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dma-buf: Remove the old selftest

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Nothing uses this framework anymore, remove it.

Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Link: https://lore.kernel.org/r/5-v1-0a349a394eff+14110-dmabuf_kunit_jgg@nvidia.com
This commit is contained in:
Jason Gunthorpe
2026-03-01 14:57:57 -04:00
committed by Christian König
parent 6055c9e333
commit 126c50bc2f
6 changed files with 1 additions and 220 deletions
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5
drivers/dma-buf/Kconfig
View File

@@ -49,11 +49,6 @@ config DMABUF_DEBUG
exporters. Specifically it validates that importers do not peek at the
underlying struct page when they import a buffer.
config DMABUF_SELFTESTS
tristate "Selftests for the dma-buf interfaces"
default n
depends on DMA_SHARED_BUFFER
config DMABUF_KUNIT_TEST
tristate "KUnit tests for DMA-BUF" if !KUNIT_ALL_TESTS
depends on KUNIT

5
drivers/dma-buf/Makefile
View File

@@ -7,11 +7,6 @@ obj-$(CONFIG_SYNC_FILE) += sync_file.o
obj-$(CONFIG_SW_SYNC) += sw_sync.o sync_debug.o
obj-$(CONFIG_UDMABUF) += udmabuf.o
dmabuf_selftests-y := \
selftest.o
obj-$(CONFIG_DMABUF_SELFTESTS) += dmabuf_selftests.o
dmabuf_kunit-y := \
st-dma-fence.o \
st-dma-fence-chain.o \

167
drivers/dma-buf/selftest.c
View File

@@ -1,167 +0,0 @@
/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2019 Intel Corporation
*/
#include <linux/compiler.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/sched/signal.h>
#include <linux/slab.h>
#include "selftest.h"
enum {
#define selftest(n, func) __idx_##n,
#include "selftests.h"
#undef selftest
};
#define selftest(n, f) [__idx_##n] = { .name = #n, .func = f },
static struct selftest {
bool enabled;
const char *name;
int (*func)(void);
} selftests[] = {
#include "selftests.h"
};
#undef selftest
/* Embed the line number into the parameter name so that we can order tests */
#define param(n) __PASTE(igt__, __PASTE(__PASTE(__LINE__, __), n))
#define selftest_0(n, func, id) \
module_param_named(id, selftests[__idx_##n].enabled, bool, 0400);
#define selftest(n, func) selftest_0(n, func, param(n))
#include "selftests.h"
#undef selftest
int __sanitycheck__(void)
{
pr_debug("Hello World!\n");
return 0;
}
static char *__st_filter;
static bool apply_subtest_filter(const char *caller, const char *name)
{
char *filter, *sep, *tok;
bool result = true;
filter = kstrdup(__st_filter, GFP_KERNEL);
for (sep = filter; (tok = strsep(&sep, ","));) {
bool allow = true;
char *sl;
if (*tok == '!') {
allow = false;
tok++;
}
if (*tok == '\0')
continue;
sl = strchr(tok, '/');
if (sl) {
*sl++ = '\0';
if (strcmp(tok, caller)) {
if (allow)
result = false;
continue;
}
tok = sl;
}
if (strcmp(tok, name)) {
if (allow)
result = false;
continue;
}
result = allow;
break;
}
kfree(filter);
return result;
}
int
__subtests(const char *caller, const struct subtest *st, int count, void *data)
{
int err;
for (; count--; st++) {
cond_resched();
if (signal_pending(current))
return -EINTR;
if (!apply_subtest_filter(caller, st->name))
continue;
pr_info("dma-buf: Running %s/%s\n", caller, st->name);
err = st->func(data);
if (err && err != -EINTR) {
pr_err("dma-buf/%s: %s failed with error %d\n",
caller, st->name, err);
return err;
}
}
return 0;
}
static void set_default_test_all(struct selftest *st, unsigned long count)
{
unsigned long i;
for (i = 0; i < count; i++)
if (st[i].enabled)
return;
for (i = 0; i < count; i++)
st[i].enabled = true;
}
static int run_selftests(struct selftest *st, unsigned long count)
{
int err = 0;
set_default_test_all(st, count);
/* Tests are listed in natural order in selftests.h */
for (; count--; st++) {
if (!st->enabled)
continue;
pr_info("dma-buf: Running %s\n", st->name);
err = st->func();
if (err)
break;
}
if (WARN(err > 0 || err == -ENOTTY,
"%s returned %d, conflicting with selftest's magic values!\n",
st->name, err))
err = -1;
return err;
}
static int __init st_init(void)
{
return run_selftests(selftests, ARRAY_SIZE(selftests));
}
static void __exit st_exit(void)
{
}
module_param_named(st_filter, __st_filter, charp, 0400);
module_init(st_init);
module_exit(st_exit);
MODULE_DESCRIPTION("Self-test harness for dma-buf");
MODULE_LICENSE("GPL and additional rights");

30
drivers/dma-buf/selftest.h
View File

@@ -1,30 +0,0 @@
// SPDX-License-Identifier: MIT
/*
* Copyright © 2019 Intel Corporation
*/
#ifndef __SELFTEST_H__
#define __SELFTEST_H__
#include <linux/compiler.h>
#define selftest(name, func) int func(void);
#include "selftests.h"
#undef selftest
struct subtest {
int (*func)(void *data);
const char *name;
};
int __subtests(const char *caller,
const struct subtest *st,
int count,
void *data);
#define subtests(T, data) \
__subtests(__func__, T, ARRAY_SIZE(T), data)
#define SUBTEST(x) { x, #x }
#endif /* __SELFTEST_H__ */

12
drivers/dma-buf/selftests.h
View File

@@ -1,12 +0,0 @@
/* SPDX-License-Identifier: MIT */
/* List each unit test as selftest(name, function)
*
* The name is used as both an enum and expanded as subtest__name to create
* a module parameter. It must be unique and legal for a C identifier.
*
* The function should be of type int function(void). It may be conditionally
* compiled using #if IS_ENABLED(CONFIG_DRM_I915_SELFTEST).
*
* Tests are executed in order by igt/dmabuf_selftest
*/
selftest(sanitycheck, __sanitycheck__) /* keep first (igt selfcheck) */

2
drivers/gpu/drm/i915/Kconfig.debug
View File

@@ -51,7 +51,7 @@ config DRM_I915_DEBUG
select DRM_DEBUG_MM if DRM=y
select DRM_EXPORT_FOR_TESTS if m
select DRM_KUNIT_TEST if KUNIT
select DMABUF_SELFTESTS
select DMABUF_KUNIT_TEST if KUNIT
select SW_SYNC # signaling validation framework (igt/syncobj*)
select DRM_I915_WERROR
select DRM_I915_DEBUG_GEM