On Wed, Mar 08, 2017 at 12:44:06PM +0200, Mika Kuoppala wrote:
> Add gem_spin_batch to test that the dummyload infra
> is working properly. Can be also act as tool to force
> a single engine to be busy for controlled period of time.
>
> v2: plenty of igt-fu improvements (Chris)
> v3: nesting batches for more utilization, epsilon fun (Chris)
>
> Cc: Abdiel Janulgue <abdiel.janulgue@xxxxxxxxxxxxxxx>
> Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> Signed-off-by: Mika Kuoppala <mika.kuoppala@xxxxxxxxx>
> ---
> tests/Makefile.sources | 1 +
> tests/gem_spin_batch.c | 85 ++++++++++++++++++++++++++++++++++++++++++++++++++
> 2 files changed, 86 insertions(+)
> create mode 100644 tests/gem_spin_batch.c
>
> diff --git a/tests/Makefile.sources b/tests/Makefile.sources
> index 6e07d93..1763b67 100644
> --- a/tests/Makefile.sources
> +++ b/tests/Makefile.sources
> @@ -214,6 +214,7 @@ TESTS_progs = \
> gem_unfence_active_buffers \
> gem_unref_active_buffers \
> gem_wait \
> + gem_spin_batch \
> gem_workarounds \
> gen3_mixed_blits \
> gen3_render_linear_blits \
> diff --git a/tests/gem_spin_batch.c b/tests/gem_spin_batch.c
> new file mode 100644
> index 0000000..a408fe1
> --- /dev/null
> +++ b/tests/gem_spin_batch.c
> @@ -0,0 +1,85 @@
> +/*
> + * Copyright © 2017 Intel Corporation
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a
> + * copy of this software and associated documentation files (the "Software"),
> + * to deal in the Software without restriction, including without limitation
> + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> + * and/or sell copies of the Software, and to permit persons to whom the
> + * Software is furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice (including the next
> + * paragraph) shall be included in all copies or substantial portions of the
> + * Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
> + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
> + * IN THE SOFTWARE.
> + *
> + */
> +
> +#include "igt.h"
> +
> +#define MAX_ERROR 3 /* % */
> +
> +#define assert_within_epsilon(x, ref, tolerance) \
> + igt_assert_f(100 * x <= (100 + tolerance) * ref && \
> + 100 * x >= (100 - tolerance) * ref, \
> + "'%s' != '%s' (%ld not within %d%% tolerance of %ld)\n", \
> + #x, #ref, (int64_t)x, tolerance, (int64_t)ref)
> +
> +static void basic(int fd, unsigned int engine, unsigned int timeout_sec)
> +{
> + const uint64_t timeout_100ms = 100000000LL;
> + unsigned long loops = 0;
> + igt_spin_t *spin;
> + struct timespec tv = { };
> + uint64_t elapsed;
> +
> + spin = igt_spin_batch_new(fd, engine, 0);
> + while ((elapsed = igt_nsec_elapsed(&tv)) >> 30 < timeout_sec) {
> + igt_spin_t *next = igt_spin_batch_new(fd, engine, 0);
> +
> + igt_spin_batch_set_timeout(spin, timeout_100ms);
> + gem_sync(fd, spin->handle);
> + loops++;
> +
> + igt_spin_batch_free(fd, spin);
> + spin = next;
> + }
> + igt_spin_batch_free(fd, spin);
> +
> + assert_within_epsilon(timeout_100ms * loops, elapsed, MAX_ERROR);
> + igt_assert_eq(intel_detect_and_clear_missed_interrupts(fd), 0);
> +}
> +
> +igt_main
> +{
> + const struct intel_execution_engine *e;
> + int fd = -1;
> +
> + igt_skip_on_simulation();
> +
> + igt_fixture {
> + fd = drm_open_driver(DRIVER_INTEL);
> + igt_require_gem(fd);
> + igt_fork_hang_detector(fd);
intel_detect_and_clear_missed_interrupts(fd);
And I'm done! :)
Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
-Chris
--
Chris Wilson, Intel Open Source Technology Centre
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