[igt-dev] [PATCH i-g-t 09/14] benchmarks/gem_wsim: use lib code to query engines
Bernatowicz, Marcin
marcin.bernatowicz at linux.intel.com
Wed Sep 27 19:09:56 UTC 2023
On 9/26/2023 1:23 PM, Tvrtko Ursulin wrote:
>
> On 26/09/2023 09:44, Marcin Bernatowicz wrote:
>> Use code in lib/i915/gem_engine_topology to query engines.
>>
>> Signed-off-by: Marcin Bernatowicz <marcin.bernatowicz at linux.intel.com>
>> ---
>> benchmarks/gem_wsim.c | 157 +++++-------------------------------------
>> 1 file changed, 19 insertions(+), 138 deletions(-)
>>
>> diff --git a/benchmarks/gem_wsim.c b/benchmarks/gem_wsim.c
>> index 2e6eb6388..a3339e1b2 100644
>> --- a/benchmarks/gem_wsim.c
>> +++ b/benchmarks/gem_wsim.c
>> @@ -456,150 +456,31 @@ static int str_to_engine(const char *str)
>> return -1;
>> }
>> -static bool __engines_queried;
>> -static unsigned int __num_engines;
>> -static struct i915_engine_class_instance *__engines;
>> -
>> -static int
>> -__i915_query(int i915, struct drm_i915_query *q)
>> +static struct intel_engine_data *query_engines(void)
>> {
>> - if (igt_ioctl(i915, DRM_IOCTL_I915_QUERY, q))
>> - return -errno;
>> - return 0;
>> -}
>> + static struct intel_engine_data engines = {};
>> -static int
>> -__i915_query_items(int i915, struct drm_i915_query_item *items,
>> uint32_t n_items)
>> -{
>> - struct drm_i915_query q = {
>> - .num_items = n_items,
>> - .items_ptr = to_user_pointer(items),
>> - };
>> - return __i915_query(i915, &q);
>> -}
>> + if (engines.nengines)
>> + return &engines;
>> -static void
>> -i915_query_items(int i915, struct drm_i915_query_item *items,
>> uint32_t n_items)
>> -{
>> - igt_assert_eq(__i915_query_items(i915, items, n_items), 0);
>> -}
>> -
>> -static bool has_engine_query(int i915)
>> -{
>> - struct drm_i915_query_item item = {
>> - .query_id = DRM_I915_QUERY_ENGINE_INFO,
>> - };
>> -
>> - return __i915_query_items(i915, &item, 1) == 0 && item.length > 0;
>> -}
>> -
>> -static void query_engines(void)
>> -{
>> - struct i915_engine_class_instance *engines;
>> - unsigned int num;
>> -
>> - if (__engines_queried)
>> - return;
>> -
>> - __engines_queried = true;
>> -
>> - if (!has_engine_query(fd)) {
>> - unsigned int num_bsd = gem_has_bsd(fd) + gem_has_bsd2(fd);
>> - unsigned int i = 0;
>> -
>> - igt_assert(num_bsd);
>> -
>> - num = 1 + num_bsd;
>> -
>> - if (gem_has_blt(fd))
>> - num++;
>> -
>> - if (gem_has_vebox(fd))
>> - num++;
>> -
>> - engines = calloc(num,
>> - sizeof(struct i915_engine_class_instance));
>> - igt_assert(engines);
>> -
>> - engines[i].engine_class = I915_ENGINE_CLASS_RENDER;
>> - engines[i].engine_instance = 0;
>> - i++;
>> -
>> - if (gem_has_blt(fd)) {
>> - engines[i].engine_class = I915_ENGINE_CLASS_COPY;
>> - engines[i].engine_instance = 0;
>> - i++;
>> - }
>> -
>> - if (gem_has_bsd(fd)) {
>> - engines[i].engine_class = I915_ENGINE_CLASS_VIDEO;
>> - engines[i].engine_instance = 0;
>> - i++;
>> - }
>> -
>> - if (gem_has_bsd2(fd)) {
>> - engines[i].engine_class = I915_ENGINE_CLASS_VIDEO;
>> - engines[i].engine_instance = 1;
>> - i++;
>> - }
>> -
>> - if (gem_has_vebox(fd)) {
>> - engines[i].engine_class =
>> - I915_ENGINE_CLASS_VIDEO_ENHANCE;
