Hi Vinay, Thank you for the patch! Yet something to improve: [auto build test ERROR on drm-tip/drm-tip] [cannot apply to drm-intel/for-linux-next drm-exynos/exynos-drm-next tegra-drm/drm/tegra/for-next drm/drm-next v5.14-rc3 next-20210729] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Vinay-Belgaumkar/drm-i915-guc-slpc-Enable-GuC-based-power-management-features/20210729-051427 base: git://anongit.freedesktop.org/drm/drm-tip drm-tip config: i386-randconfig-c001-20210728 (attached as .config) compiler: gcc-10 (Ubuntu 10.3.0-1ubuntu1~20.04) 10.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/4567ad693d6988c728447d59050390e308ce6fb0 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Vinay-Belgaumkar/drm-i915-guc-slpc-Enable-GuC-based-power-management-features/20210729-051427 git checkout 4567ad693d6988c728447d59050390e308ce6fb0 # save the attached .config to linux build tree make W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): In file included from drivers/gpu/drm/i915/gt/intel_rps.c:2333: >> drivers/gpu/drm/i915/gt/selftest_slpc.c:37:5: error: no previous prototype for 'live_slpc_clamp_min' [-Werror=missing-prototypes] 37 | int live_slpc_clamp_min(void *arg) | ^~~~~~~~~~~~~~~~~~~ >> drivers/gpu/drm/i915/gt/selftest_slpc.c:164:5: error: no previous prototype for 'live_slpc_clamp_max' [-Werror=missing-prototypes] 164 | int live_slpc_clamp_max(void *arg) | ^~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors vim +/live_slpc_clamp_min +37 drivers/gpu/drm/i915/gt/selftest_slpc.c 36 > 37 int live_slpc_clamp_min(void *arg) 38 { 39 struct drm_i915_private *i915 = arg; 40 struct intel_gt *gt = &i915->gt; 41 struct intel_guc_slpc *slpc = >->uc.guc.slpc; 42 struct intel_rps *rps = >->rps; 43 struct intel_engine_cs *engine; 44 enum intel_engine_id id; 45 struct igt_spinner spin; 46 u32 slpc_min_freq, slpc_max_freq; 47 int err = 0; 48 49 if (!intel_uc_uses_guc_slpc(>->uc)) 50 return 0; 51 52 if (igt_spinner_init(&spin, gt)) 53 return -ENOMEM; 54 55 if (intel_guc_slpc_get_max_freq(slpc, &slpc_max_freq)) { 56 pr_err("Could not get SLPC max freq\n"); 57 return -EIO; 58 } 59 60 if (intel_guc_slpc_get_min_freq(slpc, &slpc_min_freq)) { 61 pr_err("Could not get SLPC min freq\n"); 62 return -EIO; 63 } 64 65 if (slpc_min_freq == slpc_max_freq) { 66 pr_err("Min/Max are fused to the same value\n"); 67 return -EINVAL; 68 } 69 70 intel_gt_pm_wait_for_idle(gt); 71 intel_gt_pm_get(gt); 72 for_each_engine(engine, gt, id) { 73 struct i915_request *rq; 74 u32 step, min_freq, req_freq; 75 u32 act_freq, max_act_freq; 76 77 if (!intel_engine_can_store_dword(engine)) 78 continue; 79 80 /* Go from min to max in 5 steps */ 81 step = (slpc_max_freq - slpc_min_freq) / NUM_STEPS; 82 max_act_freq = slpc_min_freq; 83 for (min_freq = slpc_min_freq; min_freq < slpc_max_freq; 84 min_freq += step) { 85 err = slpc_set_min_freq(slpc, min_freq); 86 if (err) 87 break; 88 89 st_engine_heartbeat_disable(engine); 90 91 rq = igt_spinner_create_request(&spin, 92 engine->kernel_context, 93 MI_NOOP); 94 if (IS_ERR(rq)) { 95 err = PTR_ERR(rq); 96 st_engine_heartbeat_enable(engine); 97 break; 98 } 99 100 i915_request_add(rq); 101 102 if (!igt_wait_for_spinner(&spin, rq)) { 103 pr_err("%s: Spinner did not start\n", 104 engine->name); 105 igt_spinner_end(&spin); 106 st_engine_heartbeat_enable(engine); 107 intel_gt_set_wedged(engine->gt); 108 err = -EIO; 109 break; 110 } 111 112 /* Wait for GuC to detect business and raise 113 * requested frequency if necessary. 