1# SPDX-License-Identifier: GPL-2.0-only 2config DRM_I915_WERROR 3 bool "Force GCC to throw an error instead of a warning when compiling" 4 # As this may inadvertently break the build, only allow the user 5 # to shoot oneself in the foot iff they aim really hard 6 depends on EXPERT 7 # We use the dependency on !COMPILE_TEST to not be enabled in 8 # allmodconfig or allyesconfig configurations 9 depends on !COMPILE_TEST 10 default n 11 help 12 Add -Werror to the build flags for (and only for) i915.ko. 13 Do not enable this unless you are writing code for the i915.ko module. 14 15 Recommended for driver developers only. 16 17 If in doubt, say "N". 18 19config DRM_I915_REPLAY_GPU_HANGS_API 20 bool "Enable GPU hang replay userspace API" 21 depends on DRM_I915 22 depends on EXPERT 23 default n 24 help 25 Choose this option if you want to enable special and unstable 26 userspace API used for replaying GPU hangs on a running system. 27 28 This API is intended to be used by userspace graphics stack developers 29 and provides no stability guarantees. 30 31 The API needs to be activated at boot time using the 32 enable_debug_only_api module parameter. 33 34 If in doubt, say "N". 35 36config DRM_I915_DEBUG 37 bool "Enable additional driver debugging" 38 depends on DRM_I915 39 depends on EXPERT # only for developers 40 depends on !COMPILE_TEST # never built by robots 41 select DEBUG_FS 42 select PREEMPT_COUNT 43 select I2C_CHARDEV 44 select REF_TRACKER 45 select STACKDEPOT 46 select STACKTRACE 47 select DRM_DISPLAY_DP_AUX_CHARDEV 48 select DRM_DISPLAY_DP_TUNNEL_STATE_DEBUG if DRM_I915_DP_TUNNEL 49 select X86_MSR # used by igt/pm_rpm 50 select DRM_VGEM # used by igt/prime_vgem (dmabuf interop checks) 51 select DRM_DEBUG_MM if DRM=y 52 select DRM_EXPORT_FOR_TESTS if m 53 select DRM_DEBUG_SELFTEST 54 select DMABUF_SELFTESTS 55 select SW_SYNC # signaling validation framework (igt/syncobj*) 56 select DRM_I915_WERROR 57 select DRM_I915_DEBUG_GEM 58 select DRM_I915_DEBUG_GEM_ONCE 59 select DRM_I915_DEBUG_MMIO 60 select DRM_I915_DEBUG_RUNTIME_PM 61 select DRM_I915_DEBUG_WAKEREF 62 select DRM_I915_SW_FENCE_DEBUG_OBJECTS 63 select DRM_I915_SELFTEST 64 default n 65 help 66 Choose this option to turn on extra driver debugging that may affect 67 performance but will catch some internal issues. 68 69 Recommended for driver developers only. 70 71 If in doubt, say "N". 72 73config DRM_I915_DEBUG_MMIO 74 bool "Always insert extra checks around mmio access by default" 75 default n 76 help 77 By default, always enables the extra sanity checks (extra register 78 reads) around every mmio (register) access that will slow the system 79 down. This sets the default value of i915.mmio_debug to -1 and can 80 be overridden at module load. 81 82 Recommended for driver developers only. 83 84 If in doubt, say "N". 85 86config DRM_I915_DEBUG_GEM 87 bool "Insert extra checks into the GEM internals" 88 default n 89 depends on DRM_I915_WERROR 90 help 91 Enable extra sanity checks (including BUGs) along the GEM driver 92 paths that may slow the system down and if hit hang the machine. 93 94 Recommended for driver developers only. 95 96 If in doubt, say "N". 97 98config DRM_I915_DEBUG_GEM_ONCE 99 bool "Make a GEM debug failure fatal" 100 default n 101 depends on DRM_I915_DEBUG_GEM 102 help 103 During development, we often only want the very first failure 104 as that would otherwise be lost in the deluge of subsequent 105 failures. However, more casual testers may not want to trigger 106 a hard BUG_ON and hope that the system remains sufficiently usable 107 to capture a bug report in situ. 108 109 Recommended for driver developers only. 110 111 If in doubt, say "N". 112 113config DRM_I915_ERRLOG_GEM 114 bool "Insert extra logging (very verbose) for common GEM errors" 115 default n 116 depends on DRM_I915_DEBUG_GEM 117 help 118 Enable additional logging that may help track down the cause of 119 principally userspace errors. 120 121 Recommended for driver developers only. 122 123 If in doubt, say "N". 124 125config DRM_I915_TRACE_GEM 126 bool "Insert extra ftrace output from the GEM internals" 127 depends on DRM_I915_DEBUG_GEM 128 select TRACING 129 default n 130 help 131 Enable additional and verbose debugging output that will spam 132 ordinary tests, but may be vital for post-mortem debugging when 133 used with /proc/sys/kernel/ftrace_dump_on_oops 134 135 Recommended for driver developers only. 136 137 If in doubt, say "N". 