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| author | Takashi Iwai <tiwai@suse.de> | 2022-04-19 17:26:01 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2022-04-19 17:26:01 +0200 |
| commit | 0aea30a07ec6b50de0fc5f5b2ec34a68ead86b61 (patch) | |
| tree | ee7d7d116570f39e47399c8f691a5a7565077eeb /include/linux/map_benchmark.h | |
| parent | 4ddef9c4d70aae0c9029bdec7c3f7f1c1c51ff8c (diff) | |
| parent | 5b933c7262c5b0ea11ea3c3b3ea81add04895954 (diff) | |
| download | lwn-0aea30a07ec6b50de0fc5f5b2ec34a68ead86b61.tar.gz lwn-0aea30a07ec6b50de0fc5f5b2ec34a68ead86b61.zip | |
Merge tag 'asoc-fix-v5.18-rc3' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v5.18
A collection of fixes that came in since the merge window, plus one new
device ID for an x86 laptop. Nothing that really stands out with
particularly big impact outside of the affected device.
Diffstat (limited to 'include/linux/map_benchmark.h')
| -rw-r--r-- | include/linux/map_benchmark.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/include/linux/map_benchmark.h b/include/linux/map_benchmark.h new file mode 100644 index 000000000000..62674c83bde4 --- /dev/null +++ b/include/linux/map_benchmark.h @@ -0,0 +1,31 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2022 HiSilicon Limited. + */ + +#ifndef _KERNEL_DMA_BENCHMARK_H +#define _KERNEL_DMA_BENCHMARK_H + +#define DMA_MAP_BENCHMARK _IOWR('d', 1, struct map_benchmark) +#define DMA_MAP_MAX_THREADS 1024 +#define DMA_MAP_MAX_SECONDS 300 +#define DMA_MAP_MAX_TRANS_DELAY (10 * NSEC_PER_MSEC) + +#define DMA_MAP_BIDIRECTIONAL 0 +#define DMA_MAP_TO_DEVICE 1 +#define DMA_MAP_FROM_DEVICE 2 + +struct map_benchmark { + __u64 avg_map_100ns; /* average map latency in 100ns */ + __u64 map_stddev; /* standard deviation of map latency */ + __u64 avg_unmap_100ns; /* as above */ + __u64 unmap_stddev; + __u32 threads; /* how many threads will do map/unmap in parallel */ + __u32 seconds; /* how long the test will last */ + __s32 node; /* which numa node this benchmark will run on */ + __u32 dma_bits; /* DMA addressing capability */ + __u32 dma_dir; /* DMA data direction */ + __u32 dma_trans_ns; /* time for DMA transmission in ns */ + __u32 granule; /* how many PAGE_SIZE will do map/unmap once a time */ +}; +#endif /* _KERNEL_DMA_BENCHMARK_H */ |