114 */ 115 delay_for_h2g(); 116 117 req_freq = intel_rps_read_punit_req_frequency(rps); 118 119 /* GuC requests freq in multiples of 50/3 MHz */ 120 if (req_freq < (min_freq - 50/3)) { 121 pr_err("SWReq is %d, should be at least %d\n", req_freq, 122 min_freq - 50/3); 123 igt_spinner_end(&spin); 124 st_engine_heartbeat_enable(engine); 125 err = -EINVAL; 126 break; 127 } 128 129 act_freq = intel_rps_read_actual_frequency(rps); 130 if (act_freq > max_act_freq) 131 max_act_freq = act_freq; 132 133 igt_spinner_end(&spin); 134 st_engine_heartbeat_enable(engine); 135 } 136 137 pr_info("Max actual frequency for %s was %d\n", 138 engine->name, max_act_freq); 139 140 /* Actual frequency should rise above min */ 141 if (max_act_freq == slpc_min_freq) { 142 pr_err("Actual freq did not rise above min\n"); 143 err = -EINVAL; 144 } 145 146 if (err) 147 break; 148 } 149 150 /* Restore min/max frequencies */ 151 slpc_set_max_freq(slpc, slpc_max_freq); 152 slpc_set_min_freq(slpc, slpc_min_freq); 153 154 if (igt_flush_test(gt->i915)) 155 err = -EIO; 156 157 intel_gt_pm_put(gt); 158 igt_spinner_fini(&spin); 159 intel_gt_pm_wait_for_idle(gt); 160 161 return err; 162 } 163 > 164 int live_slpc_clamp_max(void *arg) 165 { 166 struct drm_i915_private *i915 = arg; 167 struct intel_gt *gt = &i915->gt; 168 struct intel_guc_slpc *slpc; 169 struct intel_rps *rps; 170 struct intel_engine_cs *engine; 171 enum intel_engine_id id; 172 struct igt_spinner spin; 173 int err = 0; 174 u32 slpc_min_freq, slpc_max_freq; 175 176 slpc = >->uc.guc.slpc; 177 rps = >->rps; 178 179 if (!intel_uc_uses_guc_slpc(>->uc)) 180 return 0; 181 182 if (igt_spinner_init(&spin, gt)) 183 return -ENOMEM; 184 185 if (intel_guc_slpc_get_max_freq(slpc, &slpc_max_freq)) { 186 pr_err("Could not get SLPC max freq\n"); 187 return -EIO; 188 } 189 190 if (intel_guc_slpc_get_min_freq(slpc, &slpc_min_freq)) { 191 pr_err("Could not get SLPC min freq\n"); 192 return -EIO; 193 } 194 195 if (slpc_min_freq == slpc_max_freq) { 196 pr_err("Min/Max are fused to the same value\n"); 197 return -EINVAL; 198 } 199 200 intel_gt_pm_wait_for_idle(gt); 201 intel_gt_pm_get(gt); 202 for_each_engine(engine, gt, id) { 203 struct i915_request *rq; 204 u32 max_freq, req_freq; 205 u32 act_freq, max_act_freq; 206 u32 step; 207 208 if (!intel_engine_can_store_dword(engine)) 209 continue; 210 211 /* Go from max to min in 5 steps */ 212 step = (slpc_max_freq - slpc_min_freq) / NUM_STEPS; 213 max_act_freq = slpc_min_freq; 214 for (max_freq = slpc_max_freq; max_freq > slpc_min_freq; 215 max_freq -= step) { 216 err = slpc_set_max_freq(slpc, max_freq); 217 if (err) 218 break; 219 220 st_engine_heartbeat_disable(engine); 221 222 rq = igt_spinner_create_request(&spin, 223 engine->kernel_context, 224 MI_NOOP); 225 if (IS_ERR(rq)) { 226 st_engine_heartbeat_enable(engine); 227 err = PTR_ERR(rq); 228 break; 229 } 230 231 i915_request_add(rq); 232 233 if (!igt_wait_for_spinner(&spin, rq)) { 234 pr_err("%s: SLPC spinner did not start\n", 235 engine->name); 236 igt_spinner_end(&spin); 237 st_engine_heartbeat_enable(engine); 238 intel_gt_set_wedged(engine->gt); 239 err = -EIO; 240 break; 241 } 242 243 delay_for_h2g(); 244 245 /* Verify that SWREQ indeed was set to specific value */ 246 req_freq = intel_rps_read_punit_req_frequency(rps); 247 248 /* GuC requests freq in multiples of 50/3 MHz */ 249 if (req_freq > (max_freq + 50/3)) { 250 pr_err("SWReq is %d, should be at most %d\n", req_freq, 251 max_freq + 50/3); 252 igt_spinner_end(&spin); 253 st_engine_heartbeat_enable(engine); 254 err = -EINVAL; 255 break; 256 } 257 258 act_freq = intel_rps_read_actual_frequency(rps); 259 if (act_freq > max_act_freq) 260 max_act_freq = act_freq; 261 262 st_engine_heartbeat_enable(engine); 263 igt_spinner_end(&spin); 264 265 if (err) 266 break; 267 } 268 269 pr_info("Max actual frequency for %s was %d\n", 270 engine->name, max_act_freq); 271 272 /* Actual frequency should rise above min */ 273 if (max_act_freq == slpc_min_freq) { 274 pr_err("Actual freq did not rise above min\n"); 275 err = -EINVAL; 276 } 277 278 if (igt_flush_test(gt->i915)) { 279 err = -EIO; 280 break; 281 } 282 283 if (err) 284 break; 285 } 286 287 /* Restore min/max freq */ 288 slpc_set_max_freq(slpc, slpc_max_freq); 289 slpc_set_min_freq(slpc, slpc_min_freq); 290 291 intel_gt_pm_put(gt); 292 igt_spinner_fini(&spin); 293 intel_gt_pm_wait_for_idle(gt); 294 295 return err; 296 } 297 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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