blob: 12ef2837c89b0d3d807c320046c97c8235d34a60 [file] [log] [blame]
// SPDX-License-Identifier: MIT
/*
* Copyright © 2020 Intel Corporation
*/
#include <linux/sort.h>
#include "selftests/i915_random.h"
static const unsigned int sizes[] = {
SZ_4K,
SZ_64K,
SZ_2M,
CHUNK_SZ - SZ_4K,
CHUNK_SZ,
CHUNK_SZ + SZ_4K,
SZ_64M,
};
static struct drm_i915_gem_object *
create_lmem_or_internal(struct drm_i915_private *i915, size_t size)
{
struct drm_i915_gem_object *obj;
obj = i915_gem_object_create_lmem(i915, size, 0);
if (!IS_ERR(obj))
return obj;
return i915_gem_object_create_internal(i915, size);
}
static int copy(struct intel_migrate *migrate,
int (*fn)(struct intel_migrate *migrate,
struct i915_gem_ww_ctx *ww,
struct drm_i915_gem_object *src,
struct drm_i915_gem_object *dst,
struct i915_request **out),
u32 sz, struct rnd_state *prng)
{
struct drm_i915_private *i915 = migrate->context->engine->i915;
struct drm_i915_gem_object *src, *dst;
struct i915_request *rq;
struct i915_gem_ww_ctx ww;
u32 *vaddr;
int err = 0;
int i;
src = create_lmem_or_internal(i915, sz);
if (IS_ERR(src))
return 0;
dst = i915_gem_object_create_internal(i915, sz);
if (IS_ERR(dst))
goto err_free_src;
for_i915_gem_ww(&ww, err, true) {
err = i915_gem_object_lock(src, &ww);
if (err)
continue;
err = i915_gem_object_lock(dst, &ww);
if (err)
continue;
vaddr = i915_gem_object_pin_map(src, I915_MAP_WC);
if (IS_ERR(vaddr)) {
err = PTR_ERR(vaddr);
continue;
}
for (i = 0; i < sz / sizeof(u32); i++)
vaddr[i] = i;
i915_gem_object_flush_map(src);
vaddr = i915_gem_object_pin_map(dst, I915_MAP_WC);
if (IS_ERR(vaddr)) {
err = PTR_ERR(vaddr);
goto unpin_src;
}
for (i = 0; i < sz / sizeof(u32); i++)
vaddr[i] = ~i;
i915_gem_object_flush_map(dst);
err = fn(migrate, &ww, src, dst, &rq);
if (!err)
continue;
if (err != -EDEADLK && err != -EINTR && err != -ERESTARTSYS)
pr_err("%ps failed, size: %u\n", fn, sz);
if (rq) {
i915_request_wait(rq, 0, HZ);
i915_request_put(rq);
}
i915_gem_object_unpin_map(dst);
unpin_src:
i915_gem_object_unpin_map(src);
}
if (err)
goto err_out;
if (rq) {
if (i915_request_wait(rq, 0, HZ) < 0) {
pr_err("%ps timed out, size: %u\n", fn, sz);
err = -ETIME;
}
i915_request_put(rq);
}
for (i = 0; !err && i < sz / PAGE_SIZE; i++) {
int x = i * 1024 + i915_prandom_u32_max_state(1024, prng);
if (vaddr[x] != x) {
pr_err("%ps failed, size: %u, offset: %zu\n",
fn, sz, x * sizeof(u32));
igt_hexdump(vaddr + i * 1024, 4096);
err = -EINVAL;
}
}
i915_gem_object_unpin_map(dst);
i915_gem_object_unpin_map(src);
err_out:
i915_gem_object_put(dst);
err_free_src:
i915_gem_object_put(src);
return err;
}
static int clear(struct intel_migrate *migrate,
int (*fn)(struct intel_migrate *migrate,
struct i915_gem_ww_ctx *ww,
struct drm_i915_gem_object *obj,
u32 value,
struct i915_request **out),
u32 sz, struct rnd_state *prng)
{
struct drm_i915_private *i915 = migrate->context->engine->i915;
struct drm_i915_gem_object *obj;
struct i915_request *rq;
struct i915_gem_ww_ctx ww;
u32 *vaddr;
int err = 0;
int i;
obj = create_lmem_or_internal(i915, sz);
if (IS_ERR(obj))
return 0;
for_i915_gem_ww(&ww, err, true) {
err = i915_gem_object_lock(obj, &ww);
if (err)
continue;
vaddr = i915_gem_object_pin_map(obj, I915_MAP_WC);
if (IS_ERR(vaddr)) {
err = PTR_ERR(vaddr);
continue;
}
for (i = 0; i < sz / sizeof(u32); i++)
