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drm/xe/kunit: Add basic tests for GuC context ID Manager

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Before we switch-over submission code to use new GuC context ID
Manager, lets add some kunit tests to make sure that ID manager
works as expected.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240313221112.1089-4-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko
2024-03-13 23:11:11 +01:00
parent 68fac8ab0f
commit f4fb157cd0
2 changed files with 140 additions and 0 deletions
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136
drivers/gpu/drm/xe/tests/xe_guc_id_mgr_test.c Normal file
View File

@@ -0,0 +1,136 @@
// SPDX-License-Identifier: GPL-2.0 AND MIT
/*
* Copyright © 2024 Intel Corporation
*/
#include <kunit/test.h>
#include "xe_device.h"
#include "xe_kunit_helpers.h"
static int guc_id_mgr_test_init(struct kunit *test)
{
struct xe_guc_id_mgr *idm;
xe_kunit_helper_xe_device_test_init(test);
idm = &xe_device_get_gt(test->priv, 0)->uc.guc.submission_state.idm;
mutex_init(idm_mutex(idm));
test->priv = idm;
return 0;
}
static void bad_init(struct kunit *test)
{
struct xe_guc_id_mgr *idm = test->priv;
KUNIT_EXPECT_EQ(test, -EINVAL, xe_guc_id_mgr_init(idm, 0));
KUNIT_EXPECT_EQ(test, -ERANGE, xe_guc_id_mgr_init(idm, GUC_ID_MAX + 1));
}
static void no_init(struct kunit *test)
{
struct xe_guc_id_mgr *idm = test->priv;
mutex_lock(idm_mutex(idm));
KUNIT_EXPECT_EQ(test, -ENODATA, xe_guc_id_mgr_reserve_locked(idm, 0));
mutex_unlock(idm_mutex(idm));
KUNIT_EXPECT_EQ(test, -ENODATA, xe_guc_id_mgr_reserve(idm, 1, 1));
}
static void init_fini(struct kunit *test)
{
struct xe_guc_id_mgr *idm = test->priv;
KUNIT_ASSERT_EQ(test, 0, xe_guc_id_mgr_init(idm, -1));
KUNIT_EXPECT_NOT_NULL(test, idm->bitmap);
KUNIT_EXPECT_EQ(test, idm->total, GUC_ID_MAX);
__fini_idm(NULL, idm);
KUNIT_EXPECT_NULL(test, idm->bitmap);
KUNIT_EXPECT_EQ(test, idm->total, 0);
}
static void check_used(struct kunit *test)
{
struct xe_guc_id_mgr *idm = test->priv;
unsigned int n;
KUNIT_ASSERT_EQ(test, 0, xe_guc_id_mgr_init(idm, 2));
mutex_lock(idm_mutex(idm));
for (n = 0; n < idm->total; n++) {
kunit_info(test, "n=%u", n);
KUNIT_EXPECT_EQ(test, idm->used, n);
KUNIT_EXPECT_GE(test, idm_reserve_chunk_locked(idm, 1, 0), 0);
KUNIT_EXPECT_EQ(test, idm->used, n + 1);
}
KUNIT_EXPECT_EQ(test, idm->used, idm->total);
idm_release_chunk_locked(idm, 0, idm->used);
KUNIT_EXPECT_EQ(test, idm->used, 0);
mutex_unlock(idm_mutex(idm));
}
static void check_quota(struct kunit *test)
{
struct xe_guc_id_mgr *idm = test->priv;
unsigned int n;
KUNIT_ASSERT_EQ(test, 0, xe_guc_id_mgr_init(idm, 2));
mutex_lock(idm_mutex(idm));
for (n = 0; n < idm->total - 1; n++) {
kunit_info(test, "n=%u", n);
KUNIT_EXPECT_EQ(test, idm_reserve_chunk_locked(idm, 1, idm->total), -EDQUOT);
KUNIT_EXPECT_EQ(test, idm_reserve_chunk_locked(idm, 1, idm->total - n), -EDQUOT);
KUNIT_EXPECT_EQ(test, idm_reserve_chunk_locked(idm, idm->total - n, 1), -EDQUOT);
KUNIT_EXPECT_GE(test, idm_reserve_chunk_locked(idm, 1, 1), 0);
}
KUNIT_EXPECT_LE(test, 0, idm_reserve_chunk_locked(idm, 1, 0));
KUNIT_EXPECT_EQ(test, idm->used, idm->total);
idm_release_chunk_locked(idm, 0, idm->total);
KUNIT_EXPECT_EQ(test, idm->used, 0);
mutex_unlock(idm_mutex(idm));
}
static void check_all(struct kunit *test)
{
struct xe_guc_id_mgr *idm = test->priv;
unsigned int n;
KUNIT_ASSERT_EQ(test, 0, xe_guc_id_mgr_init(idm, -1));
mutex_lock(idm_mutex(idm));
for (n = 0; n < idm->total; n++)
KUNIT_EXPECT_LE(test, 0, idm_reserve_chunk_locked(idm, 1, 0));
KUNIT_EXPECT_EQ(test, idm->used, idm->total);
for (n = 0; n < idm->total; n++)
idm_release_chunk_locked(idm, n, 1);
mutex_unlock(idm_mutex(idm));
}
static struct kunit_case guc_id_mgr_test_cases[] = {
KUNIT_CASE(bad_init),
KUNIT_CASE(no_init),
KUNIT_CASE(init_fini),
KUNIT_CASE(check_used),
KUNIT_CASE(check_quota),
KUNIT_CASE_SLOW(check_all),
{}
};
static struct kunit_suite guc_id_mgr_suite = {
.name = "guc_idm",
.test_cases = guc_id_mgr_test_cases,
.init = guc_id_mgr_test_init,
.exit = NULL,
};
kunit_test_suites(&guc_id_mgr_suite);

4
drivers/gpu/drm/xe/xe_guc_id_mgr.c
View File

@@ -273,3 +273,7 @@ void xe_guc_id_mgr_print(struct xe_guc_id_mgr *idm, struct drm_printer *p, int i
idm_print_locked(idm, p, indent);
mutex_unlock(idm_mutex(idm));
}
#if IS_BUILTIN(CONFIG_DRM_XE_KUNIT_TEST)
#include "tests/xe_guc_id_mgr_test.c"
#endif