138 139config DRM_I915_TRACE_GTT 140 bool "Insert extra ftrace output from the GTT internals" 141 depends on DRM_I915_DEBUG_GEM 142 select TRACING 143 default n 144 help 145 Enable additional and verbose debugging output that will spam 146 ordinary tests, but may be vital for post-mortem debugging when 147 used with /proc/sys/kernel/ftrace_dump_on_oops 148 149 Recommended for driver developers only. 150 151 If in doubt, say "N". 152 153config DRM_I915_SW_FENCE_DEBUG_OBJECTS 154 bool "Enable additional driver debugging for fence objects" 155 depends on DRM_I915 156 select DEBUG_OBJECTS 157 default n 158 help 159 Choose this option to turn on extra driver debugging that may affect 160 performance but will catch some internal issues. 161 162 Recommended for driver developers only. 163 164 If in doubt, say "N". 165 166config DRM_I915_SW_FENCE_CHECK_DAG 167 bool "Enable additional driver debugging for detecting dependency cycles" 168 depends on DRM_I915 169 default n 170 help 171 Choose this option to turn on extra driver debugging that may affect 172 performance but will catch some internal issues. 173 174 Recommended for driver developers only. 175 176 If in doubt, say "N". 177 178config DRM_I915_DEBUG_GUC 179 bool "Enable additional driver debugging for GuC" 180 depends on DRM_I915 181 select STACKDEPOT 182 default n 183 help 184 Choose this option to turn on extra driver debugging that may affect 185 performance but will help resolve GuC related issues. 186 187 Recommended for driver developers only. 188 189 If in doubt, say "N". 190 191config DRM_I915_SELFTEST 192 bool "Enable selftests upon driver load" 193 depends on DRM_I915 194 default n 195 select DRM_EXPORT_FOR_TESTS if m 196 select FAULT_INJECTION 197 select PRIME_NUMBERS 198 select CRC32 199 help 200 Choose this option to allow the driver to perform selftests upon 201 loading; also requires the i915.selftest=1 module parameter. To 202 exit the module after running the selftests (i.e. to prevent normal 203 module initialisation afterwards) use i915.selftest=-1. 204 205 Recommended for driver developers only. 206 207 If in doubt, say "N". 208 209config DRM_I915_SELFTEST_BROKEN 210 bool "Enable broken and dangerous selftests" 211 depends on DRM_I915_SELFTEST 212 depends on BROKEN 213 default n 214 help 215 This option enables the execution of selftests that are "dangerous" 216 and may trigger unintended HW side-effects as they break strict 217 rules given in the HW specification. For science. 218 219 Recommended for masochistic driver developers only. 220 221 If in doubt, say "N". 222 223config DRM_I915_LOW_LEVEL_TRACEPOINTS 224 bool "Enable low level request tracing events" 225 depends on DRM_I915 226 default n 227 help 228 Choose this option to turn on low level request tracing events. 229 This provides the ability to precisely monitor engine utilisation 230 and also analyze the request dependency resolving timeline. 231 232 Recommended for driver developers only. 233 234 If in doubt, say "N". 235 236config DRM_I915_DEBUG_VBLANK_EVADE 237 bool "Enable extra debug warnings for vblank evasion" 238 depends on DRM_I915 239 default n 240 help 241 Choose this option to turn on extra debug warnings for the 242 vblank evade mechanism. This gives a warning every time the 243 the deadline allotted for the vblank evade critical section 244 is exceeded, even if there isn't an actual risk of missing 245 the vblank. 246 247 Recommended for driver developers only. 248 249 If in doubt, say "N". 250 251config DRM_I915_DEBUG_RUNTIME_PM 252 bool "Enable extra state checking for runtime PM" 253 depends on DRM_I915 254 default n 255 select REF_TRACKER 256 select STACKDEPOT 257 select STACKTRACE 258 help 259 Choose this option to turn on extra state checking for the 260 runtime PM functionality. This may introduce overhead during 261 driver loading, suspend and resume operations. 262 263 Recommended for driver developers only. 264 265 If in doubt, say "N" 266 267config DRM_I915_DEBUG_WAKEREF 268 bool "Enable extra tracking for wakerefs" 269 depends on DRM_I915 270 select REF_TRACKER 271 select STACKDEPOT 272 select STACKTRACE 273 help 274 Choose this option to turn on extra state checking and usage 275 tracking for the wakerefPM functionality. This may introduce 276 overhead during driver runtime. 277 278 If in doubt, say "N" 279