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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
110 lines
2.9 KiB
C
110 lines
2.9 KiB
C
/*
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* Copyright © 2016 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include <linux/compiler.h>
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#define selftest(name, func) __idx_##name,
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enum {
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#include TESTS
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};
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#undef selftest
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#define selftest(n, f) [__idx_##n] = { .name = #n, .func = f },
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static struct drm_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 TESTS
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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 TESTS
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#undef selftest
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static void set_default_test_all(struct drm_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 drm_selftest *st,
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unsigned long count,
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void *data)
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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 drm_*_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_debug("drm: Running %s\n", st->name);
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err = st->func(data);
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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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rcu_barrier();
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return err;
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}
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static int __maybe_unused
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__drm_subtests(const char *caller,
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const struct drm_subtest *st,
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int count,
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void *data)
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{
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int err;
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for (; count--; st++) {
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pr_debug("Running %s/%s\n", caller, st->name);
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err = st->func(data);
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if (err) {
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pr_err("%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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