>> - engines[i].engine_instance = 0;
>> - i++;
>> - }
>> - } else {
>> - struct drm_i915_query_engine_info *engine_info;
>> - struct drm_i915_query_item item = {
>> - .query_id = DRM_I915_QUERY_ENGINE_INFO,
>> - };
>> - const unsigned int sz = 4096;
>> - unsigned int i;
>> -
>> - engine_info = malloc(sz);
>> - igt_assert(engine_info);
>> - memset(engine_info, 0, sz);
>> -
>> - item.data_ptr = to_user_pointer(engine_info);
>> - item.length = sz;
>> -
>> - i915_query_items(fd, &item, 1);
>> - igt_assert(item.length > 0);
>> - igt_assert(item.length <= sz);
>> -
>> - num = engine_info->num_engines;
>> -
>> - engines = calloc(num,
>> - sizeof(struct i915_engine_class_instance));
>> - igt_assert(engines);
>> -
>> - for (i = 0; i < num; i++) {
>> - struct drm_i915_engine_info *engine =
>> - (struct drm_i915_engine_info *)&engine_info->engines[i];
>> -
>> - engines[i] = engine->engine;
>> - }
>> - }
>> -
>> - __engines = engines;
>> - __num_engines = num;
>> + engines = intel_engine_list_of_physical(fd);
>> + igt_assert(engines.nengines);
>> + return &engines;
>> }
>> static unsigned int num_engines_in_class(enum intel_engine_id class)
>> {
>> - unsigned int i, count = 0;
>> + const struct intel_engine_data *engines = query_engines();
>> + unsigned int count = 0;
>> + int i;
>> igt_assert(class == VCS);
>> - query_engines();
>> -
>> - for (i = 0; i < __num_engines; i++) {
>> - if (__engines[i].engine_class == I915_ENGINE_CLASS_VIDEO)
>> + for (i = 0; i < engines->nengines; i++) {
>
> nengines is uint32_t so probably best to keep i unsigned.
>
>> + if (engines->engines[i].class == I915_ENGINE_CLASS_VIDEO)
>> count++;
>> }
>> - igt_assert(count);
>
> Why dropping this?
I messed up, will restore unsigned int and assert in next version.
>
> Regards,
>
> Tvrtko
>
>> return count;
>> }
>> @@ -607,16 +488,15 @@ static void
>> fill_engines_id_class(enum intel_engine_id *list,
>> enum intel_engine_id class)
>> {
>> + const struct intel_engine_data *engines = query_engines();
>> enum intel_engine_id engine = VCS1;
>> unsigned int i, j = 0;
>> igt_assert(class == VCS);
>> igt_assert(num_engines_in_class(VCS) <= 2);
>> - query_engines();
>> -
>> - for (i = 0; i < __num_engines; i++) {
>> - if (__engines[i].engine_class != I915_ENGINE_CLASS_VIDEO)
>> + for (i = 0; i < engines->nengines; i++) {
>> + if (engines->engines[i].class != I915_ENGINE_CLASS_VIDEO)
>> continue;
>> list[j++] = engine++;
>> @@ -626,17 +506,18 @@ fill_engines_id_class(enum intel_engine_id *list,
>> static unsigned int
>> find_physical_instance(enum intel_engine_id class, unsigned int
>> logical)
>> {
>> + const struct intel_engine_data *engines = query_engines();
>> unsigned int i, j = 0;
>> igt_assert(class == VCS);
>> - for (i = 0; i < __num_engines; i++) {
>> - if (__engines[i].engine_class != I915_ENGINE_CLASS_VIDEO)
>> + for (i = 0; i < engines->nengines; i++) {
>> + if (engines->engines[i].class != I915_ENGINE_CLASS_VIDEO)
>> continue;
>> /* Map logical to physical instances. */
>> if (logical == j++)
>> - return __engines[i].engine_instance;
>> + return engines->engines[i].instance;
>> }
>> igt_assert(0);
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