| File: | dev/pci/drm/amd/amdgpu/amdgpu_benchmark.c |
| Warning: | line 67, column 2 Value stored to 'throughput' is never read |
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| 1 | /* |
| 2 | * Copyright 2009 Jerome Glisse. |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the "Software"), |
| 6 | * to deal in the Software without restriction, including without limitation |
| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
| 9 | * Software is furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice shall be included in |
| 12 | * all copies or substantial portions of the Software. |
| 13 | * |
| 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 17 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 18 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 20 | * OTHER DEALINGS IN THE SOFTWARE. |
| 21 | * |
| 22 | * Authors: Jerome Glisse |
| 23 | */ |
| 24 | |
| 25 | #include <drm/amdgpu_drm.h> |
| 26 | #include "amdgpu.h" |
| 27 | |
| 28 | #define AMDGPU_BENCHMARK_ITERATIONS1024 1024 |
| 29 | #define AMDGPU_BENCHMARK_COMMON_MODES_N17 17 |
| 30 | |
| 31 | static int amdgpu_benchmark_do_move(struct amdgpu_device *adev, unsigned size, |
| 32 | uint64_t saddr, uint64_t daddr, int n, s64 *time_ms) |
| 33 | { |
| 34 | ktime_t stime, etime; |
| 35 | struct dma_fence *fence; |
| 36 | int i, r; |
| 37 | |
| 38 | stime = ktime_get(); |
| 39 | for (i = 0; i < n; i++) { |
| 40 | struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring; |
| 41 | r = amdgpu_copy_buffer(ring, saddr, daddr, size, NULL((void *)0), &fence, |
| 42 | false0, false0, false0); |
| 43 | if (r) |
| 44 | goto exit_do_move; |
| 45 | r = dma_fence_wait(fence, false0); |
| 46 | dma_fence_put(fence); |
| 47 | if (r) |
| 48 | goto exit_do_move; |
| 49 | } |
| 50 | |
| 51 | exit_do_move: |
| 52 | etime = ktime_get(); |
| 53 | *time_ms = ktime_ms_delta(etime, stime); |
| 54 | |
| 55 | return r; |
| 56 | } |
| 57 | |
| 58 | |
| 59 | static void amdgpu_benchmark_log_results(struct amdgpu_device *adev, |
| 60 | int n, unsigned size, |
| 61 | s64 time_ms, |
| 62 | unsigned sdomain, unsigned ddomain, |
| 63 | char *kind) |
| 64 | { |
| 65 | s64 throughput = (n * (size >> 10)); |
| 66 | |
| 67 | throughput = div64_s64(throughput, time_ms); |
Value stored to 'throughput' is never read | |
| 68 | |
| 69 | dev_info(adev->dev, "amdgpu: %s %u bo moves of %u kB from"do { } while(0) |
| 70 | " %d to %d in %lld ms, throughput: %lld Mb/s or %lld MB/s\n",do { } while(0) |
| 71 | kind, n, size >> 10, sdomain, ddomain, time_ms,do { } while(0) |
| 72 | throughput * 8, throughput)do { } while(0); |
| 73 | } |
| 74 | |
| 75 | static int amdgpu_benchmark_move(struct amdgpu_device *adev, unsigned size, |
| 76 | unsigned sdomain, unsigned ddomain) |
| 77 | { |
| 78 | struct amdgpu_bo *dobj = NULL((void *)0); |
| 79 | struct amdgpu_bo *sobj = NULL((void *)0); |
| 80 | uint64_t saddr, daddr; |
| 81 | s64 time_ms; |
| 82 | int r, n; |
| 83 | |
| 84 | n = AMDGPU_BENCHMARK_ITERATIONS1024; |
| 85 | |
| 86 | r = amdgpu_bo_create_kernel(adev, size, |
| 87 | PAGE_SIZE(1 << 12), sdomain, |
| 88 | &sobj, |
