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git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blob - drivers/dma-buf/selftest.c
1 /* SPDX-License-Identifier: MIT */
4 * Copyright © 2019 Intel Corporation
7 #include <linux/compiler.h>
8 #include <linux/kernel.h>
9 #include <linux/module.h>
10 #include <linux/sched/signal.h>
11 #include <linux/slab.h>
16 #define selftest(n, func) __idx_##n,
17 #include "selftests.h"
21 #define selftest(n, f) [__idx_##n] = { .name = #n, .func = f },
22 static struct selftest
{
27 #include "selftests.h"
31 /* Embed the line number into the parameter name so that we can order tests */
32 #define param(n) __PASTE(igt__, __PASTE(__PASTE(__LINE__, __), n))
33 #define selftest_0(n, func, id) \
34 module_param_named(id, selftests[__idx_##n].enabled, bool, 0400);
35 #define selftest(n, func) selftest_0(n, func, param(n))
36 #include "selftests.h"
39 int __sanitycheck__(void)
41 pr_debug("Hello World!\n");
45 static char *__st_filter
;
47 static bool apply_subtest_filter(const char *caller
, const char *name
)
49 char *filter
, *sep
, *tok
;
52 filter
= kstrdup(__st_filter
, GFP_KERNEL
);
53 for (sep
= filter
; (tok
= strsep(&sep
, ","));) {
65 sl
= strchr(tok
, '/');
68 if (strcmp(tok
, caller
)) {
76 if (strcmp(tok
, name
)) {
91 __subtests(const char *caller
, const struct subtest
*st
, int count
, void *data
)
95 for (; count
--; st
++) {
97 if (signal_pending(current
))
100 if (!apply_subtest_filter(caller
, st
->name
))
103 pr_info("dma-buf: Running %s/%s\n", caller
, st
->name
);
105 err
= st
->func(data
);
106 if (err
&& err
!= -EINTR
) {
107 pr_err("dma-buf/%s: %s failed with error %d\n",
108 caller
, st
->name
, err
);
116 static void set_default_test_all(struct selftest
*st
, unsigned long count
)
120 for (i
= 0; i
< count
; i
++)
124 for (i
= 0; i
< count
; i
++)
125 st
[i
].enabled
= true;
128 static int run_selftests(struct selftest
*st
, unsigned long count
)
132 set_default_test_all(st
, count
);
134 /* Tests are listed in natural order in selftests.h */
135 for (; count
--; st
++) {
139 pr_info("dma-buf: Running %s\n", st
->name
);
145 if (WARN(err
> 0 || err
== -ENOTTY
,
146 "%s returned %d, conflicting with selftest's magic values!\n",
153 static int __init
st_init(void)
155 return run_selftests(selftests
, ARRAY_SIZE(selftests
));
158 static void __exit
st_exit(void)
162 module_param_named(st_filter
, __st_filter
, charp
, 0400);
163 module_init(st_init
);
164 module_exit(st_exit
);
166 MODULE_DESCRIPTION("Self-test harness for dma-buf");
167 MODULE_LICENSE("GPL and additional rights");