[PATCH i-g-t v9 3/7] lib/intel_multigpu: Introduce library for multi-GPU scenarios

[Zbigniew Kempczyński]

On Thu, Feb 15, 2024 at 05:10:10PM +0100, Kamil Konieczny wrote:
> From: Dominik Karol Piątkowski <dominik.karol.piatkowski at intel.com>
> 
> Implemented gem_require_multigpu in order to replace
> igt_require(gpu_count > 1), as well as printing available
> PCI devices if requirement fails.
> 
> Cc: "Zbigniew Kempczyński" <zbigniew.kempczynski at intel.com>
> Cc: Janusz Krzysztofik <janusz.krzysztofik at linux.intel.com>
> Signed-off-by: "Dominik Karol Piątkowski" <dominik.karol.piatkowski at intel.com>
> [Kamil: fixed whitespace and tabs, moved to lib/intel_multigpu.*]
> Signed-off-by: Kamil Konieczny <kamil.konieczny at linux.intel.com>
> ---
>  lib/intel_multigpu.c | 28 ++++++++++++++++++++++++++++
>  lib/intel_multigpu.h | 11 +++++++++++
>  lib/meson.build      |  1 +
>  3 files changed, 40 insertions(+)
>  create mode 100644 lib/intel_multigpu.c
>  create mode 100644 lib/intel_multigpu.h
> 
> diff --git a/lib/intel_multigpu.c b/lib/intel_multigpu.c
> new file mode 100644
> index 000000000..34c9f936d
> --- /dev/null
> +++ b/lib/intel_multigpu.c
> @@ -0,0 +1,28 @@
> +// SPDX-License-Identifier: MIT
> +/*
> + * Copyright © 2023 Intel Corporation
> + */
> +
> +#include "igt_core.h"
> +#include "igt_device_scan.h"
> +#include "intel_multigpu.h"
> +
> +void gem_require_multigpu(int count)
> +{
> +	struct igt_devices_print_format fmt = {
> +		.type = IGT_PRINT_SIMPLE,
> +		.option = IGT_PRINT_PCI,
> +	};
> +	int devices;
> +
> +	if (igt_device_filter_count() >= count)
> +		return;

If we have 2 filters and count == 2 we return?

--
Zbigniew

> +
> +	igt_info("PCI devices available in the system:\n");
> +
> +	igt_devices_scan(true);
> +	devices = igt_device_filter_pci();
> +	igt_devices_print(&fmt);
> +
> +	igt_skip("Test requires at least %d GPUs, %d available.\n", count, devices);
> +}
> diff --git a/lib/intel_multigpu.h b/lib/intel_multigpu.h
> new file mode 100644
> index 000000000..98dc5a4ce
> --- /dev/null
> +++ b/lib/intel_multigpu.h
> @@ -0,0 +1,11 @@
> +/* SPDX-License-Identifier: MIT */
> +/*
> + * Copyright © 2023 Intel Corporation
> + */
> +
> +#ifndef __INTEL_MULTIGPU_H
> +#define __INTEL_MULTIGPU_H
> +
> +void gem_require_multigpu(int count);
> +
> +#endif /* __INTEL_MULTIGPU_H */
> diff --git a/lib/meson.build b/lib/meson.build
> index 6122861d8..8251695e1 100644
> --- a/lib/meson.build
> +++ b/lib/meson.build
> @@ -65,6 +65,7 @@ lib_sources = [
>  	'intel_device_info.c',
>  	'intel_mmio.c',
>  	'intel_mocs.c',
> +	'intel_multigpu.c',
>  	'intel_pat.c',
>  	'ioctl_wrappers.c',
>  	'media_spin.c',
> -- 
> 2.42.0
>