| 89 | &saddr, |
| 90 | NULL((void *)0)); |
| 91 | if (r) |
| 92 | goto out_cleanup; |
| 93 | r = amdgpu_bo_create_kernel(adev, size, |
| 94 | PAGE_SIZE(1 << 12), ddomain, |
| 95 | &dobj, |
| 96 | &daddr, |
| 97 | NULL((void *)0)); |
| 98 | if (r) |
| 99 | goto out_cleanup; |
| 100 | |
| 101 | if (adev->mman.buffer_funcs) { |
| 102 | r = amdgpu_benchmark_do_move(adev, size, saddr, daddr, n, &time_ms); |
| 103 | if (r) |
| 104 | goto out_cleanup; |
| 105 | else |
| 106 | amdgpu_benchmark_log_results(adev, n, size, time_ms, |
| 107 | sdomain, ddomain, "dma"); |
| 108 | } |
| 109 | |
| 110 | out_cleanup: |
| 111 | /* Check error value now. The value can be overwritten when clean up.*/ |
| 112 | if (r < 0) |
| 113 | dev_info(adev->dev, "Error while benchmarking BO move.\n")do { } while(0); |
| 114 | |
| 115 | if (sobj) |
| 116 | amdgpu_bo_free_kernel(&sobj, &saddr, NULL((void *)0)); |
| 117 | if (dobj) |
| 118 | amdgpu_bo_free_kernel(&dobj, &daddr, NULL((void *)0)); |
| 119 | return r; |
| 120 | } |
| 121 | |
| 122 | int amdgpu_benchmark(struct amdgpu_device *adev, int test_number) |
| 123 | { |
| 124 | int i, r; |
| 125 | static const int common_modes[AMDGPU_BENCHMARK_COMMON_MODES_N17] = { |
| 126 | 640 * 480 * 4, |
| 127 | 720 * 480 * 4, |
| 128 | 800 * 600 * 4, |
| 129 | 848 * 480 * 4, |
| 130 | 1024 * 768 * 4, |
| 131 | 1152 * 768 * 4, |
| 132 | 1280 * 720 * 4, |
| 133 | 1280 * 800 * 4, |
| 134 | 1280 * 854 * 4, |
| 135 | 1280 * 960 * 4, |
| 136 | 1280 * 1024 * 4, |
| 137 | 1440 * 900 * 4, |
| 138 | 1400 * 1050 * 4, |
| 139 | 1680 * 1050 * 4, |
| 140 | 1600 * 1200 * 4, |
| 141 | 1920 * 1080 * 4, |
| 142 | 1920 * 1200 * 4 |
| 143 | }; |
| 144 | |
| 145 | mutex_lock(&adev->benchmark_mutex)rw_enter_write(&adev->benchmark_mutex); |
| 146 | switch (test_number) { |
| 147 | case 1: |
| 148 | dev_info(adev->dev,do { } while(0) |
| 149 | "benchmark test: %d (simple test, VRAM to GTT and GTT to VRAM)\n",do { } while(0) |
| 150 | test_number)do { } while(0); |
| 151 | /* simple test, VRAM to GTT and GTT to VRAM */ |
| 152 | r = amdgpu_benchmark_move(adev, 1024*1024, AMDGPU_GEM_DOMAIN_GTT0x2, |
| 153 | AMDGPU_GEM_DOMAIN_VRAM0x4); |
| 154 | if (r) |
| 155 | goto done; |
| 156 | r = amdgpu_benchmark_move(adev, 1024*1024, AMDGPU_GEM_DOMAIN_VRAM0x4, |
| 157 | AMDGPU_GEM_DOMAIN_GTT0x2); |
| 158 | if (r) |
| 159 | goto done; |
| 160 | break; |
| 161 | case 2: |
| 162 | dev_info(adev->dev,do { } while(0) |
| 163 | "benchmark test: %d (simple test, VRAM to VRAM)\n",do { } while(0) |
| 164 | test_number)do { } while(0); |
| 165 | /* simple test, VRAM to VRAM */ |
| 166 | r = amdgpu_benchmark_move(adev, 1024*1024, AMDGPU_GEM_DOMAIN_VRAM0x4, |
| 167 | AMDGPU_GEM_DOMAIN_VRAM0x4); |
| 168 | if (r) |
| 169 | goto done; |
| 170 | break; |
| 171 | case 3: |
| 172 | dev_info(adev->dev,do { } while(0) |
| 173 | "benchmark test: %d (GTT to VRAM, buffer size sweep, powers of 2)\n",do { } while(0) |
| 174 | test_number)do { } while(0); |
| 175 | /* GTT to VRAM, buffer size sweep, powers of 2 */ |
| 176 | for (i = 1; i <= 16384; i <<= 1) { |
| 177 | r = amdgpu_benchmark_move(adev, i * AMDGPU_GPU_PAGE_SIZE4096, |