vaddr[i] = ~i;
i915_gem_object_flush_map(obj);
err = fn(migrate, &ww, obj, sz, &rq);
if (!err)
continue;
if (err != -EDEADLK && err != -EINTR && err != -ERESTARTSYS)
pr_err("%ps failed, size: %u\n", fn, sz);
if (rq) {
i915_request_wait(rq, 0, HZ);
i915_request_put(rq);
}
i915_gem_object_unpin_map(obj);
}
if (err)
goto err_out;
if (rq) {
if (i915_request_wait(rq, 0, HZ) < 0) {
pr_err("%ps timed out, size: %u\n", fn, sz);
err = -ETIME;
}
i915_request_put(rq);
}
for (i = 0; !err && i < sz / PAGE_SIZE; i++) {
int x = i * 1024 + i915_prandom_u32_max_state(1024, prng);
if (vaddr[x] != sz) {
pr_err("%ps failed, size: %u, offset: %zu\n",
fn, sz, x * sizeof(u32));
igt_hexdump(vaddr + i * 1024, 4096);
err = -EINVAL;
}
}
i915_gem_object_unpin_map(obj);
err_out:
i915_gem_object_put(obj);
return err;
}
static int __migrate_copy(struct intel_migrate *migrate,
struct i915_gem_ww_ctx *ww,
struct drm_i915_gem_object *src,
struct drm_i915_gem_object *dst,
struct i915_request **out)
{
return intel_migrate_copy(migrate, ww, NULL,
src->mm.pages->sgl, src->cache_level,
i915_gem_object_is_lmem(src),
dst->mm.pages->sgl, dst->cache_level,
i915_gem_object_is_lmem(dst),
out);
}
static int __global_copy(struct intel_migrate *migrate,
struct i915_gem_ww_ctx *ww,
struct drm_i915_gem_object *src,
struct drm_i915_gem_object *dst,
struct i915_request **out)
{
return intel_context_migrate_copy(migrate->context, NULL,
src->mm.pages->sgl, src->cache_level,
i915_gem_object_is_lmem(src),
dst->mm.pages->sgl, dst->cache_level,
i915_gem_object_is_lmem(dst),
out);
}
static int
migrate_copy(struct intel_migrate *migrate, u32 sz, struct rnd_state *prng)
{
return copy(migrate, __migrate_copy, sz, prng);
}
static int
global_copy(struct intel_migrate *migrate, u32 sz, struct rnd_state *prng)
{
return copy(migrate, __global_copy, sz, prng);
}
static int __migrate_clear(struct intel_migrate *migrate,
struct i915_gem_ww_ctx *ww,
struct drm_i915_gem_object *obj,
u32 value,
struct i915_request **out)
{
return intel_migrate_clear(migrate, ww, NULL,
obj->mm.pages->sgl,
obj->cache_level,
i915_gem_object_is_lmem(obj),
value, out);
}
static int __global_clear(struct intel_migrate *migrate,
struct i915_gem_ww_ctx *ww,
struct drm_i915_gem_object *obj,
u32 value,
struct i915_request **out)
{
return intel_context_migrate_clear(migrate->context, NULL,
obj->mm.pages->sgl,
obj->cache_level,
i915_gem_object_is_lmem(obj),
value, out);
}
static int
migrate_clear(struct intel_migrate *migrate, u32 sz, struct rnd_state *prng)
{
return clear(migrate, __migrate_clear, sz, prng);
}
static int
global_clear(struct intel_migrate *migrate, u32 sz, struct rnd_state *prng)
{
return clear(migrate, __global_clear, sz, prng);
}
static int live_migrate_copy(void *arg)
{
struct intel_migrate *migrate = arg;
struct drm_i915_private *i915 = migrate->context->engine->i915;
I915_RND_STATE(prng);
int i;
for (i = 0; i < ARRAY_SIZE(sizes); i++) {
int err;
err = migrate_copy(migrate, sizes[i], &prng);
if (err == 0)
err = global_copy(migrate, sizes[i], &prng);
i915_gem_drain_freed_objects(i915);
if (err)
return err;
}
return 0;
}
static int live_migrate_clear(void *arg)
{
struct intel_migrate *migrate = arg;
struct drm_i915_private *i915 = migrate->context->engine->i915;
I915_RND_STATE(prng);
int i;
