[igt-dev] [i-g-t][PATCH v2 1/1] tests/i915: Add multi-gt support for rc6_idle and rc6_fence tests

[Riana Tauro]

Hi Suja

On 9/1/2023 8:54 AM, Sujaritha Sundaresan wrote:
> Adding multi-gt support for rc6_residency subtests rc6_idle and
> rc6_fence.
> 
> v2: Fix review comments (Riana)
> 
> Signed-off-by: Sujaritha Sundaresan <sujaritha.sundaresan at intel.com>
> ---
>   tests/i915/i915_pm_rc6_residency.c | 32 +++++++++++++++++++-----------
>   1 file changed, 20 insertions(+), 12 deletions(-)
> 
> diff --git a/tests/i915/i915_pm_rc6_residency.c b/tests/i915/i915_pm_rc6_residency.c
> index b266680ac..3c4e1477a 100644
> --- a/tests/i915/i915_pm_rc6_residency.c
> +++ b/tests/i915/i915_pm_rc6_residency.c
> @@ -376,7 +376,7 @@ static void kill_children(int sig)
>   	signal(sig, old);
>   }
>   
> -static void rc6_idle(int i915, uint32_t ctx_id, uint64_t flags)
> +static void rc6_idle(int i915, uint32_t ctx_id, uint64_t flags, unsigned int gt)
>   {
>   	const int64_t duration_ns = SLEEP_DURATION * (int64_t)NSEC_PER_SEC;
>   	const int tolerance = 20; /* Some RC6 is better than none! */
> @@ -397,7 +397,7 @@ static void rc6_idle(int i915, uint32_t ctx_id, uint64_t flags)
>   	struct igt_power gpu;
>   	int fd;
>   
> -	fd = open_pmu(i915, I915_PMU_RC6_RESIDENCY);
> +	fd = open_pmu(i915, __I915_PMU_RC6_RESIDENCY(gt));
>   	igt_drop_caches_set(i915, DROP_IDLE);
>   	igt_require(__pmu_wait_for_rc6(fd));
>   	igt_power_open(i915, &gpu, "gpu");
> @@ -471,12 +471,13 @@ static void rc6_idle(int i915, uint32_t ctx_id, uint64_t flags)
>   	}
>   }
>   
> -static void rc6_fence(int i915, const intel_ctx_t *ctx)
> +static void rc6_fence(int i915, unsigned int gt)
>   {
>   	const int64_t duration_ns = SLEEP_DURATION * (int64_t)NSEC_PER_SEC;
>   	const int tolerance = 20; /* Some RC6 is better than none! */
>   	const unsigned int gen = intel_gen(intel_get_drm_devid(i915));
>   	const struct intel_execution_engine2 *e;
> +	const intel_ctx_t *ctx;
>   	struct power_sample sample[2];
>   	unsigned long slept;
>   	uint64_t rc6, ts[2], ahnd;
> @@ -485,7 +486,7 @@ static void rc6_fence(int i915, const intel_ctx_t *ctx)
>   
>   	igt_require_sw_sync();
>   
> -	fd = open_pmu(i915, I915_PMU_RC6_RESIDENCY);
> +	fd = open_pmu(i915, __I915_PMU_RC6_RESIDENCY(gt));
>   	igt_drop_caches_set(i915, DROP_IDLE);
>   	igt_require(__pmu_wait_for_rc6(fd));
>   	igt_power_open(i915, &gpu, "gpu");
> @@ -509,6 +510,7 @@ static void rc6_fence(int i915, const intel_ctx_t *ctx)
>   	assert_within_epsilon(rc6, ts[1] - ts[0], 5);
>   
>   	/* Submit but delay execution, we should be idle and conserving power */
> +	ctx = intel_ctx_create_for_gt(i915, gt);
>   	ahnd = get_reloc_ahnd(i915, ctx->id);
>   	for_each_ctx_engine(i915, ctx, e) {
>   		igt_spin_t *spin;
> @@ -550,6 +552,7 @@ static void rc6_fence(int i915, const intel_ctx_t *ctx)
>   		gem_quiescent_gpu(i915);
>   	}
>   	put_ahnd(ahnd);
> +	intel_ctx_destroy(i915, ctx);
>   
>   	igt_power_close(&gpu);
>   	close(fd);
> @@ -558,12 +561,12 @@ static void rc6_fence(int i915, const intel_ctx_t *ctx)
>   igt_main
>   {
>   	int i915 = -1;
> +	unsigned int dir, gt;
>   	const intel_ctx_t *ctx;
>   
>   	/* Use drm_open_driver to verify device existence */
>   	igt_fixture {
>   		i915 = drm_open_driver(DRIVER_INTEL);
> -		ctx = intel_ctx_create_all_physical(i915);
>   	}
>   
>   	igt_subtest_with_dynamic("rc6-idle") {
> @@ -572,19 +575,25 @@ igt_main
>   		igt_require_gem(i915);
>   		gem_quiescent_gpu(i915);
>   
> -		for_each_ctx_engine(i915, ctx, e) {
> -			if (e->instance == 0) {
> -				igt_dynamic_f("%s", e->name)
> -					rc6_idle(i915, ctx->id, e->flags);
> +		i915_for_each_gt(i915, dir, gt) {
> +			ctx = intel_ctx_create_for_gt(i915, gt);
> +			for_each_ctx_engine(i915, ctx, e) {
> +				if (e->instance == 0) {
> +					igt_dynamic_f("gt%u-%s", gt, e->name)
> +						rc6_idle(i915, ctx->id, e->flags, gt);
> +				}
> +			intel_ctx_destroy(i915, ctx);
This needs to be moved outside the engine loop.
else the next engine will have the context NULL.

Thanks
Riana
>   			}
>   		}
>   	}
>   
> -	igt_subtest("rc6-fence") {
> +	igt_subtest_with_dynamic("rc6-fence") {
>   		igt_require_gem(i915);
>   		gem_quiescent_gpu(i915);
>   
> -		rc6_fence(i915, ctx);
> +		i915_for_each_gt(i915, dir, gt)
> +			igt_dynamic_f("gt%u", gt)
> +				rc6_fence(i915, gt);
>   	}
>   
>   	igt_subtest_group {
> @@ -626,7 +635,6 @@ igt_main
>   	}
>   
>   	igt_fixture {
> -		intel_ctx_destroy(i915, ctx);
>   		drm_close_driver(i915);
>   	}
>   }