mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-11-01 17:08:10 +00:00
50f0033d1a
First we introduce a smattering of infrastructure for writing selftests. The idea is that we have a test module that exercises a particular portion of the exported API, and that module provides a set of tests that can either be run as an ensemble via kselftest or individually via an igt harness (in this case igt/drm_mm). To accommodate selecting individual tests, we export a boolean parameter to control selection of each test - that is hidden inside a bunch of reusable boilerplate macros to keep writing the tests simple. v2: Choose a random random_seed unless one is specified by the user. v3: More parameters to control max_iterations and max_prime of the tests. Testcase: igt/drm_mm Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Acked-by: Christian König <christian.koenig@amd.com> Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20161222083641.2691-7-chris@chris-wilson.co.uk
109 lines
2.9 KiB
C
109 lines
2.9 KiB
C
/*
|
|
* Copyright © 2016 Intel Corporation
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice (including the next
|
|
* paragraph) shall be included in all copies or substantial portions of the
|
|
* Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
|
* IN THE SOFTWARE.
|
|
*/
|
|
|
|
#include <linux/compiler.h>
|
|
|
|
#define selftest(name, func) __idx_##name,
|
|
enum {
|
|
#include TESTS
|
|
};
|
|
#undef selftest
|
|
|
|
#define selftest(n, f) [__idx_##n] = { .name = #n, .func = f },
|
|
static struct drm_selftest {
|
|
bool enabled;
|
|
const char *name;
|
|
int (*func)(void *);
|
|
} selftests[] = {
|
|
#include TESTS
|
|
};
|
|
#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 TESTS
|
|
#undef selftest
|
|
|
|
static void set_default_test_all(struct drm_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 drm_selftest *st,
|
|
unsigned long count,
|
|
void *data)
|
|
{
|
|
int err = 0;
|
|
|
|
set_default_test_all(st, count);
|
|
|
|
/* Tests are listed in natural order in drm_*_selftests.h */
|
|
for (; count--; st++) {
|
|
if (!st->enabled)
|
|
continue;
|
|
|
|
pr_debug("drm: Running %s\n", st->name);
|
|
err = st->func(data);
|
|
if (err)
|
|
break;
|
|
}
|
|
|
|
if (WARN(err > 0 || err == -ENOTTY,
|
|
"%s returned %d, conflicting with selftest's magic values!\n",
|
|
st->name, err))
|
|
err = -1;
|
|
|
|
rcu_barrier();
|
|
return err;
|
|
}
|
|
|
|
static int __maybe_unused
|
|
__drm_subtests(const char *caller,
|
|
const struct drm_subtest *st,
|
|
int count,
|
|
void *data)
|
|
{
|
|
int err;
|
|
|
|
for (; count--; st++) {
|
|
pr_debug("Running %s/%s\n", caller, st->name);
|
|
err = st->func(data);
|
|
if (err) {
|
|
pr_err("%s: %s failed with error %d\n",
|
|
caller, st->name, err);
|
|
return err;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|