for (i = 0; i < ARRAY_SIZE(sizes); i++) {
int err;
err = migrate_clear(migrate, sizes[i], &prng);
if (err == 0)
err = global_clear(migrate, sizes[i], &prng);
i915_gem_drain_freed_objects(i915);
if (err)
return err;
}
return 0;
}
struct threaded_migrate {
struct intel_migrate *migrate;
struct task_struct *tsk;
struct rnd_state prng;
};
static int threaded_migrate(struct intel_migrate *migrate,
int (*fn)(void *arg),
unsigned int flags)
{
const unsigned int n_cpus = num_online_cpus() + 1;
struct threaded_migrate *thread;
I915_RND_STATE(prng);
unsigned int i;
int err = 0;
thread = kcalloc(n_cpus, sizeof(*thread), GFP_KERNEL);
if (!thread)
return 0;
for (i = 0; i < n_cpus; ++i) {
struct task_struct *tsk;
thread[i].migrate = migrate;
thread[i].prng =
I915_RND_STATE_INITIALIZER(prandom_u32_state(&prng));
tsk = kthread_run(fn, &thread[i], "igt-%d", i);
if (IS_ERR(tsk)) {
err = PTR_ERR(tsk);
break;
}
get_task_struct(tsk);
thread[i].tsk = tsk;
}
msleep(10); /* start all threads before we kthread_stop() */
for (i = 0; i < n_cpus; ++i) {
struct task_struct *tsk = thread[i].tsk;
int status;
if (IS_ERR_OR_NULL(tsk))
continue;
status = kthread_stop(tsk);
if (status && !err)
err = status;
put_task_struct(tsk);
}
kfree(thread);
return err;
}
static int __thread_migrate_copy(void *arg)
{
struct threaded_migrate *tm = arg;
return migrate_copy(tm->migrate, 2 * CHUNK_SZ, &tm->prng);
}
static int thread_migrate_copy(void *arg)
{
return threaded_migrate(arg, __thread_migrate_copy, 0);
}
static int __thread_global_copy(void *arg)
{
struct threaded_migrate *tm = arg;
return global_copy(tm->migrate, 2 * CHUNK_SZ, &tm->prng);
}
static int thread_global_copy(void *arg)
{
return threaded_migrate(arg, __thread_global_copy, 0);
}
static int __thread_migrate_clear(void *arg)
{
struct threaded_migrate *tm = arg;
return migrate_clear(tm->migrate, 2 * CHUNK_SZ, &tm->prng);
}
static int __thread_global_clear(void *arg)
{
struct threaded_migrate *tm = arg;
return global_clear(tm->migrate, 2 * CHUNK_SZ, &tm->prng);
}
static int thread_migrate_clear(void *arg)
{
return threaded_migrate(arg, __thread_migrate_clear, 0);
}
static int thread_global_clear(void *arg)
{
return threaded_migrate(arg, __thread_global_clear, 0);
}
int intel_migrate_live_selftests(struct drm_i915_private *i915)
{
static const struct i915_subtest tests[] = {
SUBTEST(live_migrate_copy),
SUBTEST(live_migrate_clear),
SUBTEST(thread_migrate_copy),
SUBTEST(thread_migrate_clear),
SUBTEST(thread_global_copy),
SUBTEST(thread_global_clear),
};
struct intel_gt *gt = &i915->gt;
if (!gt->migrate.context)
return 0;
return i915_subtests(tests, &gt->migrate);
}
static struct drm_i915_gem_object *
create_init_lmem_internal(struct intel_gt *gt, size_t sz, bool try_lmem)
{
struct drm_i915_gem_object *obj = NULL;
int err;
if (try_lmem)
obj = i915_gem_object_create_lmem(gt->i915, sz, 0);
if (IS_ERR_OR_NULL(obj)) {
obj = i915_gem_object_create_internal(gt->i915, sz);
if (IS_ERR(obj))
return obj;
}
i915_gem_object_trylock(obj);
err = i915_gem_object_pin_pages(obj);
if (err) {
i915_gem_object_unlock(obj);
i915_gem_object_put(obj);
return ERR_PTR(err);
}
return obj;
}
static int wrap_ktime_compare(const void *A, const void *B)
{
const ktime_t *a = A, *b = B;
return ktime_compare(*a, *b);
}
