Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> writes:
> In all likelihood the runtime is consumed by the thread setup, but just
> in case it is dominated by the execbuf, make sure that is bounded.
>
> Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> ---
> tests/i915/gem_exec_parallel.c | 28 ++++++++++++++++------------
> 1 file changed, 16 insertions(+), 12 deletions(-)
>
> diff --git a/tests/i915/gem_exec_parallel.c b/tests/i915/gem_exec_parallel.c
> index 0d4d6c628..586f85080 100644
> --- a/tests/i915/gem_exec_parallel.c
> +++ b/tests/i915/gem_exec_parallel.c
> @@ -42,22 +42,26 @@
>
> #define VERIFY 0
>
> +static inline uint32_t hash32(uint32_t val)
> +{
> +#define GOLDEN_RATIO_32 0x61C88647
> + return val * GOLDEN_RATIO_32;
> +}
> +
> static void check_bo(int fd, uint32_t handle, int pass)
> {
> - uint32_t *map;
> - int i;
> + uint32_t x = hash32(handle * pass) % 1024;
>
> igt_debug("Verifying result (pass=%d, handle=%d)\n", pass, handle);
> - map = gem_mmap__cpu(fd, handle, 0, 4096, PROT_READ);
> - gem_set_domain(fd, handle, I915_GEM_DOMAIN_CPU, 0);
> - for (i = 0; i < 1024; i++)
> - igt_assert_eq(map[i], i);
> - munmap(map, 4096);
> + gem_read(fd, handle, x * sizeof(x), &x, sizeof(x));
> + igt_assert_eq_u32(x, x);
This caught my eye.
-Mika
> }
>
> #define CONTEXTS 0x1
> #define FDS 0x2
>
> +#define NUMOBJ 16
> +
> struct thread {
> pthread_t thread;
> pthread_mutex_t *mutex;
> @@ -132,8 +136,8 @@ static void *thread(void *data)
> execbuf.rsvd1 = gem_context_clone_with_engines(fd, 0);
> }
>
> - for (i = 0; i < 16; i++) {
> - obj[0].handle = t->scratch[i];
> + igt_until_timeout(1) {
> + obj[0].handle = t->scratch[i++ % NUMOBJ];
> if (t->flags & FDS)
> obj[0].handle = gem_open(fd, obj[0].handle);
>
> @@ -160,7 +164,7 @@ static void all(int fd, struct intel_execution_engine2 *engine, unsigned flags)
> struct thread *threads;
> unsigned engines[16];
> unsigned nengine;
> - uint32_t scratch[16], handle[16];
> + uint32_t scratch[NUMOBJ], handle[NUMOBJ];
> int go;
> int i;
>
> @@ -185,7 +189,7 @@ static void all(int fd, struct intel_execution_engine2 *engine, unsigned flags)
> }
> igt_require(nengine);
>
> - for (i = 0; i < 16; i++) {
> + for (i = 0; i < NUMOBJ; i++) {
> scratch[i] = handle[i] = gem_create(fd, 4096);
> if (flags & FDS)
> scratch[i] = gem_flink(fd, handle[i]);
> @@ -221,7 +225,7 @@ static void all(int fd, struct intel_execution_engine2 *engine, unsigned flags)
> for (i = 0; i < 1024; i++)
> pthread_join(threads[i].thread, NULL);
>
> - for (i = 0; i < 16; i++) {
> + for (i = 0; i < NUMOBJ; i++) {
> check_bo(fd, handle[i], i);
> gem_close(fd, handle[i]);
> }
> --
> 2.25.1
>
> _______________________________________________
> igt-dev mailing list
> igt-dev@xxxxxxxxxxxxxxxxxxxxx
> https://lists.freedesktop.org/mailman/listinfo/igt-dev
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