// 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; enum kunit_status 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_ok_not_ok(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); }