168 lines
3.0 KiB
C
168 lines
3.0 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2019 Intel Corporation
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*/
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#include <linux/compiler.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/sched/signal.h>
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#include <linux/slab.h>
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#include "selftest.h"
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enum {
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#define selftest(n, func) __idx_##n,
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#include "selftests.h"
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#undef selftest
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};
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#define selftest(n, f) [__idx_##n] = { .name = #n, .func = f },
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static struct selftest {
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bool enabled;
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const char *name;
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int (*func)(void);
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} selftests[] = {
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#include "selftests.h"
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};
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#undef selftest
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/* Embed the line number into the parameter name so that we can order tests */
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#define param(n) __PASTE(igt__, __PASTE(__PASTE(__LINE__, __), n))
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#define selftest_0(n, func, id) \
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module_param_named(id, selftests[__idx_##n].enabled, bool, 0400);
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#define selftest(n, func) selftest_0(n, func, param(n))
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#include "selftests.h"
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#undef selftest
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int __sanitycheck__(void)
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{
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pr_debug("Hello World!\n");
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return 0;
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}
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static char *__st_filter;
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static bool apply_subtest_filter(const char *caller, const char *name)
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{
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char *filter, *sep, *tok;
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bool result = true;
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filter = kstrdup(__st_filter, GFP_KERNEL);
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for (sep = filter; (tok = strsep(&sep, ","));) {
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bool allow = true;
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char *sl;
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if (*tok == '!') {
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allow = false;
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tok++;
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}
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if (*tok == '\0')
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continue;
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sl = strchr(tok, '/');
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if (sl) {
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*sl++ = '\0';
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if (strcmp(tok, caller)) {
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if (allow)
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result = false;
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continue;
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}
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tok = sl;
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}
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if (strcmp(tok, name)) {
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if (allow)
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result = false;
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continue;
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}
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result = allow;
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break;
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}
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kfree(filter);
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return result;
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}
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int
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__subtests(const char *caller, const struct subtest *st, int count, void *data)
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{
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int err;
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for (; count--; st++) {
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cond_resched();
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if (signal_pending(current))
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return -EINTR;
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if (!apply_subtest_filter(caller, st->name))
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continue;
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pr_info("dma-buf: Running %s/%s\n", caller, st->name);
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err = st->func(data);
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if (err && err != -EINTR) {
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pr_err("dma-buf/%s: %s failed with error %d\n",
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caller, st->name, err);
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return err;
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}
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}
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return 0;
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}
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static void set_default_test_all(struct selftest *st, unsigned long count)
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{
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unsigned long i;
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for (i = 0; i < count; i++)
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if (st[i].enabled)
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return;
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for (i = 0; i < count; i++)
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st[i].enabled = true;
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}
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static int run_selftests(struct selftest *st, unsigned long count)
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{
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int err = 0;
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set_default_test_all(st, count);
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/* Tests are listed in natural order in selftests.h */
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for (; count--; st++) {
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if (!st->enabled)
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continue;
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pr_info("dma-buf: Running %s\n", st->name);
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err = st->func();
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if (err)
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break;
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}
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if (WARN(err > 0 || err == -ENOTTY,
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"%s returned %d, conflicting with selftest's magic values!\n",
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st->name, err))
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err = -1;
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return err;
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}
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static int __init st_init(void)
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{
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return run_selftests(selftests, ARRAY_SIZE(selftests));
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}
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static void __exit st_exit(void)
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{
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}
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module_param_named(st_filter, __st_filter, charp, 0400);
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module_init(st_init);
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module_exit(st_exit);
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MODULE_DESCRIPTION("Self-test harness for dma-buf");
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MODULE_LICENSE("GPL and additional rights");
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