[Mesa-dev] [PATCH 3/3] radv: Incorporate GPU family into cache UUID.

[Mike Lothian]

Would it be possible to have a cache for each family? I imagine this might
cause issues when someone has multiple cards in their system

On Tue, 22 Nov 2016 at 01:20 Bas Nieuwenhuizen <bas at basnieuwenhuizen.nl>
wrote:

> Invalidates the cache when someone switches cards.
>
> Signed-off-by: Bas Nieuwenhuizen <basni at google.com>
> ---
>  src/amd/vulkan/radv_device.c | 8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)
>
> diff --git a/src/amd/vulkan/radv_device.c b/src/amd/vulkan/radv_device.c
> index 04c0bdc..8595973 100644
> --- a/src/amd/vulkan/radv_device.c
> +++ b/src/amd/vulkan/radv_device.c
> @@ -61,9 +61,10 @@ radv_get_function_timestamp(void *ptr, uint32_t*
> timestamp)
>  }
>
>  static int
> -radv_device_get_cache_uuid(void *uuid)
> +radv_device_get_cache_uuid(enum radeon_family family, void *uuid)
>  {
>         uint32_t mesa_timestamp, llvm_timestamp;
> +       uint16_t f = family;
>         memset(uuid, 0, VK_UUID_SIZE);
>         if (radv_get_function_timestamp(radv_device_get_cache_uuid,
> &mesa_timestamp) ||
>             radv_get_function_timestamp(LLVMInitializeAMDGPUTargetInfo,
> &llvm_timestamp))
> @@ -71,7 +72,8 @@ radv_device_get_cache_uuid(void *uuid)
>
>         memcpy(uuid, &mesa_timestamp, 4);
>         memcpy((char*)uuid + 4, &llvm_timestamp, 4);
> -       snprintf((char*)uuid + 8, VK_UUID_SIZE - 8, "radv");
> +       memcpy((char*)uuid + 8, &f, 2);
> +       snprintf((char*)uuid + 10, VK_UUID_SIZE - 10, "radv");
>         return 0;
>  }
>
> @@ -120,7 +122,7 @@ radv_physical_device_init(struct radv_physical_device
> *device,
>                 goto fail;
>         }
>
> -       if (radv_device_get_cache_uuid(device->uuid)) {
> +       if (radv_device_get_cache_uuid(device->rad_info.family,
> device->uuid)) {
>                 radv_finish_wsi(device);
>                 device->ws->destroy(device->ws);
>                 goto fail;
> --
> 2.10.2
>
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