
|
{
|
|
struct kunit_suite *suite;
|
|
|
|
suite = (struct kunit_suite *)inode->i_private;
|
|
|
|
return single_open(file, debugfs_print_results, suite);
|
|
}
|
|
|
|
static const struct file_operations debugfs_results_fops = {
|
|
.open = debugfs_results_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = debugfs_release,
|
|
};
|
|
|
|
void kunit_debugfs_create_suite(struct kunit_suite *suite)
|
|
{
|
|
struct kunit_case *test_case;
|
|
|
|
/* Allocate logs before creating debugfs representation. */
|
|
suite->log = kzalloc(KUNIT_LOG_SIZE, GFP_KERNEL);
|
|
kunit_suite_for_each_test_case(suite, test_case)
|
|
test_case->log = kzalloc(KUNIT_LOG_SIZE, GFP_KERNEL);
|
|
|
|
suite->debugfs = debugfs_create_dir(suite->name, debugfs_rootdir);
|
|
|
|
debugfs_create_file(KUNIT_DEBUGFS_RESULTS, S_IFREG | 0444,
|
|
suite->debugfs,
|
|
suite, &debugfs_results_fops);
|
|
}
|
|
|
|
void kunit_debugfs_destroy_suite(struct kunit_suite *suite)
|
|
{
|
|
struct kunit_case *test_case;
|
|
|
|
debugfs_remove_recursive(suite->debugfs);
|
|
kfree(suite->log);
|
|
kunit_suite_for_each_test_case(suite, test_case)
|
|
kfree(test_case->log);
|
|
}
|