static int __perf_clear_blt(struct intel_context *ce,
struct scatterlist *sg,
enum i915_cache_level cache_level,
bool is_lmem,
size_t sz)
{
ktime_t t[5];
int pass;
int err = 0;
for (pass = 0; pass < ARRAY_SIZE(t); pass++) {
struct i915_request *rq;
ktime_t t0, t1;
t0 = ktime_get();
err = intel_context_migrate_clear(ce, NULL, sg, cache_level,
is_lmem, 0, &rq);
if (rq) {
if (i915_request_wait(rq, 0, MAX_SCHEDULE_TIMEOUT) < 0)
err = -EIO;
i915_request_put(rq);
}
if (err)
break;
t1 = ktime_get();
t[pass] = ktime_sub(t1, t0);
}
if (err)
return err;
sort(t, ARRAY_SIZE(t), sizeof(*t), wrap_ktime_compare, NULL);
pr_info("%s: %zd KiB fill: %lld MiB/s\n",
ce->engine->name, sz >> 10,
div64_u64(mul_u32_u32(4 * sz,
1000 * 1000 * 1000),
t[1] + 2 * t[2] + t[3]) >> 20);
return 0;
}
static int perf_clear_blt(void *arg)
{
struct intel_gt *gt = arg;
static const unsigned long sizes[] = {
SZ_4K,
SZ_64K,
SZ_2M,
SZ_64M
};
int i;
for (i = 0; i < ARRAY_SIZE(sizes); i++) {
struct drm_i915_gem_object *dst;
int err;
dst = create_init_lmem_internal(gt, sizes[i], true);
if (IS_ERR(dst))
return PTR_ERR(dst);
err = __perf_clear_blt(gt->migrate.context,
dst->mm.pages->sgl,
I915_CACHE_NONE,
i915_gem_object_is_lmem(dst),
sizes[i]);
i915_gem_object_unlock(dst);
i915_gem_object_put(dst);
if (err)
return err;
}
return 0;
}
static int __perf_copy_blt(struct intel_context *ce,
struct scatterlist *src,
enum i915_cache_level src_cache_level,
bool src_is_lmem,
struct scatterlist *dst,
enum i915_cache_level dst_cache_level,
bool dst_is_lmem,
size_t sz)
{
ktime_t t[5];
int pass;
int err = 0;
for (pass = 0; pass < ARRAY_SIZE(t); pass++) {
struct i915_request *rq;
ktime_t t0, t1;
t0 = ktime_get();
err = intel_context_migrate_copy(ce, NULL,
src, src_cache_level,
src_is_lmem,
dst, dst_cache_level,
dst_is_lmem,
&rq);
if (rq) {
if (i915_request_wait(rq, 0, MAX_SCHEDULE_TIMEOUT) < 0)
err = -EIO;
i915_request_put(rq);
}
if (err)
break;
t1 = ktime_get();
t[pass] = ktime_sub(t1, t0);
}
if (err)
return err;
sort(t, ARRAY_SIZE(t), sizeof(*t), wrap_ktime_compare, NULL);
pr_info("%s: %zd KiB copy: %lld MiB/s\n",
ce->engine->name, sz >> 10,
div64_u64(mul_u32_u32(4 * sz,
1000 * 1000 * 1000),
t[1] + 2 * t[2] + t[3]) >> 20);
return 0;
}
static int perf_copy_blt(void *arg)
{
struct intel_gt *gt = arg;
static const unsigned long sizes[] = {
SZ_4K,
SZ_64K,
SZ_2M,
SZ_64M
};
int i;
for (i = 0; i < ARRAY_SIZE(sizes); i++) {
struct drm_i915_gem_object *src, *dst;
int err;
src = create_init_lmem_internal(gt, sizes[i], true);
if (IS_ERR(src))
return PTR_ERR(src);
dst = create_init_lmem_internal(gt, sizes[i], false);
if (IS_ERR(dst)) {
err = PTR_ERR(dst);
goto err_src;
}
err = __perf_copy_blt(gt->migrate.context,
src->mm.pages->sgl,
I915_CACHE_NONE,
i915_gem_object_is_lmem(src),
dst->mm.pages->sgl,
I915_CACHE_NONE,
i915_gem_object_is_lmem(dst),
sizes[i]);
i915_gem_object_unlock(dst);
i915_gem_object_put(dst);
err_src:
i915_gem_object_unlock(src);
i915_gem_object_put(src);
if (err)
return err;
}
return 0;
}
int intel_migrate_perf_selftests(struct drm_i915_private *i915)
{
static const struct i915_subtest tests[] = {
SUBTEST(perf_clear_blt),
SUBTEST(perf_copy_blt),
};
struct intel_gt *gt = &i915->gt;
if (intel_gt_is_wedged(gt))
return 0;
if (!gt->migrate.context)
return 0;
return intel_gt_live_subtests(tests, gt);
}