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Message-ID: <20250506030100.394376-1-xiaqinxin@huawei.com>
Date: Tue, 6 May 2025 11:00:56 +0800
From: Qinxin Xia <xiaqinxin@...wei.com>
To: <baohua@...nel.org>, <xiaqinxin@...wei.com>
CC: <yangyicong@...wei.com>, <hch@....de>, <iommu@...ts.linux.dev>,
<jonathan.cameron@...wei.com>, <prime.zeng@...wei.com>,
<fanghao11@...wei.com>, <linux-kernel@...r.kernel.org>, <linuxarm@...wei.com>
Subject: [PATCH v2 0/4] dma mapping benchmark: add support for dma_map_sg
Modify the framework to adapt to more map modes, add benchmark
support for dma_map_sg, and add support sg map mode in ioctl.
The result:
[root@...alhost]# ./dma_map_benchmark -m 1 -g 8 -t 8 -s 30 -d 2
dma mapping mode: DMA_MAP_SG_MODE
dma mapping benchmark: threads:8 seconds:30 node:-1 dir:FROM_DEVICE granule/sg_nents: 8
average map latency(us):1.4 standard deviation:0.3
average unmap latency(us):1.3 standard deviation:0.3
[root@...alhost]# ./dma_map_benchmark -m 0 -g 8 -t 8 -s 30 -d 2
dma mapping mode: DMA_MAP_SINGLE_MODE
dma mapping benchmark: threads:8 seconds:30 node:-1 dir:FROM_DEVICE granule/sg_nents: 8
average map latency(us):1.0 standard deviation:0.3
average unmap latency(us):1.3 standard deviation:0.5
---
Changes since V1:
- Address the comments from Masami, added some comments and changed the unmap type to void.
- Link: https://lore.kernel.org/lkml/20250212022718.1995504-1-xiaqinxin@huawei.com/
Qinxin Xia (4):
dma-mapping: benchmark: Add padding to ensure uABI remained consistent
dma mapping benchmark: modify the framework to adapt to more map modes
dma-mapping: benchmark: add support for dma_map_sg
dma mapping benchmark:add support for dma_map_sg
include/linux/map_benchmark.h | 46 +++-
kernel/dma/map_benchmark.c | 222 ++++++++++++++++--
.../testing/selftests/dma/dma_map_benchmark.c | 16 +-
3 files changed, 249 insertions(+), 35 deletions(-)
--
2.33.0
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