From 745b3ef2ac4d7afa99202e6afc441e3f0b97f5b4 Mon Sep 17 00:00:00 2001 From: Joshua Bakita Date: Mon, 30 May 2022 12:20:48 -0400 Subject: gpu-paging: Support asynchronous paging - Fully enables *_ASYNC API - Allows page mapping to be overlapped with I/O, resulting in an 11% speedup to synchronous reads Benchmarks, 1,000 iters, before: gpu_paging_speed, write: 185.5ms +/- 3.58 gpu_paging_speed, read: 180.5ms +/- 1.42 gpu_paging_overhead_speed, write start: 183.3ms +/- 3.89 gpu_paging_overhead_speed, write finish: 3.4ms +/- 2.61 gpu_paging_overhead_speed, read start: 181.6ms +/- 3.34 gpu_paging_overhead_speed, read finish: 41.1ms +/- 2.69 Benchmarks, 1,000 iters, after: gpu_paging_speed, write: 185.8ms +/- 3.70 gpu_paging_speed, read: 161.3ms +/- 0.97 gpu_paging_overhead_speed, write start: 38.9ms +/- 5.47 gpu_paging_overhead_speed, write finish: 3.1ms +/- 2.42 gpu_paging_overhead_speed, read start: 79.4 +/- 6.42 gpu_paging_overhead_speed, read finish: 44.3 +/- 1.53 --- drivers/gpu/nvgpu/include/nvgpu/linux/vm.h | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/gpu/nvgpu/include') diff --git a/drivers/gpu/nvgpu/include/nvgpu/linux/vm.h b/drivers/gpu/nvgpu/include/nvgpu/linux/vm.h index b86a428a..85abce6f 100644 --- a/drivers/gpu/nvgpu/include/nvgpu/linux/vm.h +++ b/drivers/gpu/nvgpu/include/nvgpu/linux/vm.h @@ -51,6 +51,7 @@ struct nvgpu_mapped_buf_priv { struct sg_table *sgt; // For fast reverse lookup (FD -> mapped_buf) struct list_head nvmap_priv_entry; + struct completion swap_io_done; }; /* NVGPU_AS_MAP_BUFFER_FLAGS_DIRECT_KIND_CTRL must be set */ -- cgit v1.2.2