| 178 | AMDGPU_GEM_DOMAIN_GTT0x2, |
| 179 | AMDGPU_GEM_DOMAIN_VRAM0x4); |
| 180 | if (r) |
| 181 | goto done; |
| 182 | } |
| 183 | break; |
| 184 | case 4: |
| 185 | dev_info(adev->dev,do { } while(0) |
| 186 | "benchmark test: %d (VRAM to GTT, buffer size sweep, powers of 2)\n",do { } while(0) |
| 187 | test_number)do { } while(0); |
| 188 | /* VRAM to GTT, buffer size sweep, powers of 2 */ |
| 189 | for (i = 1; i <= 16384; i <<= 1) { |
| 190 | r = amdgpu_benchmark_move(adev, i * AMDGPU_GPU_PAGE_SIZE4096, |
| 191 | AMDGPU_GEM_DOMAIN_VRAM0x4, |
| 192 | AMDGPU_GEM_DOMAIN_GTT0x2); |
| 193 | if (r) |
| 194 | goto done; |
| 195 | } |
| 196 | break; |
| 197 | case 5: |
| 198 | dev_info(adev->dev,do { } while(0) |
| 199 | "benchmark test: %d (VRAM to VRAM, buffer size sweep, powers of 2)\n",do { } while(0) |
| 200 | test_number)do { } while(0); |
| 201 | /* VRAM to VRAM, buffer size sweep, powers of 2 */ |
| 202 | for (i = 1; i <= 16384; i <<= 1) { |
| 203 | r = amdgpu_benchmark_move(adev, i * AMDGPU_GPU_PAGE_SIZE4096, |
| 204 | AMDGPU_GEM_DOMAIN_VRAM0x4, |
| 205 | AMDGPU_GEM_DOMAIN_VRAM0x4); |
| 206 | if (r) |
| 207 | goto done; |
| 208 | } |
| 209 | break; |
| 210 | case 6: |
| 211 | dev_info(adev->dev,do { } while(0) |
| 212 | "benchmark test: %d (GTT to VRAM, buffer size sweep, common modes)\n",do { } while(0) |
| 213 | test_number)do { } while(0); |
| 214 | /* GTT to VRAM, buffer size sweep, common modes */ |
| 215 | for (i = 0; i < AMDGPU_BENCHMARK_COMMON_MODES_N17; i++) { |
| 216 | r = amdgpu_benchmark_move(adev, common_modes[i], |
| 217 | AMDGPU_GEM_DOMAIN_GTT0x2, |
| 218 | AMDGPU_GEM_DOMAIN_VRAM0x4); |
| 219 | if (r) |
| 220 | goto done; |
| 221 | } |
| 222 | break; |
| 223 | case 7: |
| 224 | dev_info(adev->dev,do { } while(0) |
| 225 | "benchmark test: %d (VRAM to GTT, buffer size sweep, common modes)\n",do { } while(0) |
| 226 | test_number)do { } while(0); |
| 227 | /* VRAM to GTT, buffer size sweep, common modes */ |
| 228 | for (i = 0; i < AMDGPU_BENCHMARK_COMMON_MODES_N17; i++) { |
| 229 | r = amdgpu_benchmark_move(adev, common_modes[i], |
| 230 | AMDGPU_GEM_DOMAIN_VRAM0x4, |
| 231 | AMDGPU_GEM_DOMAIN_GTT0x2); |
| 232 | if (r) |
| 233 | goto done; |
| 234 | } |
| 235 | break; |
| 236 | case 8: |
| 237 | dev_info(adev->dev,do { } while(0) |
| 238 | "benchmark test: %d (VRAM to VRAM, buffer size sweep, common modes)\n",do { } while(0) |
| 239 | test_number)do { } while(0); |
| 240 | /* VRAM to VRAM, buffer size sweep, common modes */ |
| 241 | for (i = 0; i < AMDGPU_BENCHMARK_COMMON_MODES_N17; i++) { |
| 242 | r = amdgpu_benchmark_move(adev, common_modes[i], |
| 243 | AMDGPU_GEM_DOMAIN_VRAM0x4, |
| 244 | AMDGPU_GEM_DOMAIN_VRAM0x4); |
| 245 | if (r) |
| 246 | goto done; |
| 247 | } |
| 248 | break; |
| 249 | |
| 250 | default: |
| 251 | dev_info(adev->dev, "Unknown benchmark %d\n", test_number)do { } while(0); |
| 252 | r = -EINVAL22; |
| 253 | break; |
| 254 | } |
| 255 | |
| 256 | done: |
| 257 | mutex_unlock(&adev->benchmark_mutex)rw_exit_write(&adev->benchmark_mutex); |
| 258 | |
| 259 | return r; |
| 260 | } |